The tightening torques for a Shimano GRX gravel groupset (RX810), by component — every value sourced. GRX uses standard Shimano fittings, so these are the documented torques each part is built to.
Tightening torques for a Shimano GRX gravel groupset (RX810 tier), by component. GRX uses standard Shimano fittings — a Hollowtech II crankset, HG cassette, flat-mount disc calipers and Center Lock rotors — so these are the documented Shimano torques each part is built to, sourced and linked. Handy when you box and rebuild a gravel bike for a trip. Confirm against the current GRX dealer's manual for your exact model.
| Component | Attribute | Value | Src |
|---|---|---|---|
| Crankset (FC-RX810) Hollowtech II 2-piece |
Left crank arm pinch bolts (×2) | 12.0–13.8 N·m | [1] |
| Crankset (FC-RX810) Hollowtech II |
Pre-load / adjusting cap | 0.5–0.7 N·m | [2] |
| Bottom bracket cups Hollowtech II external |
External BB cups into frame | 34.5–49.1 N·m | [2] |
| Cassette (CS-HG700) HG freehub lockring |
Sprocket lock ring | 35–50 N·m | [2] |
| Front derailleur (FD-RX810) Shimano band-clamp road/gravel FD |
Clamp / mounting bolt | 5.0–6.8 N·m | [1] |
| Rear derailleur (RD-RX810 / RX812) Shimano road/gravel RD hanger bolt |
Mounting / bracket bolt | 8–10 N·m | [2] |
| Rear derailleur (RD-RX810 / RX812) Shimano cable anchor |
Cable fixing bolt | 5.9–7.8 N·m | [1] |
| Dual-control lever (ST-RX810) Shimano STI |
Handlebar clamp bolt | 6–8 N·m | [2] |
| Disc brake caliper (BR-RX810) Shimano road/gravel disc caliper |
Caliper mounting bolt (flat-mount) | 6.0–7.8 N·m | [1] |
| Disc rotor (SM-RT70) Shimano Center Lock |
Center Lock lock ring | 39.5 N·m (Shimano spec ≈ 40) Shimano's published figure is 40 N·m; the UBI chart lists 39.5. |
[1] |
| Pedals 9/16" pedal thread |
Pedal into crank arm | 35 N·m (minimum) minimum |
[2] |
GRX is the groupset most gravel-trip bikes run — these are the torques for re-tightening the crank, cassette and calipers after you rebuild a boxed bike at the other end. See our cycling holidays for bike-transport tips.