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Fastener Torque Specifi cations
Appendix C
Fastener Torque Specifi cations
Correct tightening torque of threaded fasteners is very important to your safety. Always
tighten fasteners to the correct torque. Bolts that are too tight can stretch and deform.
Bolts that are too loose can move and fatigue. Either mistake can lead to a sudden
failure of the bolt.
Always use a correctly calibrated torque wrench to tighten critical fasteners on your
bike. Carefully follow the torque wrench manufacturer’s instructions on the correct way
to set and use the torque wrench for accurate results.
In case of a confl ict between the instructions in this manual and information provided
by a component manufacturer, consult with your dealer or the manufacturer’s customer
service representative for clarifi cation.
RECOMMENDED TORQUE VALUE
COMPONENT
IN–LB
NM
Headset, Handlebar, Seat area
Seat fi xing bolt (seat rail binder)
174–347
19.7–39.2
Stem handlebar binder bolts (2)
174–260
19.7–29.4
Stem wedge (binder) bolt – quill type for
threaded headset
174–260
19.7–29.4
Threaded headset locknut
130–150
14.7–16.9
Threadless stem clamp bolts
120–144
13.6–16.3
Crankset, Bottom Bracket, Pedal area
Chainring bolt (aluminum)
44–88
5.0–9.9
Chainring bolt (steel)
70–95
7.9–10.7
Crank bolts
305–391
34.5–44.2
Pedal (into crank)
307–350
34.7–39.5
Derailleur, Shift lever area
Front derailleur cable pinch
44–60
5.0–6.8
