Xray GTX8 User manual

2
BEFORE YOU START
The GTX8 is a high-competition, high-quality, 1/10-scale nitro car intended for persons aged 16 years and older
with previous experience building and operating RC model racing cars. This is not a toy; it is a precision racing
model. This model racing car is not intended for use by beginners, inexperienced customers, or by children
without direct supervision of a responsible, knowledgeable adult. If you do not fulfill these requirements, please
return the kit in unused and unassembled form back to the shop where you have purchased it.
Before building and operating your GTX8, YOU MUST read through all of the operating instructions and
instruction manual and fully understand them to get the maximum enjoyment and prevent unnecessary
damage.
Read carefully and fully understand the instructions before beginning assembly.
Make sure you review this entire manual, the included set-up book, and examine all details carefully. If for some
reason you decide the GTX8 is not what you wanted or expected, do not continue any further. Your hobby dealer
cannot accept your GTX8 kit for return or exchange after it has been partially or fully assembled.
Contents of the box may differ from pictures. In line with our policy of continuous product development, the exact
specifications of the kit may vary without prior notice.
SAFETY PRECAUTIONS
WARNING: This product contains a chemical known to the state of California to cause cancer and birth
defects or other reproductive harm.
CAUTION: CANCER HAZARD
Wash thoroughly after using. DO NOT use product while eating, drinking or using tobacco products. May
cause chronic effects to gastrointestinal tract, CNS, kidneys, and blood. MAY CAUSE BIRTH DEFECTS.
When building, using and/or operating this model always wear protective glasses and gloves.
Take appropriate safety precautions prior to operating this model. You are responsible for this model‘s
assembly and safe operation! Please read the instruction manual before building and operating this model
and follow all safety precautions. Always keep the instruction manual at hand for quick reference, even after
completing the assembly. Use only genuine and original authentic XRAY parts for maximum performance.
Using any third party parts on this model will void guaranty immediately.
Improper operation may cause personal and/or property damage. XRAY and its distributors have no
control over damage resulting from shipping, improper construction, or improper usage. XRAY assumes and
accepts no responsibility for personal and/or property damages resulting from the use of improper building
materials, equipment and operations. By purchasing any item produced by XRAY, the buyer expressly
warrants that he/she is in compliance with all applicable federal, state and local laws and regulation
regarding the purchase, ownership and use of the item. The buyer expressly agrees to indemnify and hold
harmless XRAY for all claims resulting directly or indirectly from the purchase, ownership or use of the
product. By the act of assembling or operating this product, the user accepts all resulting liability. If the buyer
is not prepared to accept this liability, then he/she should return this kit in new, unassembled, and unused
condition to the place of purchase.
• Keep the wheels of the model off the ground when checking the operation of the radio equipment.
• Disconnect the battery pack before storing your model.
• When learning to operate your model, go to an area that has no obstacles that can damage your model
if your model suffers a collision.
• Remove any sand, mud, dirt, grass or water before putting your model away.
• If the model behaves strangely, immediately stop the model, check and clear the problem.
• To prevent any serious personal injury and/or damage to property, be responsible when operating all
remote controlled models.
• The model car is not intended for use on public places and roads or areas where its operation can conflict with
or disrupt pedestrian or vehicular traffic.
• Because the model car is controlled by radio, it is subject to radio interference from many sources that
are beyond your control. Since radio interference can cause momentary loss of control, always allow a
safety margin in all directions around the model in order to prevent collisions.
• Do not use your model:
- Near real cars, animals, or people that are unaware that an RC car is being driven.
- In places where children and people gather
- In residential districts and parks
- In limited indoor spaces
- In wet conditions
- In the street
- In areas where loud noises can disturb others, such as hospitals and residential areas.
- At night or anytime your line of sight to the model may be obstructed or impaired in any way.
To prevent any serious personal injury and/or damage to property, please be responsible when operating
all remote controlled models.
IMPORTANT NOTES – GENERAL
• This product is not suitable for children under 16 years of age without the direct supervision of a
responsible and knowledgeable adult.
• Carefully read all manufacturers warnings and cautions for any parts used in the construction and use
of your model.
• Assemble this kit only in places away from the reach of very small children.
• First-time builders and users should seek advice from people who have building experience in order to
assemble the model correctly and to allow the model to reach its performance potential.
• Exercise care when using tools and sharp instruments.
• Take care when building, as some parts may have sharp edges.
• Keep small parts out of reach of small children. Children must not be allowed to put any parts in their
mouth, or pull vinyl bag over their head.
• Read and follow instructions supplied with paints and/or cement, if used (not included in kit).
• Immediately after using your model, do NOT touch equipment on the model such as the motor and
speed controller, because they generate high temperatures. You may seriously burn yourself seriously
touching them.
• Follow the operating instructions for the radio equipment at all times.
• Do not put fingers or any objects inside rotating and moving parts, as this may cause damage or seri-
ous injury as your finger, hair, clothes, etc. may get caught.
• Be sure that your operating frequency is clear before turning on or running your model, and never
share the same frequency with somebody else at the same time. Ensure that others are aware of the
operating frequency you are using and when you are using it.
• Use a transmitter designed for ground use with RC cars. Make sure that no one else is using the same
frequency as yours in your operating area. Using the same frequency at the same time, whether it is
driving, flying or sailing, can cause loss of control of the RC model, resulting in a serious accident.
• Always turn on your transmitter before you turn on the receiver in the car. Always turn off the receiver
before turning your transmitter off.
FAILURE TO FOLLOW THESE INSTRUCTIONS WILL BE CONSIDERED AS ABUSE AND/OR NEGLECT.
CUSTOMER SUPPORT XRAY Europe
K Výstavisku 6992
91101 Trenčín
Slovakia, EUROPE
Phone: [phone]
Fax: [phone]
Email: [e-mail]
We have made every effort to make these instructions as easy to understand as possible. However, if you have
any difficulties, problems, or questions, please do not hesitate to contact the XRAY support team at info@
teamxray.com. Also, please visit our Web site at www.teamxray.com to find the latest updates, set-up informa-
tion, option parts, and many other goodies. We pride ourselves on taking excellent care of our customers.
You can join thousands of XRAY fans and enthusiasts in our online community at: www.teamxray.com
XRAY USA
RC America, 2030 Century Center Blvd #15 Irving,
TX 75062
USA
Phone: [phone] * [phone]
Fax: [phone]
Email: [email protected]
IMPORTANT NOTES – NITRO ENGINES
• Always test the brakes and the throttle before starting your engine to avoid losing control of the model.
• Make sure the air filter is clean and oiled.
• Never run your engine without an air filter. Your engine can be seriously damaged if dirt and debris get
inside the engine.
• For proper engine break-in, please refer to the manual that came with the engine.
• Do not run near open flames or smoke while running your model or while handling fuel.
• Some parts will be hot after operation. Do not touch the exhaust or the engine until they have cooled.
These parts may reach 275°F during operation!

3
IMPORTANT NOTES – ELECTRICAL
• Insulate any exposed electrical wiring (using heat shrink tubing or electrical tape) to prevent dangerous
short circuits. Take maximum care in wiring, connecting and insulating cables. Make sure cables are
always connected securely. Check connectors for if they become loose. And if so, reconnect them securely.
Never use R/C models with damaged wires. A damaged wire is extremely dangerous, and can cause
short-circuits resulting in fire. Please have wires repaired at your local hobby shop.
• Low battery power will result in loss of control. Loss of control can occur due to a weak battery in either
the transmitter or the receiver. Weak running battery may also result in an out of control car if your car‘s
receiver power is supplied by the running battery. Stop operation immediately if the car starts to slow
down.
• When not using RC model, always disconnect and remove battery.
• Do not disassemble battery or cut battery cables. If the running battery short-circuits, approximately
300W of electricity can be discharged, leading to fire or burns. Never disassemble battery or cut battery
cables.
• Use a recommended charger for the receiver and transmitter batteries and follow the instructions
correctly. Over-charging, incorrect charging, or using inferior chargers can cause the batteries to become
dangerously hot. Recharge battery when necessary. Continual recharging may damage battery and, in
the worst case, could build up heat leading to fire. If battery becomes extremely hot during recharging,
please ask your local hobby shop for check and/or repair and/or replacement.
• Regularly check the charger for potential hazards such as damage to the cable, plug, casing or other
defects. Ensure that any damage is rectified before using the charger again. Modifying the charger may
cause short-circuit or overcharging leading to a serious accident. Therefore do not modify the charger.
• Always unplug charger when recharging is finished.
• Do not recharge battery while battery is still warm. After use, battery retains heat. Wait until it cools
down before charging.
• Do not allow any metal part to short circuit the receiver batteries or other electrical/electronic device on
the model.
• Immediately stop running if your RC model gets wet as may cause short circuit.
• Please dispose of batteries responsibly. Never put batteries into fire.
WARRANTY
XRAY guarantees this model kit to be free from defects in both material and workmanship within 30 days
of purchase. The total monetary value under warranty will in no case exceed the cost of the original kit
purchased. This warranty does not cover any components damaged by use or modification or as a result
of wear. Part or parts missing from this kit must be reported within 30 days of purchase. No part or parts
will be sent under warranty without proof of purchase. Should you find a defective or missing part, contact
the local distributor. Service and customer support will be provided through local hobby store where you
have purchased the kit, therefore make sure to purchase any XRAY products at your local hobby store. This
model racing car is considered to be a high-performance racing vehicle. As such this vehicle will be used
in an extreme range of conditions and situations, all which may cause premature wear or failure of any
component. XRAY has no control over usage of vehicles once they leave the dealer, therefore XRAY can only
offer warranty against all manufacturer‘s defects in materials, workmanship, and assembly at point of sale
and before use. No warranties are expressed or implied that cover damage caused by what is considered
normal use, or cover or imply how long any model cars‘ components or electronic components will last before
requiring replacement.
Due to the high performance level of this model car you will need to periodically maintain and replace
consumable components. Any and all warranty coverage will not cover replacement of any part or
component damaged by neglect, abuse, or improper or unreasonable use. This includes but is not limited to
damage from crashing, chemical and/or water damage, excessive moisture, improper or no maintenance,
or user modifications which compromise the integrity of components. Warranty will not cover components
that are considered consumable on RC vehicles. XRAY does not pay nor refund shipping on any component
sent to XRAY or its distributors for warranty. XRAY reserves the right to make the final determination of the
warranty status of any component or part.
Limitations of Liability
XRAY makes no other warranties expressed or implied. XRAY shall not be liable for any loss, injury or
damages, whether direct, indirect, special, incidental, or consequential, arising from the use, misuse, or
abuse of this product and/or any product or accessory required to operate this product. In no case shall
XRAY‘s liability excess the monetary value of this product.
Take adequate safety precautions prior to operating this model. You are responsible for this model’s
assembly and safe operation.
Disregard of the any of the above cautions may lead to accidents, personal injury, or property
damage. XRAY MODEL RACING CARS assumes no responsibility for any injury, damage, or
misuse of this product during assembly or operation, nor any addictions that may arise from
the use of this product.
All rights reserved.
QUALITY CERTIFICATE
XRAY MODEL RACING CARS uses only the highest quality materials, the best compounds for molded parts
and the most sophisticated manufacturing processes of TQM (Total Quality Management). We guarantee
that all parts of a newly-purchased kit are manufactured with the highest regard to quality. However, due
to the many factors inherent in model racecar competition, we cannot guarantee any parts once you start
racing the car. Products which have been worn out, abused, neglected or improperly operated will not be
covered under warranty. We wish you enjoyment of this high-quality and high-performance RC car and wish
you best success on the track!
Please note that raw materials such as aluminum, steel, brass, fibreglass, or carbon fibre may
have small scratches on the surface which is a standard characteristic of any raw material.
Scratches on the surface of any materials are NOT considered to be material defects.
Products may potentially have small amounts of corrosion on them. This may be caused by variances in
weather during different times of the year, humidity in the shop or during shipping, and other contributing
factors. Even though we have taken all precautions and protection methods to prevent corrosion, these small
amounts of corrosion (if present) are unavoidable and considered to be acceptable.
In line with our policy of continuous product development, the exact specifications of the kit may vary. In the unlikely event of any problems with your new kit, you should contact the model shop
where you purchased it, quoting the part number. We do reserve all rights to change any specification without prior notice. All rights reserved.
R/C & BUILDING TIPS
• Make sure all fasteners are properly tightened. Check them periodically.
• Make sure that chassis screws do not protrude from the chassis.
•
For the best performance, it is very important that great care is taken to ensure the free movement of all parts.
• Clean all ball-bearings so they move very easily and freely.
• Tap or pre-thread the plastic parts when threading screws.
• Self-tapping screws cut threads into the parts when being tightened. Do not use excessive force when
tightening the self-tapping screws because you may strip out the thread in the plastic. We recommended
you stop tightening a screw when you feel some resistance.
• Ask your local hobby shop for any advice.
Please support your local hobby shop. We at XRAY Model Racing Cars support all local hobby dealers.
Therefore we ask you, if at all possible, to purchase XRAY products at your hobby dealer and give them
your support like we do. If you have difficulty finding XRAY products, please check out www.teamxray.com to
get advice, or contact us via email at [e-mail], or contact the XRAY distributor in your country.
IMPORTANT NOTES – NITRO FUEL
• Handle fuel only outdoors. Never handle nitro fuel indoors, or mix nitro fuel in a place where ventilation
is bad.
• Only use nitro fuel for R/C models. Do not use gasoline or kerosene in R/C models as it may cause a fire
or explosion, and ruin your engine.
• Nitro fuel is highly inflammable, explosive, and poisonous. Never use fuel indoors or in places with open
fires and sources of heat.
• Always keep the fuel container cap tightly shut.
• Always read the warning label on the fuel container for safety information.
• Nitro-powered model engines emit poisonous vapors and gasses. These vapors irritate eyes and can be highly
dangerous to your health. We recommend wearing rubber or vinyl gloves to avoid direct contact with nitro fuel.
• Nitro fuel for RC model cars is made of the combination of the methyl alcohol, castor or synthetic oil,
nitro methane etc. The flammability and volatility of these elements is very high, so be very careful
during handling and storage of nitro fuel.
• Keep nitro fuel away from open flame, sources of heat, direct sunlight, high temperatures, or near
batteries.
• Store fuel in a cool, dry, dark, well-ventilated place, away from heating devices, open flames, direct
sunlight, or batteries. Keep nitro fuel away from children.
• Do not leave the fuel in the carburetor or fuel tank when the model is not in use. There is danger that
the fuel may leak out.
• Wipe up any spilled fuel with a cloth
• Be aware of spilled or leaking fuel. Fuel leaks can cause fires or explosions.
• Do not dispose of fuel or empty fuel containers in a fire. There is danger of explosion.

4
To ensure that you always have access to the most up-to-
date version of the XRAY Set-up Book, XRAY will now be
offering only the digital online version at our website
at www.teamxray.com. By offering this online version
instead of including a hardcopy printed version in kits,
you will always be assured of having the most current
updated version.
SYMBOLS USED
L=R
2x
CA
OIL
Part bags used Assemble left and
right sides the
same way
Assemble in the
specified order
Pay attention
here
Assemble as
many times
as specified
(here twice)
Apply instant
glue
Cut off shaded
portion
Cut off
remaining
material
Tighten screw
gently
TOOLS REQUIRED
EQUIPMENT REQUIRED
TOOLS & EQUIPMENT INCLUDED NOT INCLUDED
Assemble front
and rear the same
way
Apply oil
Use special
tool
Silicone Shock Oil
(HUDY #106411 1000cSt 100ml)
Silicone Diff Oil
(HUDY #106561 60.000cSt 100ml)
(HUDY #106631 300.000cSt 100ml)
Air Filter Oil
(HUDY #106240)
Receiver Pack
Transmitter Engine Manifold & Exhaust Glow Plug IgniterStarter Box & Battery Pack
(HUDY #104500)
Steering and
Throttle Servos
Battery Charger
Receiver
Lexan™ PaintFuel + Fuel Bottle
(HUDY #104200)
Special Tool for all turnbuckles,
nuts (HUDY #181090)
Turnbuckle Wrench
(HUDY #181040 4mm)
(HUDY #181050 5mm)
Phillips 5.0mm
(HUDY TOOLS)
Socket 5.0/5.5mm
(HUDY TOOLS)
Allen 1.5/2.0/2.5/3.0mm
(HUDY TOOLS)
17mm Wheel Nut Tool
(HUDY #107570)
Side Cutters
(HUDY #189010)
Body Reamer
(HUDY #107600)
or
(HUDY #107601)
Cross Wrench
(HUDY #107581)
Flywheel Tool
(HUDY #182015)
Scissors
(HUDY #188990)
Needle Nose Pliers
(HUDY #189020)
Snap Ring Pliers
(HUDY #189040)
➊ ➋ ➌
Apply grease Apply
threadlock
Ensure smooth
non-binding
movement
Use pliers Follow tip here
Arm Reamer 3mm/4mm
(HUDY TOOLS)
Graphite Grease
(HUDY #106210)
Wheels & TiresGT BODY
(XRAY #359730)
Threadlock & CA Glue
Follow Set-up
Book
Use cleaner
or WD-40®
Time
Ball Allen 2.5mm
(HUDY TOOLS)
BOOK
SET-UP
BOOK
SET-UP
Pinion Tool Set
(XRAY #349901)
Pocket Hobby Knife
(HUDY #188981)

5
XB8 TECH TIPS
If there is too much or too little diff side play, this may create non-optimal gear mesh between the diff gear and the pinion drive gear. This is easily resolved by inserting 1 or 2 of the included thin shims behind a diff
outdrive ball-bearing, depending on how much play there is.
FRONT & REAR DIFF GEAR MESH ADJUSTMENT
THE LOCATION OF THE SHIM(S) DEPENDS ON WHETHER YOU ARE TRYING TO CLOSE OR OPEN THE GAP:
TO CLOSE A WIDE GAP
TO OPEN A NARROW GAP
TIP
insert shim(s) here
insert shim(s) here
To CLOSE a wide gap:
add 1 or 2 shims against diff spur gear
To OPEN a narrow gap:
add 1 or 2 shims on the other side of the diff, away from spur gear
OPEN A NARROW GAP
CLOSE A WIDE GAP
#962130 S 13 x 16 x 0.2 mm (10)
#962131 S 13 x 16 x 0.1 mm (10)
WASHER
TIP
Tighten screw until pivot ball is tight
against block.
Lift ball joint until it snaps into place over
pivot ball. Ball joint should move freely.
The finished joint. Loosen and remove screw.
INSTALLING PIVOT BALLS INTO COMPOSITE BALL-JOINTS
Place the pivot ball on the ball joint
and use a screw to tighten it to an
engine mount or some other part.
DRIVE SHAFT PIN SERVICING
TIP
To enjoy the longest possible lifespan of the drive shafts and diff outdrives, it is extremely important to properly service the drive shaft pins.
Inspect the pins after every 3 hours of runtime. If the pins show any wear, replace them with new pins.
For easy drive pin replacements use #106000
HUDY Drive Pin Replacement Tool.
To replace the worn pins use only
premium HUDY drive pins #106050.
Do not use drive shafts
when the pins are worn.
Press out the worn pins. Press in new pins and
regularly inspect for wear.
SUSPENSION & DRIVETRAIN MAINTENANCE
• Check suspension for free movement during building and operation, and especially after running
and if you have crashed the car. If the suspension does not move freely, use the appropriate HUDY
Arm Reamer to clean and resize the holes of the suspension arms.
• Regularly check the drive shaft pins (both side and center) and if they show any wear must be
immediately replaced by new pins. If the car is run with worn pins, excessive wear on the diff
outdrives will result. The 106000 HUDY Drive Pin Replacement Tool (for 3mm Pins) is a compact,
rugged multi-use tool set for replacing 3mm drive pins in drive shafts. Use the HUDY replacement
drive shaft pins 3x14 (#106050).
• Regularly inspect and replace the connecting pins which connect the center drive shafts with the
pinion gear, and also the pins that connect the wheel drive shafts with wheel axles. Use HUDY
Graphite Grease to lubricate the drive shaft connecting joints and the diff gears.
• Pivot balls and ball-joints will naturally wear for some time and will generate play. If there is too
much play the pivot balls and ball joints need to be replaced.
• If the car is run in wet conditions, apply WD-40® on all drivetrain parts before the run. After the
run, clean and dry the parts again.
HUDY SPRING STEEL™
The HUDY Spring Steel™ used in the car is the strongest and most durable steel material on the RC market. While items made from HUDY Spring Steel™ are still subject to wear, the lifespan is considerably
longer than any other material. As parts made from HUDY Spring Steel™ wear, the brown color will after some time “go down” but it will not affect the strength of the material. The brown color is only a
surface treatment and if the brown color will wear the durability of the part will be still strong.

6
DIFFERENTIAL GEARS
STEP DETAIL
➎
➎➏
➏
DETAIL
➊
➋
➌
➍
➎
➏
Graphite Grease
(HUDY #106210)
Graphite Grease
(HUDY #106210)
Use HUDY Ball-Bearing Grease
#106220 - STANDARD
#106221 - BLUE
#106222 - RED
1. FRONT & REAR DIFFERENTIALS
2x
F=R
35 5003 FRONT/REAR DIFFERENTIAL 46T - SET
35 5020 COMPOSITE DIFFERENTIAL CASE
35 5030 STEEL DIFF BEVEL & SATELLITE GEARS (2+4)
35 5046 FRONT/REAR DIFF LARGE BEVEL GEAR 46T - HUDY STEEL
35 5063 F/R DIFF OUTDRIVE ADAPTER - LIGHTW. - HUDY SPRING STEEL™ (2)
35 5080 DIFF PIN (2)
35 5090 DIFF GASKET (4)
90 3312 HEX SCREW SFH M3x12 (10)
94 0816 HIGH-SPEED BALL-BEARING 8x16x5 BLUE COVERED (2)
96 4030 WASHER S 3.5x12x0.2 (10)
96 4060 WASHER S 6x18x0.2 (10)
97 1060 SILICONE O-RING 6x1.5 (10)
98 0212 PIN 2x11.6 (10)
BAG
940816
903312
355046
964060
355030
355030
971060 355020
940816
355090
964030
980212
980212
971060
355080
355063
355063
940816
BB 8x16x5
964060
S 6x18x0.2
971060
O 6x1.5
980212
P 2x11.6
#355005 REAR DIFFERENTIAL 46T - V2 - SET
BOOK
SET-UP
IMPORTANT!
Use the same diff outdrives on both ends of a diff.
• High-performance adjustable front Active Differential™ for improved speed & handling
• Fully adjustable on- and off-power performance using different internal segments and gears
• Improved diff action and traction
• Easy and consistent steering
#355105
ACTIVE FRONT DIFF

7
DIFFERENTIAL OIL
After assembly the differentials should
have a length of 32.3~32.5 mm
measured from the ends of the installed
ball-bearings. If differentials are
longer, retighten the 4 screws holding
the crown gears.
32.3~32.5 mm
➊
➋➌
➍
➎
➏
Use HUDY Ball-Bearing Grease
#106220 - STANDARD
#106221 - BLUE
#106222 - RED
1. FRONT & REAR DIFFERENTIALS
964030
S 3.5x12x0.2
903312
SFH M3x12
2x
➊
➋
➌
➍
Rear diff:
Silicone oil 60.000cSt
Fill just above the satellite
gears.
Front diff 300.000cSt
Rear diff 60.000cSt
Front diff:
Silicone oil 300.000cSt
Fill just above the satellite
gears.
Graphite Grease
(HUDY #106210)
Graphite Grease
(HUDY #106210)
F=R
Tighten the screws equally Finish tightening in this order
STEP DETAIL
DETAIL
BOOK
SET-UP
OILOIL
Fill the differentials
with oil just above the
satellite gears.
IMPORTANT!
VERY IMPORTANT!
OIL
INCORRECT
CORRECT
Do not overfill the differential.
If there is too much oil in the
differential, it may leak after
it cools down after use.
Use the following silicone oils included in the kit for initial settings:
FRONT diff: 300.000cSt / REAR diff: 60.000cSt
#107865 HUDY Ultimate Digital Pocket Scale 300g±0.01g
To ensure you have the same amount of oil from rebuild to rebuild, do the following:
1. Put the diff (without oil) on the scale and check the weight:
- FRONT DIFF approx. 39.94g
- REAR DIFF approx. 39.94g
2. Slowly pour oil into the diff and watch the weight.
The approximate weight of the diff+oil is REAR
DIFF approx. 42.30g and FRONT DIFF approx.
42.52g
REAR REAR
FRONT gg
g
g
FRONT
39.94g + 2.36g = 42.30g
39.94g + 2.58g = 42.52g
OIL
FRONT DIFF
REAR DIFF
39.94
39.94 42.52
42.30
➎
940816
BB 8x16x5
964060
S 6x18x0.2
971060
O 6x1.5
980212
P 2x11.6

8
2. FRONT TRANSMISSION
940816
BB 8x16x5
902312
SH M3x12
980314
P 3x14
901404
SB M4x4
Graphite Grease
(HUDY #106210)
Apply oil from inside
to prevent breakage
of the rubber boot.
SHORT CVD DRIVE SHAFT
BEFORE inserting the clip on the central CVD shaft joint, apply a small
amount of threadlock on the area where the clip goes.
AFTER inserting the clip on the central CVD shaft joint, turn the clip so that
the slot is 90°from the pin. This will prevent the pin from opening the clip.
PIN
DETAIL
Cut on both front
and rear bulkhead blocks
DETAIL
➊
➊
➋
➋
➌
➌
➍
➍
STEP DETAIL
➍
STEP DETAIL
➎
35 2006 DIFF BULKHEAD BLOCK SET FRONT/REAR
35 5003 FRONT/REAR DIFFERENTIAL 46T - SET
35 5114 BEVEL DRIVE GEAR 14T
35 5236 CVD DRIVE SHAFT COUPLING - HUDY SPRING STEEL™
35 5416 CENTRAL CVD SHAFT UNIVERSAL JOINT - HUDY SPRING STEEL™
35 5425 FRONT CENTRAL CVD DRIVE SHAFT - HUDY SPRING STEEL™
35 5471 DRIVE SHAFT LOCKING RING (2)
35 5472 DRIVE SHAFT BOOT (2)
90 1404 HEX SCREW SB M4x4 (10)
90 2312 HEX SCREW SH M3x12 (10)
94 0816 HIGH-SPEED BALL-BEARING 8x16x5 RUBBER SEALED (2)
98 0314 PIN 3x14 (10)
BAG
➎
➎
➎
355003
FRONT DIFF
902312
FRONT DIFF 300.000 cSt
Graphite Grease
(HUDY #106210)
Push joint against gear to remove gap.
Tighten setscrew onto gear flat spot.
The ring can be assembled by hand,
but for easy disassembly we recommend
using snap ring pliers (HUDY #189040)
355472
355471
SHORT
355425
355236
352006
355114
352006
355416
980314
901404
940816
940816
step 1step 2
step 3
OIL
DETAIL
Follow the TECH TIP on page 5
for drive shaft pin servicing
Use HUDY Ball-Bearing Grease
#106220 - STANDARD
#106221 - BLUE
#106222 - RED
NOTE
ORIENTATION

9
2. REAR TRANSMISSION
940816
BB 8x16x5
902312
SH M3x12
980314
P 3x14
901404
SB M4x4
Apply oil from inside to prevent
breakage of the rubber boot.
Graphite Grease
(HUDY #106210)
NOTE
ORIENTATION
LONG CVD DRIVE SHAFT
Cut on both front and
rear bulkhead blocks
BEFORE inserting the clip on the central CVD shaft joint, apply a small amount of
threadlock on the area where the clip goes.
AFTER inserting the clip on the central CVD shaft joint, turn the clip so that the slot is
90°from the pin. This will prevent the pin from opening the clip.
Follow the TECH TIP on page 5
for drive shaft pin servicing.
DETAIL
DETAIL
DETAIL
BAG
➊
➊
➋
➋
➌
➌
➍
➍
STEP DETAIL
➎
35 2006 DIFF BULKHEAD BLOCK SET FRONT/REAR
35 5003 FRONT/REAR DIFFERENTIAL 46T - SET
35 3040 GT GRAPHITE REAR SHOCK TOWER - CNC MACHINED 3.5 MM
35 5114 BEVEL DRIVE GEAR 14T
35 5236 CVD DRIVE SHAFT COUPLING - HUDY SPRING STEEL™
35 5416 CENTRAL CVD SHAFT UNIVERSAL JOINT - HUDY SPRING STEEL™
35 5640 GT REAR CENTRAL CVD DRIVE SHAFT - HUDY SPRING STEEL™
➎
➎
➎
355003
REAR DIFF
902312
Graphite Grease
(HUDY #106210)
REAR DIFF 60.000 cSt
The ring can be assembled by hand,
but for easy disassembly we recommend
using snap ring pliers (HUDY #189040)
Push joint against gear to remove gap.
Tighten setscrew onto gear flat spot.
902312
355471
355472 LONG
355640
355236
352006
355114
352006 353040
355416
980314
901404
940816
940816
PIN
STEP DETAIL
➍
step 1step 2
step 3
OIL
35 5471 DRIVE SHAFT LOCKING RING (2)
35 5472 DRIVE SHAFT BOOT (2)
90 1404 HEX SCREW SB M4x4 (10)
90 2312 HEX SCREW SH M3x12 (10)
94 0816 HIGH-SPEED BALL-BEARING 8x16x5 RUBBER SEALED (2)
98 0314 PIN 3x14 (10)
step 4
Use HUDY Ball-Bearing Grease
#106220 - STANDARD
#106221 - BLUE
#106222 - RED

10
BAG
3. REAR SUSPENSION
909395
353426
353371
352006
909372
353317
352314
902318
903308
901305
901303
333450
352470
901312
352470
353123
352460
33 3450 ANTI-ROLL BAR BALL JOINT 5.8 MM (2)
35 2006 DIFF BULKHEAD BLOCK SET FRONT/REAR
35 2314 COMPOSITE ECCENTRIC BUSHINGS - V2 (2)
35 2460 PIVOT BALL 5.8 (10)
35 2470 BALL JOINT 5.8 (8)
35 3113 COMPOSITE REAR LOWER SUSPENSION ARM - RIGHT
35 3123 COMPOSITE REAR LOWER SUSPENSION ARM - LEFT
35 3317 ALU REAR LOWER SUSP. HOLDER - FRONT - SQUARE ADJ. ROLL CENTER
35 3325 ALU REAR LOWER SUSP. HOLDER - REAR - SQUARE ADJ. ROLL CENTER
35 3371 SET OF COMPOSITE LOWER ARM SHIMS
35 3426 REAR ANTI-ROLL BAR 2.6MM
35 7212 LOWER INNER PIVOT PIN F+R (2)
357212
352314
353113
353325
901412
90 1303 HEX SCREW SB M3x3 (10)
90 1305 HEX SCREW SB M3x5 (10)
90 1312 HEX SCREW SB M3x12 (10)
90 1412 HEX SCREW SB M4x12 (10)
90 2318 HEX SCREW SH M3x18 (10)
90 3308 HEX SCREW SFH M3x8 (10))
90 9372 SCREW PHILLIPS SS 3.5x22 (10)
90 9395 SCREW PHILLIPS SS 3.5x45 (10)
REAR ANTI-ROLL BARS
#353422 ø2.2mm OPTION
#353424 ø2.4mm OPTION
#353425 ø2.5mm OPTION
#353426 ø2.6mm INCLUDED
#353428 ø2.8mm OPTION
#353430 ø3.0mm OPTION
#353115 COMPOSITE REAR LOWER SUSPENSION ARM
#353316 ALU REAR LOWER SUSP. HOLDER - FRONT - SQUARE ADJ. ROLL CENTER
#353327 ALU REAR LOWER SUSP. HOLDER - REAR - SQUARE ADJ. ROLL CENTER
#333451
ALU ANTI-ROLL BAR PIVOT BALL 5.8 MM - SWISS 7075 T6 - HARDCOATED (2)

11
TOE-IN
ANTI-SQUAT
ROLL CENTER DOWNSTOP
WHEELBASE
TRACK WIDTH
3. REAR SUSPENSION
909395
SS 3.5x45
909372
SS 3.5x22
901412
SB M4x12
353371
SHIM 4x10x2
Check for free movement
REAR ARM ORIENTATION
➊
➊
➋
➌
➌
➍
➍
➎
2mm
4x12mm
RR
RF
All possible mounting
alternatives of eccentric bushings
Push the arm from both sides to create play
INITIAL SETTING
RF
0.5°
1°
INITIAL SETTING
RR
0.5°
1°
DETAIL DETAIL
ECCENTRIC BUSHINGS HAVE TWO DIFFERENT OFFSETS FROM THE CENTER.
Middle position = 0.5 mm or 0.5° from center Outer position = 1mm or 1° from center
3.5x45mm
3.5x22mm
BOOK
SET-UP
DETAIL
The new XRAY rear alu lower suspension holders provide even greater range of adjustment for the rear suspension. Using different combinations of eccentric bushings, fine adjustment of rear anti-squat, rear
toe-in, rear roll center, and rear track-width can be obtained. For more information about the influence of rear anti-squat, rear toe-in, rear roll center and rear track width on car handling, please refer to HUDY
Off-Road Set-up Book (#209099).
The tables describe the amounts of rear anti-squat, rear toe-in, rear track-width change depending
on the combinations of eccentric bushings used with 0 and 1mm, 1° off set. The 0.5mm, 0.5° represent
the half change.
Example: 0(RR) - 0 (RF) = 3°
0(RR) - 0.5 (RF) = 3.5°
0(RR) - 1 (RF) = 4°
ANTI-SQUAT ROLL CENTER TRACK-WIDTH TOE-IN
RR RR RR RRRF RF RF RF(°) (mm) (mm) (°)
=3°
=4°
=2°
=4°
=3°
=5°
=2°
=3°
=1°
= 3°
= 3.5°
= 4°
=0mm
=1mm
=-1mm
=308
=306
=310
=3°
=4°
=2°
=2°
=3°
=1°
=4°
=5°
=3°
(HUDY #107634)
If the suspension arm does not move
freely use a HUDY Arm Reamer to
resize the holes of the arms.
DETAIL
ARM REAMER
NOTE
ORIENTATION
NOTE
ORIENTATION
5.5mm
DOWNSTOP SETTING
DETAIL

12
3. REAR SUSPENSION
ANTI-ROLL BAR
901303
SB M3x3
901305
SB M3x5
901312
SB M3x12
902318
SH M3x18
903308
SFH M3x8
1.5mm
6mm
DETAIL
-2~0mm
L=R
STEP DETAIL
➍
DETAIL
Loosen the 3x5 setscrew if the
anti-roll bar does not turn freely
Step
➊
DETAIL
Step check for free movement
➊
DETAIL
➋
➊
➌
3x5mm
3x8mm
3x3mm
3x18mm
L=R
2x
Follow the TECH TIP on page 5 to install the pivot balls
BOOK
SET-UP
REAR ANTI-ROLL BARS
#353422 ø2.2mm OPTION
#353424 ø2.4mm OPTION
#353425 ø2.5mm OPTION
#353426 ø2.6mm INCLUDED
#353428 ø2.8mm OPTION
#353430 ø3.0mm OPTION

13
980317
P 3x17
901504
SB M5x4
940814
BB 8x14x4
941319
BB 13x19x4
960030
N M3
980263
P 2.5x13 903416
SFH M4x16
2x
L=R
➊
➋
➌
➍
➑
➐
➒
➏
➍
➎
L=R
Graphite Grease
(HUDY #106210)
INITIAL SETTING
Alternative 01 Alternative 02
3x17mm
2.5x13mm
8x14x4mm
13x19x4mm
Follow the TECH TIP on page
5 for drive shaft pin servicing
Use HUDY Ball-Bearing
Grease or Oil for servicing:
#106220 - Standard
#106221 - Extra
#106222 - Premium
#106230 - Bearing Oil
L=R
To tighten the setscrew you can
also use the HUDY 17mm Wheel
Nut Tool #107570
2.5mm
L=R
4. REAR SUSPENSION
35 2234 ALU REAR HUB MOUNTING PLATE - SWISS 7075 T6
35 2633 ADJ. TURNBUCKLE M5 L/R 72 MM - HUDY SPRING STEEL™ (2)
35 2657 BALL STUD 6.8MM WITH BACKSTOP L=8MM - M4x6 (2)
35 3020 COMPOSITE REAR BRACE HOLDER
35 3131 REAR UPPER INNER CAMBER LINK BALL JOINT - V3 (2)
35 3160 MOUNTING BALL 6.8 (4)
35 3352 COMPOSITE REAR UPRIGHT
35 3370 SET OF COMPOSITE REAR HUB CARRIER SHIMS
35 3523 GT COMPOSITE REAR HOLDER POST (2)
35 5211 CVD DRIVE AXLE - HUDY SPRING STEEL™
35 5221 CVD UNIVERSAL DRIVE SHAFT - HUDY SPRING STEEL™
35 5237 CVD DRIVE SHAFT COUPLING - HUDY SPRING STEEL™
35 5250 ALU WHEEL AXLE - BLACK COATED (2)
BAG
35 7331 REAR LOWER OUTER PIVOT PIN SCREW 3MM (2)
90 1504 HEX SCREW SB M5x4 (10)
90 2318 HEX SCREW SH M3x18 (10)
90 2320 HEX SCREW SH M3x20 (10)
90 3312 HEX SCREW SH M3x12 (10)
90 3416 HEX SCREW SH M4x16 (10)
94 0814 HIGH-SPEED BALL-BEARING 8x14x4 BLUE COVERED (2)
94 1319 HIGH-SPEED BALL-BEARING 13x19x4 BLUE COVERED (2)
96 0030 NUT M3 (10)
98 0263 PIN 2.5x13 (10)
98 0317 PIN 3x17 (10)
OFFSET WHEEL AXLES
#355250 0mm INCLUDED
#355251 +1mm OPTION
#355252 +2mm OPTION
OFFSET WHEEL AXLES
#355250 0mm INCLUDED
#355251 +1mm OPTION
#355252 +2mm OPTION
357331
902320
903312
902318 353160
353131
980263
355237
355221
352657
903416
352234
353370
353352
980317
960030
353020
353523
902318
960030
960030
353131
352633
355211
941319
353370
940814
355250
901504
#355222
UNIVERSAL DRIVE SHAFT
HUDY SPRING STEEL™ - SET
#355222
UNIVERSAL DRIVE SHAFT
HUDY SPRING STEEL™ - SET

14
4. REAR SUSPENSION
CAMBER
353370
SHIM 3x9x1
353370
SHIM 3x9x2
960030
N M3
Follow the TECH TIP on page 5
to install the pivot balls
NOTE ORIENTATION NOTE ORIENTATION
Right threadLeft thread Right thread Left thread
43.5 mm 43.5 mm
RIGHT
THREAD
RIGHT THREAD
LEFT
THREAD LEFT THREAD
Follow the TECH TIP on page 5
to install the pivot balls
OIL
OIL
OIL
OIL
INITIAL SETTING
Check for free
movement
DETAILDETAIL
Use tools
to tighten as shown
DETAIL
DETAIL
Ensure that the rear upright moves freely.
If it does not move freely, use sandpaper
to thin both wheelbase adjustment shims.
Shims for wheelbase
adjustment
Do not overtighten the self-locking nut.
Overtightening may result in suspension binding.
2x
L=R
L=R
2x
1mm
2mm
1mm
BOOK
SET-UP
Special Tool for all turnbuckles & nuts (HUDY #181090)
or Turnbuckle Wrench 5mm (HUDY #181050)
(HUDY #107633)
If the suspension arm does
not move freely use a HUDY
Arm Reamer to resize the
holes of the arms.
ARM REAMER

15
4. REAR SUSPENSION
353380
SHIM 4x7.5x1
353381
SHIM 4x7.5x2
960030
N M3
902318
SH M3x18
960030
N M3
903312
SFH M3x12
902318
SH M3x18
902320
SH M3x20
DETAIL
INITIAL SETTING
INITIAL SETTING
2x
2x
L=R
L=R
L=R
Optional shims can be used for roll
center adjustment.
#353380 - Alu shim 4x7.5x1mm
#353381 - Alu shim 4x7.5x2mm
3x20mm
3x18mm

16
909372
901410
902318
352120
909395
901303
901312
901305
903308
352324
352314
357212
352314
353371
353371
333450
352470
352496
352470
352460
352006
352323
FRONT ANTI-ROLL BARS
#352492 2.2mm OPTION
#352493 2.3mm OPTION
#352494 2.4mm OPTION
#352495 2.5mm OPTION
#352496 2.6mm INCLUDED
5. FRONT SUSPENSION
33 3450 ANTI-ROLL BAR BALL JOINT 5.8 MM (2)
35 2006 DIFF BULKHEAD BLOCK SET FRONT/REAR
35 2120 COMPOSITE FRONT LOWER SUSPENSION ARM
35 2314 COMPOSITE SQUARE ADJ. ROLL CENTER BUSHINGS - V2 (2)
35 2323 ALU FRONT LOWER SUSP. HOLDER - FRONT - SQUARE ADJ. ROLL CENTER - V2
35 2324 ALU FRONT LOWER SUSP. HOLDER - REAR - SQUARE ADJ. ROLL CENTER - V2
35 2460 PIVOT BALL 5.8 (10)
35 2470 BALL JOINT 5.8 (8)
35 2496 FRONT ANTI-ROLL BAR 2.6MM
35 3371 SET OF COMPOSITE LOWER ARM SHIMS
35 7212 LOWER INNER PIVOT PIN F+R (2)
90 1303 HEX SCREW SB M3x3 (10)
90 1305 HEX SCREW SB M3x5 (10)
90 1312 HEX SCREW SB M3x12 (10)
90 1410 HEX SCREW SB M4x10 (10)
90 2318 HEX SCREW SH M3x18 (10)
90 3308 HEX SCREW SFH M3x8 (10))
90 9372 SCREW PHILLIPS SS 3.5x22 (10)
90 9395 SCREW PHILLIPS SS 3.5x45 (10)
BAG
#333451
ALU ANTI-ROLL BAR PIVOT BALL 5.8 MM - SWISS 7075 T6 - HARDCOATED (2)

17
5. FRONT SUSPENSION
KICK UP
ROLL CENTER DOWNSTOP
WHEELBASE
TRACK WIDTH
901410
SB M4x10
909395
SS 3.5x45
909372
SS 3.5x22
353371
SHIM 4x10x2
All possible mounting alternatives
of eccentric bushings
3.5x22mm
3.5x45mm
The tables below describe the amounts of kick-up, front track-width change depending on the combinations
of eccentric bushings used with 0 and 1mm, 1° offset. The 0.5mm, 0.5° represents the half change.
TRACK-WIDTH ROLL CENTER
FF FFFR FR(mm) (mm)
=308
=306
=310
=1
=0
=-1
The XRAY alu front lower suspension holders provide even greater range of
adjustment for the front suspension. Using different combinations of eccentric
bushings, fine adjustment of front kick-up, roll center, and front track-width
can be obtained. For more information about the influence of kick-up, front
track-width, and roll centers on car handling, please refer to HUDY Off-Road
Set-up Book (#209099).
Eccentric bushings have two different offsets from the center.
Middle position = 0.5 mm or 0.5° from center
Outer position = 1mm or 1° from center
➊
➊
➋
➌
➌
➍
➍
➎
4x10mm
FR
FF
2mm
2mm
4mm 4mm
4mm 4mm
2mm
2mm
2mm
2mm
DETAIL
FRONT ARM
L=R
DETAIL
Check for free movement
DETAIL
Push the arm from both sides to create play
INITIAL SETTING
FF
0.5°
1°
INITIAL SETTING
FR
0.5°
1°
(HUDY #107634)
ARM REAMER
If the suspension arms do not move freely,
use a HUDY Arm Reamer to resize the holes.
DETAIL
4.2mm
DOWNSTOP SETTING
DETAIL
INITIAL SETTING ALTERNATIVE SETTINGALTERNATIVE SETTING
BOOK
SET-UP

18
5. FRONT SUSPENSION
ANTI-ROLL BAR
901303
SB M3x3
901305
SB M3x5
901312
SB M3x12
902318
SH M3x18
903308
SFH M3x8
3x3mm
3x5mm
3x8mm
-2~0mm
3x18mm
L=R
2x
Loosen the 3x5 setscrew if
the anti-roll bar does not
turn freely
Step
➊
➊
➋
➌
➍
L=R
STEP DETAIL
➍
1.5mm
6mm
Follow the TECH TIP on page 5 to
install the pivot balls
DETAIL
DETAIL
DETAIL
Step check for free movement
➊
DETAIL
BOOK
SET-UP
FRONT ANTI-ROLL BARS
#352492 2.2mm OPTION
#352493 2.3mm OPTION
#352494 2.4mm OPTION
#352495 2.5mm OPTION
#352496 2.6mm INCLUDED

19
➊
➋
Use HUDY Ball-Bearing
Grease or Oil for servicing:
#106220 - Standard
#106221 - Extra
#106222 - Premium
#106230 - Bearing Oil
35 2132 FRONT UPPER ARM RIGHT
35 2142 FRONT UPPER ARM LEFT
35 2153 FRONT UPPER ARM BALL JOINT (L+R)
35 2240 STEERING BLOCK
35 2376 GT ALU STEERING KING PIN PLATE 0°-7° - SWISS 7075 T6 - L+R
35 2624 ADJ. TURNBUCKLE M5 L/R 38 MM - HUDY SPRING STEEL™ (2)
35 3172 PIVOT BALL 11.0 (2)
35 5211 CVD DRIVE AXLE - HUDY SPRING STEEL™
35 5221 CVD UNIVERSAL DRIVE SHAFT - HUDY SPRING STEEL™
35 5237 CVD DRIVE SHAFT COUPLING - HUDY SPRING STEEL™
35 5250 ALU WHEEL AXLE - BLACK COATED (2)
35 7250 STEEL PIVOT BALL 13.7 MM (2)
Graphite Grease
(HUDY #106210)
2.5mm
To tighten the setscrew you can
also use the HUDY 17mm Wheel
Nut Tool #107570
Follow the TECH TIP on page 5
for drive shaft pin servicing
➎
➍
➍
➏
➐
➑
➌
3x17mm
2.5x13mm
8x14x4mm
13x19x4mm
4x16mm
35 7252 ALU ADJUSTING NUT M15x1 (2)
35 7254 COMPOSITE BALL CUP 13.9 MM (2)
35 7256 ALU SHIM 6x13x1 (2)
90 1504 HEX SCREW SB M5x4 (10)
90 3416 HEX SCREW SFH M4x16 (10)
94 0814 HIGH-SPEED BALL-BEARING 8x14x4 BLUE COVERED (2)
94 1319 HIGH-SPEED BALL-BEARING 13x19x4 BLUE COVERED (2)
98 0263 PIN 2.5x13 (10)
98 0317 PIN 3x17 (10)
980263
901504
SB M5x4
940814
BB 8x14x4
980317
P 3x17
903416
SFH M4x16
980263
P 2.5x13
941319
BB 13x19x4
352376
353172
903416
352153
352376
357256
352624
352153
353172
352240
357250
941319
355211 355237
352132
352142
352624
980317
355250
901504
357254
357252
940814
903416 355221
6. FRONT SUSPENSION
BAG
L=R
2x
#357253
BRASS ADJUSTING NUT M15x1
OFFSET WHEEL AXLES
#355250 0mm INCLUDED
#355251 +1mm OPTION
#355252 +2mm OPTION
OFFSET WHEEL AXLES
#355250 0mm INCLUDED
#355251 +1mm OPTION
#355252 +2mm OPTION
#352235
ALU STEERING KING PIN PLATE 10° - SWISS 7075 T6 - L+R
#352235
ALU STEERING KING PIN PLATE
SWISS 7075 T6 - L+R 10°
#357251
ALU PIVOT BALL 13.7MM WITH STEEL SCREW (2)
#355222
UNIVERSAL DRIVE SHAFT - HUDY SPRING STEEL™ - SET
#355222
UNIVERSAL DRIVE SHAFT
HUDY SPRING STEEL™ - SET

20
ROLL CENTER
CAMBER
ROLL CENTER
357256
SHIM 6x13x1
L=R
PIVOT BALLS MUST MOVE FREELY
During initial assembly, tighten each
composite hex nut until the pivot ball
starts to bind, then loosen slightly.
Verify that the pivot balls move freely.
Tighten composite hex nuts
using HUDY tool #107581
2.5mm
353380
SHIM 4x7.5x1
353381
SHIM 4x7.5x2
DETAIL
2.5mm
2.5mm
DETAIL DETAIL
6. FRONT SUSPENSION
Apply WD40 to
protect against rust
Apply WD40 to
protect against rust
HUDY Tool Allen 2.5mm
30mm
1mm
L=R
L=R
L=R
L=R
2x
2x
2x
2x
2.5mm
SHORT LONG
HUDY Tool Allen Ball 2.5mm
Marked (L) = Marked (L)
106mm106mm
Marked (R) = Marked (R)
DETAIL
INITIAL SETTING
L=R
#357253
BRASS ADJUSTING NUT M15x1
#357251 ALU PIVOT BALL
13.7MM WITH STEEL SCREW (2)
Optional shims can be used for Roll
Center adjustment.
#353380 - Alu shim 4x7.5x1mm
#353381 - Alu shim 4x7.5x2mm