Shimano Altus FC-M311 Crankset - 170mm 7/8-Speed 48/38/28t Riveted Square Taper JIS Spindle Interface BLK Model-PM-180-F 220 Top bungee system for additional

Top bungee system for additional flexible storage

Updated seals and Shimano low viscosity mineral oil offers reliable bite point in all temperatures and trail conditions

Lumen output at high steady: 75

CeramicSpeed Grade 3 Silicon Nitride balls are completely enclosed with a dual sided zero-friction stainless steel dust cover for maximum protection and smooth rotation

Shimano Altus FC-M311 Crankset - 170mm 7/8-Speed 48/38/28t Riveted Square Taper JIS Spindle Interface BLK Model-PM-180-F 220 Top bungee system for additionalShimano Altus FC M311 cranksets feature aluminum crankarms with steel SG X chainrings for smooth and reliable shifting. Hyperdrive integrated SG X steel chainrings provide precise and reliable front shifting Proven 3 pc. design with sturdy aluminum crank arms (bottom bracket sold separately) 50mm Chainline 187. 9mm Q factor Rings 48 38 28 Number of Chainrings Triple Drivetrain Speeds 8 Chainring BCD Riveted Chainline Hub Compatibility 135 142 MTB Hubs