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Torque specs
Brake caliper bolt specs

Recommended Torque Specs

Below are our general recommendations for torque specs. Please note:

  1. For torque specs involving other parts, always verify the maximum torque specs from the respective PARTS manufacturer.
  2. Never exceed the lowest of the manufacturer-recommended and the OPEN-recommended maximum torque spec
  3. All bolts should be greased prior to assembly.
  4. Always use a torque wrench!!
Seatpost collar WI.DE./U.P./U.P.P.E.R./ONE+
Seatpost collar WI.DE./U.P./U.P.P.E.R./ONE+
5 Nm

Always use carbon compound on seatpost & grease on collar bolt

Seatpost wedge clamp U.P.PER. 2.0 (UDH-compatible)
Seatpost wedge clamp U.P.PER. 2.0 (UDH-compatible)
5 Nm
MIN.D. Seattube top clamp set-screws
MIN.D. Seattube top clamp set-screws
3 Nm
Water bottle cage onto frame
Water bottle cage onto frame
2 Nm
Front derailleur mount onto frame
Front derailleur mount onto frame
3 Nm
Rear derailleur hanger onto frame (U.P./U.P.P.E.R./WI.DE./MIN.D.)
Rear derailleur hanger onto frame (U.P./U.P.P.E.R./WI.DE./MIN.D.)
10 Nm
UDH derailleur hanger onto frame (U.P.PER. 2.0)
UDH derailleur hanger onto frame (U.P.PER. 2.0)
25 Nm

Note: If you install a SRAM Transmission rear derailleur instead of a UDH hanger, the torque setting will be different - see the derailleur for the correct setting

Multistop M2.5x5 screw
Multistop M2.5x5 screw
Hand-tight
Standard stem (28.6mm) clamp onto fork
Standard stem (28.6mm) clamp onto fork
4Nm
(never exceed the recommended torque set by the handlebar/stem maker)
Standard stem clamp on carbon handlebar (31.8mm)
Standard stem clamp on carbon handlebar (31.8mm)
5Nm
(never exceed the recommended torque set by the handlebar/stem maker)
Shift & brake levers onto handlebar
Shift & brake levers onto handlebar
5Nm
Headset top cap onto steerer
Headset top cap onto steerer
Balance smooth steering with eliminating headset play


Brake caliper bolt lengths U.P./U.P.P.E.R.

Front brake bolts SRAM
Front brake bolts SRAM
37mm “REAR” brake bolts for 30mm “chainstay”
SRAM part# 00.5318.005.008
Front brake bolts Shimano 11-speed (excl. GRX)
Front brake bolts Shimano 11-speed (excl. GRX)
43mm “REAR” brake bolts for 30mm “chainstay” 

Shimano part# Y8N208030

Front brake bolts Shimano 12-speed (and 11-speed GRX)
Front brake bolts Shimano 12-speed (and 11-speed GRX)
1x Shimano caliper bolt C - 43 mm 
Shimano part# Y8PU08030

1x Shimano caliper bolt C2 - 39mm 

Shimano part# Y2HW08030

Front brake set-up Campagnolo
Front brake set-up Campagnolo
“140mm” (rear) caliper + 160mm rotor, no adaptors, 2x 39mm "screws for 30-34 mm rear mount thickness” 
Campagnolo part# AC18-DBSC39
Rear brake bolts SRAM
Rear brake bolts SRAM
2x 27mm (160mm disc requires adaptor)
SRAM part# 00.5318.005.004
Rear brake bolts Shimano 11-speed (excl. GRX)
Rear brake bolts Shimano 11-speed (excl. GRX)
2x 33mm (160mm disc requires adaptor)
Shimano part# Y8N208010
Rear brake bolts Shimano 12-speed (and 11-speed GRX)
Rear brake bolts Shimano 12-speed (and 11-speed GRX)
1x Shimano caliper bolt C - 33 mm  

Shimano part# Y8PU08010 


1x Shimano caliper bolt C2 - 29mm  

Shimano part# Y2HW08010


(140mm discs fit without any adaptor on the caliper, 160mm disc requires caliper adaptor) 
Rear brake set-up Campagnolo
Rear brake set-up Campagnolo
“140mm” (rear) caliper + 140mm rotor (no adaptor) 
OR 
160mm rotor + rear adaptor
AND
2x 29mm “screw for 20-24 mm rear mount thickness” 
Part# AC18-DBSC29

Brake caliper bolt lengths U.P.PER. 2.0 (UDH-compatible)

Front brake bolts SRAM
Front brake bolts SRAM
2x 42mm "REAR” brake bolts for 35mm “chainstay”
SRAM part# 00.5318.005.010
Front brake bolts Shimano 11-speed (excl. GRX)
Front brake bolts Shimano 11-speed (excl. GRX)
2x 48mm “REAR” brake bolts for 35mm “chainstay”

Shimano part# Y8N208040

Front brake bolts Shimano 12-speed (and 11-speed GRX)
Front brake bolts Shimano 12-speed (and 11-speed GRX)
1x Shimano caliper bolt C - 48 mm  

Shimano part# Y8N208040 


1x Shimano caliper bolt C2 - 44mm  

Shimano part# Y2J708040

Front brake set-up Campagnolo
Front brake set-up Campagnolo
“140mm” (rear) caliper + 160mm rotor, no adaptors, 2x 44mm "screws for 35-39 mm rear mount thickness” 
Campagnolo part# AC18-DBSC44
Rear brake bolts SRAM
Rear brake bolts SRAM
2x37mm

SRAM part# 00.5318.005.008

Rear brake bolts Shimano 11-speed (excl. GRX)
Rear brake bolts Shimano 11-speed (excl. GRX)
2x Shimano caliper bolt C - 43mm 

Part# Y8PU08030

Rear brake bolts Shimano 12-speed (and 11-speed GRX)
Rear brake bolts Shimano 12-speed (and 11-speed GRX)
1x Shimano caliper bolt C - 43 mm  

Shimano part# Y8PU08030 


1x Shimano caliper bolt C2 - 39mm  

Shimano part# Y2HW08030

Rear brake set-up Campagnolo
Rear brake set-up Campagnolo
“140mm” (rear) caliper +160mm rotor, no adaptors, 2x 39mm “screw for 30-34mm rear mount thickness

Part# AC18-DBSC39

Brake caliper bolt lengths WI.DE.

Front brake bolts SRAM
Front brake bolts SRAM
2x 37mm "REAR” brake bolts for 30mm “chainstay”
SRAM part# 00.5318.005.008
Front brake bolts Shimano 11-speed (excl. GRX)
Front brake bolts Shimano 11-speed (excl. GRX)
2x 43mm “REAR” brake bolts for 30mm “chainstay”

Shimano part# Y8N208030

Front brake bolts Shimano 12-speed (and 11-speed GRX)
Front brake bolts Shimano 12-speed (and 11-speed GRX)
1x Shimano caliper bolt C - 43 mm  

Shimano part# Y8PU08030 


1x Shimano caliper bolt C2 - 39mm  

Shimano part# Y2HW08030

Front brake set-up Campagnolo
Front brake set-up Campagnolo
“140mm” (rear) caliper + 160mm rotor, no adaptors, 2x 39mm "screws for 30-34 mm rear mount thickness” 
Campagnolo part# AC18-DBSC39
Rear brake bolts SRAM
Rear brake bolts SRAM
1x 27mm & 1x 32mm

SRAM part# 00.5318.005.004 & SRAM part# 00.5318.005.006

Rear brake bolts Shimano 11-speed (excl. GRX)
Rear brake bolts Shimano 11-speed (excl. GRX)
1x 33mm & 1x 38mm

Part# Y8N208010 & Part# Y8N208020

Rear brake bolts Shimano 12-speed (and 11-speed GRX)
Rear brake bolts Shimano 12-speed (and 11-speed GRX)
1x Shimano caliper bolt C - 38 mm  (this is the bolt closest to the rear axle) 

Shimano part# Y8PU08020 


1x Shimano caliper bolt C2 - 29mm  (this is the bolt closest to the BB)

Shimano part# Y2HW08010

Rear brake set-up Campagnolo
Rear brake set-up Campagnolo
“140mm” (rear) caliper +160mm rotor, no adaptors, 1x 29mm “screw for 20-24 mm rear mount thickness” &  1x 34mm “screws for 25-29 mm rear mount thickness"

Part# AC18-DBSC29 & Part# AC18-DBSC34

Brake caliper bolt lengths MIN.D.

Front brake bolts SRAM
Front brake bolts SRAM
2x 37mm "REAR” brake bolts for 30mm “chainstay”
SRAM part# 00.5318.005.008
Front brake bolts Shimano 11-speed
Front brake bolts Shimano 11-speed
2x 43mm “REAR” brake bolts for 30mm “chainstay”

Shimano part# Y8N208030

Front brake bolts Shimano 12-speed
Front brake bolts Shimano 12-speed
1x Shimano caliper bolt C - 43 mm   

Shimano part# Y8PU08030   


1x Shimano caliper bolt C2 - 39mm   

Shimano part# Y2HW08030

Front brake set-up Campagnolo
Front brake set-up Campagnolo
“140mm” (rear) caliper + 160mm rotor, no adaptors, 2x 39mm "screws for 30-34 mm rear mount thickness” 
Campagnolo part# AC18-DBSC39
Rear brake bolts SRAM
Rear brake bolts SRAM
1x 27mm & 1x 32mm

SRAM part# 00.5318.005.004 & SRAM part# 00.5318.005.006

Rear brake bolts Shimano 11-speed
Rear brake bolts Shimano 11-speed
1x 33mm & 1x 38mm

Part# Y8N208010 & Part# Y8N208020

Rear brake bolts Shimano 12-speed
Rear brake bolts Shimano 12-speed
1x Shimano caliper bolt C - 38 mm  (this is the bolt closest to the rear axle)  

Shimano part# Y8PU08020   


1x Shimano caliper bolt C2 - 29mm  (this is the bolt closest to the BB) 

Shimano part# Y2HW08010

Rear brake set-up Campagnolo
Rear brake set-up Campagnolo
“140mm” (rear) caliper +160mm rotor, no adaptors, 1x 29mm “screw for 20-24 mm rear mount thickness” &  1x 34mm “screws for 25-29 mm rear mount thickness"

Part# AC18-DBSC29 & Part# AC18-DBSC34

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