Driveline mountain bike crankarms with bottom bracket and chainrings. Integrated spindle and outboard bearing style. Bottom Bracket and Chainrings NOT included. Requires a Shimano style 24mm external bearing bottom bracket. 64/104bcd allows triple, double, and 1x chainring options. Bottom brackets are available to fit most modern bike brands including Trek, Cannondale, BB30, PF30, and more.
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