Stabilises the bike during maintenance
Axle length 110mm
Original Shimano part for generations of cranksets requiring a square axle.
Sylvain C.
Mechanical expert
The Shimano BB-UN300 bottom bracket is designed for fitting a road or MTB crankset with a 110mm square taper spindle. Compatible with frames featuring a standard BSA 1.37x24 thread.
- Compatible with BSA 1.37x24
- Axle length: 110mm
- Axle type: square taper
- Shimano part number BB-UN300B10X
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Fast delivery. Very good packaging. Perfectly meets my expectations. (Translated review)
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