Featuring a rigid 2-piece construction and Hyperdrive SG-X chainrings for fast and smooth gear shifting performance for off road enthusiasts, the Shimano Altus FC-M311 crankset is Dual SIS compatible and comes with a pre-installed chain guard.
. Material: Aluminium, Steel
. Colour: Black
. Crank length: 175mm
. Number of teeth: 48x38x28
. Derailleur fit type: Shimano 3x7/8-speed
. Axle profile: Square
. BB Axle Length: 123mm
. Chain Type: HG 7/8-speed
. Chainline: 50mm