The bottom bracket axle is steadily supported by the wide placed bearings on the basis of HOLLOWTECH II technologies providing highly-efficient power transfer.
With smoot rotation and better sealing performance, the SHIMANO XTR bottom bracket is durable for mountain bike usage. It is available in threaded and press-fit options.
With smoot rotation and better sealing performance, the SHIMANO XTR bottom bracket is durable for mountain bike usage. It is available in threaded and press-fit options.
FEATURE
・Lightweight to offset weight disadvantage of drivetrain
・-19.3g (SM-BB93 vs. SM-BB90A)
・-18.5g (SM-BB94-41A vs. SM-BB91-41A)
・Smoother rotation
・Better sealing performance
・Durable enough for mountain bike usage
・Fits various frame designs
・SM-BB93 for threaded bottom bracket
・SM-BB94-41A for press-fit bottom bracket
・Weight: 73g (SM-BB93) 58g (SM-BB94-41A)