Shimano Altus FC-M315-2 crankset

The Shimano FC-M315-2 mountain bike crank delivers precise and reliable shifting for 2x7 and 2x8-speed drivetrains.

Features:

- Precise and reliable shifting
- SG-X chainrings
- Consistent off-road front shifting

Specifications:

- Rear speeds: 8/7
- Compatible chain: HG 8/7/6-speed
- Chain line (mm): 48.8

O.L.D.
- Thru (mm): 142
- QR/Nut (mm): 135
- P.C.D. (mm): Riveted
- Spider/gear arms: 4
- Chainring combination: 36-22T
- Q-factor (mm): 179.4

Crank arm length (mm)
- 170: Yes
- 175: Yes

Optional chain guard
- Without chain/bash guard: Yes

Compatible bottom bracket type
- Square: Yes

Recommended bottom bracket
- Threaded (normal): BB-UN101

Axle length of BB-UN/ES (mm)
- Threaded (normal): LL123

Threaded bottom bracket shell width (mm)
- 68: Yes
- 73: Yes
- Crank fixing screw included: Yes

Technology:

Hyperdrive System:
- Integrated design of SG-X chainrings,
- Wide Link front derailleur and HG chain
- Components work together to improve chain control to provide precise and reliable front derailleur shifting that is especially beneficial in severe off-road riding conditions.
- Wide link front derailleur contributes higher rigidity for precise shifting operation.