R-SPEC eBike Crankset

Sierra Bicycle Supply Verified independent store

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Meet the 5DEV R-Spec E-Bike Crankset — tuned for modern light and trail e-MTBs. Built brutally stiff, deceptively light, and smarter by design, it delivers lively acceleration with the durability to ride hard, day after day. Precision-CNC’d from 7075 aluminum for elite stiffness-to-weight, the R-Spec eBike crank uses an optimized cutout design to put material where it matters and remove it where it doesn’t. The result is a crisp, responsive pedal feel that holds firm under assist torque without dragging you down with extra grams. IS Spline Drive interface designed for use with Bosch, TQ, and new 2025 Specialized LEVO eBike motors Steel crank bolt 8mm Hex and billet aluminum self-extractor 16mm hex Show more