Stealth bomber User manual

Stealth Electric Bikes Owner’s Manual
IMPORTANT:
This manual contains important safety, performance and service information. Read it before you take the first ride on
your new Stealth Bike, and keep it for future reference.
Additional safety, performance and service information for specific components such as transmission, suspension or
brakes on your bike may also be available. Make sure that your dealer has given you all of the manufacturers’
literature that was included with your bike or accessories. In case of a conflict between the instructions in this manual
and information provided by a component manufacturer, always follow the component manufacturer’s instructions.
To the best knowledge of Stealth Electric Bikes, the material contained herein is accurate as of the date this
publication was approved for printing. Stealth Electric Bikes reserves the right to change specifications, equipment,
or designs at any time without notice and without incurring obligation. Illustrations in this manual are merely for
demonstration purposes and may not exactly match the detail described.
NOTE:
This manual is not intended as a comprehensive use, service, repair or maintenance manual. Please see your
dealer for all service, repairs or maintenance. Your dealer may also be able to refer you to classes, clinics or
books on bike use, service, repair or maintenance.
PRODUCT REGISTRATION
In order to receive full warranty support, you must completely fill out the online warranty registration form upon
receiving your bike.
This can be found at: www. XXXXXXX
To see Stealth Electric Bikes current limited warranty and related warranty claims information please visit:
http://www.stealthelectricbikes.com.au/policies.html
Outside the USA and Canada, the WARRANTY REGISTRATION CARD included in the back of this Owners Manual must
be filled out immediately and returned to the Stealth Electric Bikes distributor in your country or at their website if
that distributor offers web based warranty registration. The contact information of the distributor in the country in
which you bought your bike is listed at: http://www.stealthelectricbikes.com
Warranty policies vary depending upon the Stealth Distributor in the country of your purchase. Please check with
your Stealth Dealer or the Stealth Distributor in your country for the warranty policy covering your purchase.

Stealth Electric Bikes Owner’s Manual
2
CONGRATULATIONS!
Welcome to the Stealth Electric Bike community and congratulations on your purchase.
Stealth Electric Bikes redefine the ride experience. They are considered by peers to be the toughest and most powerful
hybrid electric bikes in the world.
These hybrid electric bikes come standard with hydraulic disc brakes, take only 2 hours to charge, and are silent with
zero emissions. So if you need to get there faster or just have a lot more fun, use your Stealth Electric Bike.
Ready for flight?
Stealth Electric Bikes manufacture a range of e-bikes so this manual may contain some information that does not
apply to your bike. Some illustrations may vary from your actual bike.
If you have any questions after reading the information in this manual, consult your local dealer.
SERIAL NUMBER:______________________
Date of purchase:_______________

Stealth Electric Bikes Owner’s Manual
3
CONTENTS
SAFE OPERATION ......................................................................................................................................................................... 5
BATTERY CARE.......................................................................................................................................................................... 5
BEFORE RIDING YOUR BIKE...................................................................................................................................................... 5
WHILST RIDING YOUR BIKE ...................................................................................................................................................... 6
OFF ROAD RIDING .................................................................................................................................................................... 6
STEALTH BIKE CARE...................................................................................................................................................................... 7
CLEANING................................................................................................................................................................................. 7
STORAGE .................................................................................................................................................................................. 7
ASSEMBLING YOUR BIKE.............................................................................................................................................................. 8
OUT OF THE CRATE .................................................................................................................................................................. 8
YOUR FIRST RIDE ........................................................................................................................................................................ 13
BATTERY BREAK IN................................................................................................................................................................. 13
THROTTLE............................................................................................................................................................................... 13
BRAKES ................................................................................................................................................................................... 13
REGENERATIVE BRAKING ....................................................................................................................................................... 14
GEAR SELECTOR ..................................................................................................................................................................... 14
CYCLE ANALYST ...................................................................................................................................................................... 15
RIDING EFFICIENTLY ................................................................................................................................................................... 17
ADJUSTING YOUR BIKE............................................................................................................................................................... 19
TYRES...................................................................................................................................................................................... 19
CHAIN ..................................................................................................................................................................................... 19
SUSPENSION........................................................................................................................................................................... 20
MAINTENANCE SCHEDULE......................................................................................................................................................... 23
EVERY RIDE............................................................................................................................................................................. 23
EVERY MONTH ....................................................................................................................................................................... 23
EVERY SIX MONTHS................................................................................................................................................................ 24
TROUBLESHOOTING................................................................................................................................................................... 25
BMS RESET PROCEDURE ........................................................................................................................................................ 26
APPENDIX 1: RECOMMENDED TORQUE VALUES....................................................................................................................... 27
WARRANTY................................................................................................................................................................................. 28
Stealth Electric Bikes Warranty Registration ............................................................................................................................. 29

Stealth Electric Bikes Owner’s Manual
4
GENERAL WARNING
All sport involves risk of injury or death. In choosing to ride a Stealth Bike, you accept that risk and take responsibility
to learn and practise safe and responsible riding.
This e-bike is sold with a limited warranty against defective workmanship. In some countries it does not conform to
federal motor vehicle safety standards and operation on public roads, streets or highways may be illegal. Before
operating this vehicle, first determine that its use is legal in that given area. It’s your responsibility to familiarise
yourself with the laws of the areas where you ride, and to comply with all applicable laws.
The bike is designed and constructed as an operator only model. The load limit and seating configuration do not
safely permit the carrying of passengers.
This Manual contains several “Warnings” and “Cautions” concerning the consequences of failure to maintain or
inspect your bike and of failure to follow safe riding practices.
WARNING11
In this manual, the WARNING sign indicates a hazardous situation which, if not avoided, could result in death or
serious injury.
Because it is impossible to anticipate every situation or condition which can occur while riding, this Manual makes no
representation about the safe use of the E-bikes under all conditions. By choosing to ride a Stealth Bike, you are
assuming the responsibility for the risks associated with riding. Proper use and maintenance will reduce risk of injury.

Stealth Electric Bikes Owner’s Manual
5
SAFE OPERATION
Even if you have ridden a bike for years, it is important you read this manual in full before you ride your new bike.
Make sure that you fully understand each section and refer to your dealer if you have any questions.
BATTERY CARE
1. Charge after every use.
2. Exercise caution when removing the battery pack. Always ensure that hands are dry and never insert any
object into the ends of the battery connectors.
3. Do not drop, or throw the battery and avoid puncturing or subjecting the battery to excessive shock loads
when not inside the bike.
4. Do not subject the battery pack to temperatures above 45˚C or below -5˚C.
5. Never leave the battery unoccupied whilst charging.
6. Always disconnect charger when the battery is fully charged.
7. Do not leave the charger connected and switched on for prolonged periods. i.e. days at a time.
BEFORE RIDING YOUR BIKE
1. Always wear an approved helmet when riding and follow the helmet manufacturer’s instructions for fit, use
and care. Stealth Electric Bikes strongly recommend the use of a motorcycle helmet due to the extreme speeds
which can be reached on our bikes. Always wear sturdy footwear which grips to the pedals. Ensure shoe laces
and other loose clothing are safely secured.
2. Obey the local laws. E-bike laws can vary from country to country and from state to state. Please make sure
that you understand the laws regarding the use of electric vehicles in and around your local area.
3. Make sure tyres are properly inflated according to manufacturers’ standards. See section …
4. Riding with an improperly secured wheel can result in wheel wobble or disconnection to the bike, which can
cause serious injury or death. Therefore, it is essential that you check the wheel fasteners prior to every ride.
See section…
5. Not all accessories are compatible with your Stealth Bike. The unique engineering on your e-bike means that
only specially designed and approved accessories should be used. An improperly modified frame, fork, or
component can cause you to lose control. Changing or modifying components without the assistance of a
dealer is undertaken at your own risk.

Stealth Electric Bikes Owner’s Manual
6
WHILST RIDING YOUR BIKE
Even though your Stealth Bike has been constructed using the highest quality materials, if you exceed the limit of
strength of your bike or a given part, it may fail. After any high force load, thoroughly inspect all the parts of your bike.
High force loads include crashes, but you don't necessarily have to crash to put a high force load on your bike.
1. Do not ride beyond your limits or the design limits of the bike. If you are unsure of the limits of the bike,
consult your dealer.
2. Avoid improper braking by understanding and practicing proper application of your brakes.
3. Do not ride while intoxicated or while using medications which might affect your ability to ride.
4. Never ride barefoot or in sandals. It is also important to consider the use of gloves, eye protection and body
armour during operation.
5. Do not ride with loose objects attached to the handlebar or any other part of the bike.
6. Do not carry passengers.
7. Never ride your bike whilst holding onto another vehicle.
OFF ROAD RIDING
1. Ride only on designated trails. Avoid large rocks, branches, or depressions. When approaching a descent,
reduce speed, keep your weight back and low, and use the rear brake more than the front.
2. Always respect private property and remember you may be sharing the trail with others. Respect their rights.
These bikes allow you to access many places that are not usually accessible by conventional modes of
transport. The high torque and smooth power delivery helps to minimise the footprint left on loose and
slippery surfaces. In some instances however, there is the potential for the tyres to break traction or slide.
Please help to preserve environmentally fragile areas and help to keep trails open for future use by riding
sensibly and avoiding unnecessary brake slides and wheel spin where possible.

Stealth Electric Bikes Owner’s Manual
7
STEALTH BIKE CARE
Stealth Electric Bikes can be ridden in a multitude of environments and weather conditions. While these bikes are
water resistant, care must be taken in exceptionally wet conditions and the bikes must never be submerged in water
in any way. Rain or snow may cause the metal on your e-bike to corrode and also affect the electrical system.
CLEANING
High pressure washers should not be used for cleaning. While the bikes are very well sealed, water ingress may occur
as a result of high pressure water being forced past seals and into electronic components. The preferred method for
cleaning is with a sponge and warm soapy water.
STORAGE
If the bike is going to be stored for periods of more than 3 weeks, it is preferred that the battery is disconnected from
the bike. During prolonged periods of inactivity, the battery should be connected to the charger for 1 hour every
month in order to prolong the life of the battery.
Due to the weight and unique style of your Stealth Bike, only an approved Stealth Electric Bike rack should be used to
carry your bike. Bikes should be properly secured in an upright position to prevent damage to the controls and cranks
during transport.
Do not expose your bike to extreme highs or lows of temperature. Ideally the bike should be stored at temperatures
between -5˚C and 45˚C.
Avoid storing the bike in wet or damp areas or areas that are prone to extended periods of direct sunlight.
If you have to ship your bike, make sure it is properly packed and protected to avoid damage.
WARNING
Excessive water exposure will void your warranty. This is an electric bike and all care should be taken to avoid excessive
water exposure.
WARNING
Riding your Stealth Bike in sand will void your warranty. Due to the demands of deep sand on the power train of the
bike, we advise that this bike should not to be ridden in sand.

Stealth Electric Bikes Owner’s Manual
8
ASSEMBLING YOUR BIKE
CAUTION
Working on your bike can be hazardous in ways that may not appear obvious. The presence of others in your work
environment can contribute and increase the likelihood of such accidents. Please take every precaution to maximise
safety when working on or around your bike.
Ensure that the power is always switched off and/or, the battery/motor cables are disconnected.
Always ensure that hands are dry and the work area is free of water.
OUT OF THE CRATE
You will need to assemble some components of the bike before riding. The following components should be
assembled in order.
1. Install the handlebars
CAUTION
Ensure that cables and wire are free and not fouling on any part of the frame or any other components.
Correct tightening of fasteners requires a calibrated torque wrench. Torque specifications can be
found in the Appendix 1 of this manual.
The handlebars come from the factory with all controls installed and ready.
i. Remove the 4 bolts around stem cap using a 6mm Allen key.
ii. Remove cap from stem.
iii. Gently and carefully cut tape securing forks to stem and remove bubble wrap.
iv. Install handlebars on stem making sure that wires and cables are moving freely and not fouled in any way.
v. Loosely reinstall the end cap on the stem using the same 4 bolts.
vi. Check alignment of handlebars and preferred riding position.
vii. Evenly tighten bolts to correct tension (see Appendix 1 for recommended torque values).
WARNING
Electricity has the potential to kill. Do not tamper with the electrical components of the bike without authorisation
from a Stealth technician or dealer.

Stealth Electric Bikes Owner’s Manual
9
2. Install the front wheel
For ease of transport, your bike may come with the front wheel uninstalled. The 20mm thru axle needs to be correctly
inserted into the dropout when installing the wheel.
RST
The axle should be inserted from the LHS and wound in a clockwise direction with the locking nut (left hand thread)
wound in to the RH end of the axle in an anti-clockwise direction.
Important:
When removing the front wheel, always undo the lock nut first. The lock nut is located at the RH end of the axle and
can be released by turning the lock nut in a clockwise direction.
Remove stem cap
Hold assembly for
ease of installation
Remove axle
Slide axle through
hub
Tighten with 8mm
Allen key

Stealth Electric Bikes Owner’s Manual
10
White Brothers
If your bike is equipped with White Brothers forks see White Brothers manual for wheel installation.
3. Install the pedals
Bomber:
Pedals come pre-fitted to the cranks at delivery. The pedal/crank assemblies can be installed using an 8mm Allen key.
i. Ensure pedal is securely fastened to the crank.
ii. Connect pedal/crank assembly to gearbox.
Fighter:
Cranks come pre-fitted to bike. The pedals can be fitted using a 15mm pedal spanner.
i. Unwrap pedals and separate left from right, represented as a L and R respectively on the end of the thread.
ii. Tighten on to respective cranks using pedal spanner.
4. Install the seat post
The supplied seat posts are extra-long and suitable for taller riders. Shorter riders may find that they need to cut the
length of the seat post to avoid contact with the rear shock. Avoid contact between the shock spring and the seat post
and make sure that the shock will not contact the seat post when the suspension is fully compressed.
i. Bolt the seat to the post loosely.
ii. Slide the seat post into the seat tube and adjust the height accordingly.
iii. Adjust the tilt of the seat back and forth using the adjusters located on the seat post.
iv. Tighten all bolts. Ensure that there is always a minimum of 50mm of overlap between the seat post and the
seat tube (frame).
Loosen rear bolt
Fit clamp to seat rails.
Tighten bolts to get desired
seat angle.
WARNING
When installing the cranks and pedals to the bike please take note that the pedals and cranks are labelled “L” and “R”
and must be installed accordingly. Failure to do so can result in serious injury and damage to the bike.

Stealth Electric Bikes Owner’s Manual
11
5. Inflate the tires
Tyres should be inflated to no less than 25psi and no more than 65psi. Check the wear and tear on the tyres and
replace if damaged.
6. Charge the battery (Battery charging procedure)
Your battery has been pre tested and will last around 700 charge cycles or 2 years. Performance and mileage of the
battery varies depending on battery temperature, terrain, rider weight, tyre pressure, etc. As with any battery, it has a
limited lifetime however there are some things you can do to increase battery life.
Ensure battery is fully charged before use.
Use only the specified Stealth battery charger at all times.
Recharge at any opportunity (rather than completely discharging battery when not necessary).
Disconnect the charger when battery is fully charged.
Stealth battery packs have no memory effect. This means that they can be recharged or discharged from any state of
charge. Wherever possible keep your battery fully charged.
Check that the seat post does not
collide with shock under full
compression before riding
WARNING
Only use the charger specified by Stealth Electric Bikes. Failure to do so may result in serious injury or damage to
property.
WARNING
Do not disassemble the battery case under any circumstances. Tampering with the battery will void warranty and could
lead to explosions causing serious injury or death.

Stealth Electric Bikes Owner’s Manual
12
CAUTION:
The battery charger for your Stealth Bike can operate on dual voltages (120V/240V). Before
charging the bike for the first time, make sure that the red switch on the back of the charger is set to
the correct mains power supply voltage for your region.
i. Ensure the bike is switched off and the charge port is clean and dry.
ii. Connect the charger to the wall socket. A red and a green light should illuminate.
iii. Now connect the charge plug to the charge socket located on the front LHS of the bike. The charger should then
display 2 red lights, and the charge cycle should commence.
iv. The complete charge period should last approximately 2-2.5 hours. At the end of the charge cycle the charger will
illuminate 1 red and 1 green light. This indicates that the battery is fully charged and the charger can be
disconnected.
NOTE: It is not unusual to see the red and green lights cycle on and off toward the end of the charge period. This indicates
that the battery is balancing and it is best to wait until the cycling has stopped to get the best from your battery pack.
Ensure bike is turned off
Ensure charge port is clean
and dry
A red and green light is
displayed when charger is
disconnected from bike or
battery is fully charged
Connect charger to charge
port
Two red lights are displayed
when battery is charging. You
should also be able to hear
the fan running

Stealth Electric Bikes Owner’s Manual
13
YOUR FIRST RIDE
BATTERY BREAK IN
For the first 2-3 cycles, avoid heavy and sudden acceleration in order to minimize the load placed on the battery cells.
This “break in” will help to prolong the life of the battery pack and at the same time help the cells to operate at their
full potential.
THROTTLE
When the power to the bike is switched on, the throttle (located on
the right hand handle bar as shown) can be used to regulate the
electrical power delivered to the rear wheel. The throttle is a split-
twist grip type and provides an increase in power and speed
proportional to the amount that the grip is twisted.
BRAKES
The brakes are sealed hydraulic units. The standard configuration is the same as found on
modern motorcycles with the front brake actuated by the right hand lever and the rear
actuated by the left hand lever –unless requested.
The position of the brake lever may be adjusted to suit personal riding styles.
1. Loosen the torx screws (circled) on the handlebar clamp.
2. Adjust lever to the desired position.
3. Re-tighten the torx screws on the clamp to 4Nm.
4. Check the lever function by squeezing the lever towards the handlebar and
ensure the brake moves freely to stop the bike. If the brake can be pulled to the
handle bar, the brake needs adjustment or servicing.
CAUTION:
Applying sudden or excessive stopping force with the front wheel brake may cause the rear wheel to
lift off the ground, or the front wheel to slip out from under you.
Know the limitations of your brakes. Learn to use your brakes accordingly for every riding surface.

Stealth Electric Bikes Owner’s Manual
14
REGENERATIVE BRAKING
The regenerative braking switch is a red button located between the
brake lever and the gear selector on the left hand side of the handlebars.
This can be used to slow the bike while riding and will increase the
range of the battery.
Note:
The regen braking button can also be used to cut the power to the
motor in case of emergency.
GEAR SELECTOR
Bomber
For pedalling, the Bomber uses a 9-speed sequential gearbox. To
shift gears, the left hand grip may be twisted forward for a lower
gear (when climbing hills) and rearward for a taller gear (for higher
speeds).
WARNING
The pressure on the pedals must be released when shifting gears. Failure to do so may damage your transmission.
WARNING
Using regen braking on slippery or loose surfaces such as gravel, wet
grass or wooden bridges could cause the rear wheel to lose traction
and loss of control. Using the regen braking system on this type of
surface is not recommended

Stealth Electric Bikes Owner’s Manual
15
Fighter
The Fighter is fitted with a 2-speed internally geared bottom bracket. To
shift gears, kick the button found on the cranks to the right for high range
and to the left for low range.
CYCLE ANALYST
The Cycle Analyst displays important real-time information such as
power consumption, battery level, speed and distance.
It can also be used to limit your maximum speed and maximum
power output.
Refer to the Cycle Analyst manual for detailed instructions of how
to use the Cycle Analyst functions.
How to read your Cycle Analyst (basic version)
After every charge, reset the display by holding down the right button for 3 seconds. The word "Reset" will flash on to
the screen and this will reset the trip statistics from your previous ride.
Assuming that your CA is on the main screen, here's what you need to know.
Once you begin to ride you will see the Watts (W) on the bottom left hand corner of the screen begin to increase. This
is an instantaneous reading of how much power you're using (discharge rate). The more the throttle is turned, the
higher the Watts will be.
WARNING
The pressure on the pedals must be released when shifting gears. Failure to do so may damage your transmission.

Stealth Electric Bikes Owner’s Manual
16
The bottom, right hand side of the screen will alternate between Amp-hours (Ah) and distance (m or km) every few
seconds.
Ah is your battery capacity used. The batteries on the Bomber and the Fighter have an absolute maximum of 18Ah on
a full charge. As you ride, you will see the Ah slowly rise at a speed relative to the Watts that you are using. The higher
the Watts, the faster the Ah will rise. Keep the Watts low, and you will go for longer.
Adding to the above statement, if you ride at higher speeds and discharge the battery quickly, the battery capacity will
shorten a little and you should plan to get home at around 17Ah. If you ride at slower speeds and discharge the
battery at a lower rate, your final capacity will be slightly higher and you will get closer to 18Ah before the battery
goes flat.
It’s best to plan to be home at around 17Ah to avoid having to pedal the last part of your ride.
To summarise,
1. Reset after every charge.
2. Keep the Watts as low as possible.
3. Get home at 17Ah.
Get used to checking the Ah frequently. Learn how your riding style affects the rate the Ah climb and you'll know
when to back off so that you get home the fast way.
For a more comprehensive guide to the functions of the Cycle Analyst, refer to the CA Owner’s Manual at the end of
this document.
Riding efficiently

Stealth Electric Bikes Owner’s Manual
17
RIDING EFFICIENTLY
Both the Stealth Bomber and Stealth Fighter have the versatility to take you to places that you might not usually go.
Being a hybrid, Stealth owners have a lot of flexibility in how they manage their power consumption for any given ride
through different combinations of the pedals and the throttle. On long distance rides, getting home while there’s still a
little charge in the battery is important.
Following a handful of basic guidelines will help you improve your efficiency, extend your range significantly and
make the most of your battery charge cycle.
Interpretation of the display, riding technique, throttle and braking control, stop/starts, terrain and top speed are all
factors that can almost double your range if done properly.
Your display is the most important tool when it comes to maximising efficiency. On the bottom left hand corner
of the main screen is your instantaneous Watt reading. The general idea is to keep the Watts as low as possible at all
times. By twisting the throttle, you should be able to see the Watts climb and then drop away in synch with the level of
acceleration that you feel. By making small adjustments to the throttle position, you should be able to see the Watts
fluctuate.
Pedal more…. Even if only in short bursts. Choose a gear that is in synch with the speed of the bike and stand on
those pedals. Not only will you accelerate faster, you’ll reduce the load on the electrical system and get the workout
that you need.
As most of us know, good technique not only helps us go faster, but also use less energy … especially in the
dirt. Our extensive testing has shown that two riders of equal ability, on the same model of bike, on the same trail,
traveling at the same speeds can differ in their power consumption by up to 10%, based purely on how they ride. Just
like a mountain bike, the secret to using as little energy as possible is to keep it smooth and keep it flowing. Use the
brakes and throttle less, carry your speed and let gravity do as much of the work as possible. (There is limitless
material on the web about riding techniques and body position etc.) Make good use of the gears and get some pedal
strokes in at every opportunity. Short bursts of high intensity pedalling when accelerating out of a corner or climbing
hills can make a significant difference.
Throttle control is vital in improving efficiency. As a basic rule of thumb, the more that you twist the throttle, the
more power you will use. This theory can be backed up by simply watching the display as you change the throttle
position. By suddenly twisting the throttle, power consumption will temporarily spike and over the duration of a long
ride, a heavy right hand will shorten your ride time. Gently rolling the throttle on avoids huge power draw and can
represent that few extra per cent that you need to get you home. When climbing a hill, backing off the throttle slightly
can make a huge difference in to your Watts reading while only making an incremental change to your speed. By
adding some pedal strokes in the correct gear, you should see the Watts drop even further.
A lot of energy is wasted during braking. Judging your speed and approaching corners correctly will help to minimise
the reliance on the hydraulic brakes and allow you to maintain speed out of a corner. This translates to less throttle
and less wasted power as you exit the corner.
Regen braking is your battery’s best friend. Wherever possible, regen should be used. Using the regen on long
downhills and for slowing down in general will recover some of the bikes kinetic energy and feed it back in to your

Stealth Electric Bikes Owner’s Manual
18
battery. In a normal hydraulic braking system this kinetic energy is dissipated as heat via friction and leads to
premature wear of your brake pads. In emergency braking situations however, always use the hydraulic brake
system.
Stop/starts are probably the fastest way to deplete your battery. Power consumption is at its highest when
accelerating off the line. Pedalling while gently rolling the throttle on is definitely the key here. This can certainly be
backed up by watching the Watts on the display climb, peak and then drop off again as the bike picks up speed.
Extreme acceleration is great fun, but it comes at a price….. Range.
Some terrain can really suck your battery dry. When trying to conserve power, try to avoid soft ground, mud,
gravel, steep hills and obstacles. By choosing smooth lines and maintaining your speed, power consumption can be
kept at a minimum.
Speed. With speed comes wind resistance (and a few others). The greater the speed, the greater the resistance.
The greater the resistance, the more power you will consume. Traveling at speeds below 25mph (40km/h) can greatly
influence the duration of your ride. The slower you go, the further you will get.
While there are no set rules on when you should apply any of the above recommendations, we have spent hundreds of
hours testing our bikes and collecting data on these points. They are proven to make a substantial difference to range
and as you become more accustomed you your bike, eventually riding efficiently will become intuitive, which will
allow you to save your battery for the times when you really just can’t help going full throttle.

Stealth Electric Bikes Owner’s Manual
19
ADJUSTING YOUR BIKE
TYRES
Check tyre pressures and ensure that the pressure range is between 25psi and 40psi.
CHAIN
The chain should be checked, adjusted and lubricated as shown on the Maintenance Schedule to ensure proper
operation and prevent excessive wear. If the chain becomes badly worn or is poorly adjusted (i.e., if it is too loose or
too taught), it could damage the drive train or transmission of the bike.
Chain tension should be just enough to remove any slack from the chain but loose enough that pushing moderately on
the middle section of the chain does not cause deflection of more than 10mm (shown below)..Refer to your dealer if
chain needs replacing.
To adjust chain tension:
1. Loosen axle nut on each side of rear wheel.
2. Tighten/loosen 10mm on axle adjuster nuts (circled above) to achieve desired tension.
3. Ensure rear wheel is in-line with bike.
4. Tighten axle nuts.
The chain may be lubricated using any good quality silicone chain lube.
Loosen adjuster nuts
Deflection should be
no more than 10mm

Stealth Electric Bikes Owner’s Manual
20
SUSPENSION
Suspension is a key component of your Stealth Bike. Fork stanchions and preload adjustment should be checked
periodically and adjusted to suit the riders preferred setting. Always follow the manufacturer’s instructions for use
and maintenance.
BOMBER
Rear Shock
Spring preload can be increased or decreased by adjusting the height of the lower spring collets using the C spanners
provided with the bike. The red rebound damping adjuster can be found at the bottom of the shock, and the
compression adjuster can be found on the top of the shock reservoir.
1. Unlock the preload adjustment by loosening the top lock ring on the spring unit using the supplied C spanner.
2. Rotate the spring and collet to increase or decrease the spring tension.
3. Re-lock the preload adjustment by turning the top lock ring clockwise until it locks against the spring retaining
ring.
4. Tighten with C spanner.
5. Increase or decrease the rebound damping by turning the red rebound adjuster dial in the direction required
(as indicated on the bottom of the shock body).
6. Increase or decrease the compression damping by turning the black compression adjuster dial in the direction
required (as indicated on the top of the shock reservoir).
Preload adjustment
Rebound adjustment
Compression adjustment
WARNING
This is a sealed unit and servicing should only be carried out by a qualified suspension repair person.