GT Grade Carbon 2020 Configuration guide

2020
Grade Carbon
READ THIS SUPPLEMENT AND YOUR
GT BICYCLE OWNER’S MANUAL.Both
contain important safety information. Keep
both for future reference.
Owner’s Manual Supplement

English2020 Grade Carbon - Owners’ Manual Supplement
Safety Messages
In this supplement, particularly important information
is presented in the following ways:
Indicates a hazardous situation which,
if not avoided, may result in death or
serious injury.
NOTICE
Indicates special precautions that
must be taken to avoid damage.
The following symbols are used in this manual:
Symbol Name Description
NGLI-2
NGLI-2 synthetic grease Apply NGLI-2 synthetic grease.
CRB-GEL
Carbon gel Apply carbon gel (friction paste) KF115/
2
Medium-strength
removable thread lock Apply Loctite® 242 (blue) or equivalent.

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CONTENTS
Safety Information.................................. 1-5
Technical Information....................... 6-15
Replacement Parts..................................16
GT Supplements
This manual is a “supplement” to your GT
Bicycle Owner’s Manual.
This supplement provides additional
and important model specic safety,
maintenance, and technical information.
It may be one of several important
manuals/supplements for your bike;
obtain and read all of them.
Please contact your Authorized GT
Dealer immediately if you need a manual
or supplement, or have a question about
your bike. You may also contact us using
the appropriate country/region/location
information.
You can download Adobe Acrobat PDF
versions of any manual/supplement from
our website:
www.gtbicycles.com
Contacting GT
GT USA
Cycling Sports Group, Inc.
1 Cannondale Way,
Wilton CT, 06897, USA
1-800-726-BIKE (2453)
Cycling Sports Group Europe B.V
Mail: Postbus 5100
Visits: Hanzepoort 27
7575 DB, Oldenzaal, Netherlands
International Distributors
Consult the following websIte to identify
the appropriate GT Dealer for your
region.
www.gtbicycles.com/usa_en/
international-distributors/
Your GT Dealer
To make sure your bike is serviced and
maintained correctly, and that you
protect applicable warranties, please
coordinate all service and maintenance
through your Authorized GT Dealer.
NOTICE
Unauthorized service, maintenance,
or repair parts can result in serious
damage and void your warranty.

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SAFETY INFORMATION
Important Composites
Message
Your bike (frame and components) is
made from composite materials also
known as “carbon ber.”
All riders must understand a
fundamental reality of composites.
Composite materials constructed of
carbon bers are strong and light, but
when crashed or overloaded, carbon
bers do not bend, they break.
For your safety, as you own and use
the bike, you must follow proper
service, maintenance, and inspection
of all the composites (frame, stem,
fork, handlebar, seat post, etc.) Ask
your GT Dealer for help.
We urge you to read PART II, Section
D. “Inspect For Safety” in your GT
Bicycle Owner’s Manual BEFORE you
ride.
You can be severely injured, paralyzed
or killed in an accident if you ignore
this warning.
Inspection & Crash
Damage Of Carbon
Frames/Forks
After A Crash Or Impact:
Inspect frame carefully for damage
(See PART II, Section D. Inspect For
Safety in your
GT Bicycle Owner’s Manual. )
Do not ride your bike if you see any
sign of damage, such as broken,
splintered, or delaminated carbon
ber.
Any of the following may indicate a
delamination or damage:
· An unusual or strange feel to the
frame
· Carbon which has a soft feel or
altered shape
· Creaking or other unexplained
noises,
· Visible cracks, a white or milky
color present in carbon ber
section
Continuing to ride a damaged frame
increases the chances of frame failure,
with the possibility of injury or death
of the rider.

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Servicing
This supplement may include
procedures beyond the scope of
general mechanical aptitude.
Special tools, skills, and
knowledge may be required.
Improper mechanical work
increases the risk of an accident.
Any bicycle accident has risk of
serious injury, paralysis or death.
To minimize risk we strongly
recommend that owners always
have mechanical work done by
an Authorized GT Dealer.
Disc Brakes on Road
Bikes
Relative to conventional rim brakes,
disc brakes are less affected by water,
do not wear or heat the rims and
therefore are more consistent. Disc
brakes also may be more powerful.
To minimize risk of injury or accidents:
· Understand that road bikes have a
relatively small tire contact patch
(part of the tire that touches the
road). In order to apply the brakes
safely and effectively, you may
need more or less braking force in
different situations. You need to
take into account various road and
weather conditions that can affect
traction.
· Disc brakes are excellent, but
not some kind of magic. Take
some time riding your new disc
brake road bike in lower risk
circumstances to get used to the
feel and performance of the disc
brakes and tires.
You can be severely injured, paralyzed
or killed in an accident if you ignore
this message.
Intended Use
ASTM F2043
For o-road
riding and
jumps less than
12” (30cm)
The intended use of
all models is ASTM
CONDITION 2,
General Purpose
Riding.
Please read your GT Bicycle Owner’s
Manual for more information about
Intended Use and Conditions 1-5.

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Trainers
If you ride a trainer that requires removal
of the front wheel and clamps the fork
dropouts: Be sure your fork quick release
is tight! Relative movement will wear
parts, weaken and damage your bike.
If you ride a trainer that holds the
bike up by clamping the rear quick
release between two cones: Take off
the lightweight quick release that
came with your bike. Substitute a heavy,
classic all steel quick release and clamp
it tight! Relative movement will wear
parts, weaken and damage your bike.
Note that many modern quick releases
will not t the clamping cones in this
kind of trainer because their shapes are
incompatible.
For thru axles, make sure you follow the
trainer manufacturer instructions for the
use of any required adapters.
Be particularly cautious with a carbon
frame or fork. Carbon is relatively soft,
not abrasion resistant. If there is any
relative movement, carbon will wear
quickly.
If you ride a trainer a lot, consider using
an old bike: Corrosion from sweat will
take its toll. Weight is irrelevant. Save
wear on your expensive components.
Ask you dealer for help with trainers, the
right one and the correct way to use it.
NOTICE
TRAINERS - Improperly mounting a
bike in a trainer, or using one that is
not compatible with your particular
bike frame can cause serious damage.
WATER BOTTLES - An impact, crash,
or loose bottle cage can result in
damage to your frame.
This kind of damage is not covered by
the GT Limited Warranty.
Water Bottles
Side impacts to a water bottle or cage
can result in damage to threaded
inserts due to the leverage on a very
small area. In a crash, certainly the
last thing you should be worried about
is saving the threaded inserts in your
frame. However, when you are storing
or transporting your bike, take steps to
prevent situations where a water bottle
may be hit or bumped by a strong force
that would cause damage. Remove
bottle and cage when you are packing
your bike for travel.
Periodically check the attachment of
the bottle cage; tighten the cage bolts if
necessary. Don’t ride with a loose bottle
cage. Riding with loose cage bolts can
produce a rocking motion or vibration
of the attached cage. A loose cage will
damage the insert and possibly lead to
the inserts to pull out.
It may be possible to repair a loose insert,
or install another insert only if the frame
is undamaged. Replacement requires
the use of a special tool. If you notice
damage to the threaded insert, please
ask your GT Dealer for help.

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Building Up A Frame Set
Before building up a frame set, consult
with your GT Dealer and the component
manufacturers, and discuss your riding
style, ability, weight, and interest in and
patience for maintenance.
Make sure the components chosen are
compatible with your bike and intended
for your weight and riding style.
Generally speaking, lighter weight
components have shorter lives. In
selecting lightweight components, you
are making a trade-off, favoring the
higher performance that comes with
less weight over longevity. If you choose
more lightweight components, you must
inspect them more frequently. If you are
a heavier rider or have a rough, abusive
or “go for it” riding style, buy heavy duty
components.
Read and follow the component
manufacturers warnings and
instructions.
Tightening Torques
Correct tightening torque for the
fasteners (bolts, screws, nuts) on
your bicycle is very important to your
safety. Correct tightening torque for
the fasteners is also important for the
durability and performance of your
bicycle. We urge you to have your dealer
correctly torque all fasteners using a
torque wrench. If you decide to torque
fasteners yourself always use a torque
wrench.
Find Tightening Torque Information :
The wide range of bicycle models
and components used means that
a listing of tightening torque would
be out of date by the time it was
published. Many fasteners should
be installed with a thread locking
adhesive such as Loctite®®.
To determine correct tightening
torque and any adhesive application
for a fastener we ask you to check:
· Many components are marked.
On-product marking is becoming
common.
· Torque specs in the component
manufacturers instructions
shipped with your bicycle.
· Torque specs listed on the
websites of component
manufacturers.
· With your dealer. Dealers have
access to current data and have
experience with correct torque for
most fasteners.

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TECHNICAL INFORMATION
Item Specification
Head Tube UPR: 1-1/8 in, LWR: 1-1/4 in
Headset FSA No.44E, UPR: 1-1/8 in, LWR: 1-1/4 in
Bottom Bracket: Type / Width PF30 (sleeved) / 68 mm
Front Derailleur Brazed-on
Seat Post: Dia./Binder 27.2 mm / 31.8 mm
Min. Seat Post Insert 65 mm
Max. Seat Post Insert See page 15.
Tire Size x Max. Width 700c x 40 mm (measured)
Brakes: Mount Type / Min/Max Rotor Dia. RR: Flat Mount / 160 mm / 180 mm Only,
FR: Flat Mount / 160 mm / 180 mm Only
Axles: Type/Length FR: Maxle TA / 100 x 12 mm
RR: Syntace TA / 142 x 12 mm, M12x1, Single Lead
Intended Use: ASTM Condition 2, General Purpose Riding
Max. Weight Limit: Total 285 lbs / 129 kg (rider + all equipment)
Frame Specification
Bottom Bracket Cable Guide
2
4 N·m
M5
2
4 N·m
M5
4 mm
5 mm
mech
or Di2
Di2
3
4
5
1
2
a
1. BB Guide
2. Screw (2X)
3. DT Clamp (3X)
4. Clamp Bolt (3X)
5. Clamp Pad
a. Drain hole
Identification

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G
M
P
J
I
N
75.0
K
L
E
F
C
D
G
O
KM
H
B
P
E
J I
L
F
A
Size 48 51 55 58 62
A 45.7/18.0 49.4/19.4 53.1/20.9 56.8/22.4 60.5/23.8
B 54.5/21.5 55.9/22.0 57.4/22.6 58.7/23.1 60.2/23.7
C52.3/20.6 53.8/21.2 55.5/21.9 57.1/22.5 58.8/23.1
D70.5° *72.0° 72.3° *
E73.0° ****
E’ 73.0° ****
F72.2/28.4 75.7/29.8 78.9/31.1 82.5/32.5 85.7/33.7
G 11.9/4.7 14.5/5.7 16.2/6.4 18.7/7.4 21.0/8.3
H 102.7/40.4 104.3/41.1 104.3/41.1 105.5/41.5 107.0/42.1
I 60.8/23.9 62.3/24.5 62.4/24.6 63.4/25.0 65.0/25.6
J 43.0/16.9 * * * *
K 7.5/3.0 7.3/2.9 * 7.0/2.8 *
L 28.3/11.1 28.5/11.2 * 28.8/11.3 28.7/11.3
M** 5.5/2.2 * * * *
N** 6.8/2.7 * 5.8/2.3 5.6/2.2 5.6/2.2
O 54.7/21.5 56.9/22.4 59.1/23.3 61.3/24.2 63.5/25.0
P 37.8/14.9 38.5/15.2 39.3/15.5 39.9/15.7 40.8/16.1
* Indicates same.
** Flip Chip UN-LOADED shown, Flipping to “LOADED” position increases rake by 1.5 cm & decreases trail by 1.5 cm.
See page 10.
A Seat Tube Length
B Top Tube Horizontal
C Top Tube Actual
D Head Tube Angle
E Seat Tube Angle
(effective)
E’ Seat Tube Angle
(actual)
F Standover
G Head Tube Length
H Wheelbase
I Front Center
J Chain Stay Length
K Bottom Bracket Drop
L Bottom Bracket Height
M Fork Rake
N Trail
O Stack
PReach
Geometry
Dimensions = centimeter/inches
All Specications subject to change without notice.

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2 N·m
2
NGLI-2
1
a
1
3
5
4
4 N·m
2
2
6
1
To replace:
Remove the rear axle.
Remove the mounting screw(s) and remove
the old hanger from the dropout. Clean the
area around the dropout and inspect the
frame carefully for any cracks or damage. If
you nd damage have the frame inspected by
your GT Dealer .
If the dropout is un-damaged, apply a light
lm of grease between the frame and mount.
This will help minimize any noise or “creaking”
that might result from very slight movement
between the dropout and hanger during
movement of the derailleur.
Slide the new hanger onto the dropout. Apply
Loctite® 242 (or medium strength thread
lock) to the screw threads and tighten to the
specied torque.
Rear Derailleur Mount Front Derailleur Mount
1. RD Mount
2. Screw
a. Di2 cable exit 1. FD Mount
2. Screws (2X)
3. FD Cable Boot
4. Di2 Cap
5. Plugs for 1x
(single chain ring)
6. Di2 FD Cable Port
Serial Number
The serial number is located on the bottom
bracket. It is a 7-character barcode (1). Use
this serial number to register your bike.
To register your bike: go to the
Product Registration section of
our website at:
www.gtbicycles.com