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Create an account- SHIMANO quality/performance cartridge bearing square bottom bracket
- Better chainline stability with chain line stabilizer
- Series: Shimano Tourney TX800 Series
- Fits JIS square-taper cranksets
- Available in regular fit or fit for a full enclosed chain case
- Hollow spindle
- Crankarm fixing bolts sold separately
- Adapter material: Aluminum
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Review Shimano UN300 68 x 122.5mm E-Type Bottom Bracket