Shimano's Altus FC-M311 is of a rigid 2-piece construction with Hyperdrive SG-X chainrings for fast and smooth gear shifting performance for off road enthusiasts. The crankset is Dual SIS compatible and comes with a pre-installed chain guard.

Specifications
Chain guard compatible.
Chainwheel, number of teeth: 42x32x22
Fitting for derailleur: 7-speed, 8-speed
Material: aluminum, steel
Type of chain: HG 7/8-speed

Mfr Claimed Weight
TBC