Built for the rigors of Enduro World Series racing, the Shimano XTR 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 160-175 mm and with all sizes of the reinforced SM-CR96 direct-mount chain ring, there is a specification of FC-M9220 for every Enduro rider.Main 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 55 mm chain line offers maxed-out frame compatibility.Compatibility: M9220 cranks come standard with a 24 mm spindle and are compatible with Shimano's threaded and Press Fit bottom brackets.Features:Model: FC-M9220.Series: Shimano XTR M9200.Weight: --- g.Speed: 12S.Compatible chain: HG 12S.Chain line: 55 mm.BCD: Direct Mount.Chainring sold separately.Q-factor: 176 mm.Recommended bottom bracket (Threaded): Shimano SM-BB93.Recommended bottom bracket (Press-Fit): Shimano SM-BB94-41A.Bottom bracket sold separately.References:IFCM9220AMXX: Shimano XTR FC-M9220 Crankset (Without Chainring), 12-speed, 176 mm Q-Factor, 55 mm Chain Line, 160 mm Crank Arm Length.IFCM9220AAXX: Shimano XTR FC-M9220 Crankset (Without Chainring), 12-speed, 176 mm Q-Factor, 55 mm Chain Line, 165 mm Crank Arm Length.IFCM9220ACXX: Shimano XTR FC-M9220 Crankset (Without Chainring), 12-speed, 176 mm Q-Factor, 55 mm Chain Line, 170 mm Crank Arm Length.IFCM9220AEXX: Shimano XTR FC-M9220 Crankset (Without Chainring), 12-speed, 176 mm Q-Factor, 55 mm Chain Line, 175 mm Crank Arm Length.