Shimano XT SM-BB70 external bearing bottom bracket is ready for demanding use on trails and provides a stiff, smooth-spinning platform for your Hollotech II cranks.
- Applicable Front Chainwheel: Shimano Hollowtech II LX, SLX, XT, Hone series.
- Thread: BSA 1.37 x 24 TPI
- Material: steel/aluminium
- Case width: 68 / 70mm
- Bracket, length of axle: Hollowtech II
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