2022 Carbon Rail 9.8 and 9.9
1
Safety
WARNING
Properly tighten hardware
Always tighten hardware to the specied torque.
Over-tightening hardware could deform or break the
hardware or components. Under-tightening hardware
could cause hardware or components to become loose.
Either situation could damage the bicycle and result in
injury to the rider.
WARNING
Reapply threadlocker
All reused-fasteners with pre-applied threadlocker must
be cleaned with isopropyl alcohol and have new thread-
locker applied before re-assembly. If threadlocker is not
applied, the fasteners may loosen which could damage
the bicycle and result in injury to the rider.
Legend
Apply grease
Do not apply grease
Apply threadlocker
Nm Torque
Hex tool size
Torx tool
Drift size
Zip tie
Contents
2022 Carbon Rail 9.8 and 9.9
12
Specications
Chainline (1x only)
52mm
• Boost hub with offset chainring.
Chainring (1x only)
• 34T only
Rear brake mount
Minimum Maximum
180mm, direct mount Adaptable to 203mm
Maximum tire size
Notice: Measurements of actual tires may vary. Always
verify there is sufcient clearance between the tire and
the frame. Improper tire size could damage the bicycle
frame. Trek recommends 6mm clearance above and on
the sides of the tire.
Wheel set Maximum tire size
29" 29" x 2.6"
27.5" rear with the mino link in
the high position
27.5″ x 2.8″
WARNING
Always follow the seatpost manufacturer’s minimum
insertion recommendation. Failure to follow the recom-
mendation could cause damage to the seatpost and
result in injury to the rider.
1
2
Item Measurement
1 Maximum insertion Frame
S230mm
M
L260mm
XL 310mm
2 Minimum insertion 75mm*
3Seat tube inside diameter 34.9mm
Seat tube post clamp outer diameter 39.5mm
*Follow the seatpost manufacturer’s guidelines.
Kickstand mount
• Requires W581379 and two M6x1.0x25mm bolts
18mm
M6x1.0x25
W581379
Safety Active Braking
Pivot (ABP)
Main pivot and
chainstay
Frame guards Specications
2022 Carbon Rail 9.8 and 9.9
11
Drive system
Drive
1
1
1Mounting bolt — Refer to the Bosch e-bike service
instructions.
Battery charge port cover
1
1
Battery charge port cover — Visit the MY22 Rail
page on trekbikes.com for part numbers.
RIB system
3
15
1
9
12
4
7
7
58
10
11 42
13
14
13
2
6
2.5 3
3
2.5
3
2Nm
5Nm
5Nm
3Nm
5Nm
2Nm
5Nm
T25
T25
14
16
1 Alignment plate — W525805
2Button head screws
— 5257257
4Locknuts
7Button head cap screws
8Countersunk bolts
13 T25 Security screws
11 Washers
3Lower docking bracket
— 5277571
12 Upper docking bracket
5Battery connection plug — Refer to the Bosch e-bike
service instructions.
6Lower battery mounting plug
— 5256256
14 Upper lock cover
15 Bumpers
9Ejector assembly — 579324
10 Lock assembly — W562311
16 Battery cover — Visit the MY22 Rail page on trek-
bikes.com for part numbers.
2022 Carbon Rail 9.8 and 9.9
13
Suspension
The rst step in suspension setup is to determine the sag. All other settings should be adjusted after determining the sag.
Refer to the suspension setup card included with your bike or the suspension calculator at
Trekbikes.com/suspension-calculator.
For recommended rebound settings refer to the suspension calculator at Trekbikes.com/suspension-calculator.
Fork
WARNING
Exceeding the recommended maximum fork length could
damage the bicycle and result in injury to the rider.
Travel
Sag
Axle to Crown
Frame/
Wheel
Size
Axle to Race (mm) Travel
(mm)
Sag
(mm)
S, M, ML,
L, XL, XXL
Recommended 571-576 160 24
Maximum 586 170 25.5
Shock
Mount Width
Bottom mount 54mm
Top mount 40mm
Eye to Eye
Stroke
Sag
Description Dimension
Eye-to-eye length 230mm
Stroke length 57.5mm
Recommended sag
Headset with
Knock Block
Rocker pivot and
seat stay
Shock mounts Drive system Suspension
0.5°
Derailleur hanger Adjust the
geometry
Cable routing
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