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The square-bottom-bracket-compatible Shimano Altus FC-M311 crankset is comprised of a rigid 2-piece design and Hyperdrive SG-X chainrings. An optional chain guard is included with pre-installation for protection against dirt and debris. It also features Dual SIS compatibility.
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
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