Built for the rigors of Enduro World Series racing, FC-M9220 is the strongest XTR crankset ever produced. HOLLOWTECH II forging and a thicker steel spindle ensure this crank survives the burliest of impacts while optimizing rigidity and weight. Offered in lengths from 160-175mm, there is a specification of FC-M9220 for every enduro rider. FEATURES: Enduro Specific Spindle: A thicker enduro-specific spindle raises the mark for durability and big-hit survivability. HOLLOWTECH II: Shimano’s forging provides optimal weight, stiffness and rigidity for Enduro riding and racing. Q Factor/Chain line: An enduro-optimized Q Factor brings race-feel familiarity, while a 55mm chain line offers maxed-out frame compatibility. Compatibility: M9220 cranks come standard with a 24mm spindle and are compatible with Shimano’s threaded and Press Fit bottom brackets. Chainring sold separately