Shimano BB-UN300 Square Taper bottom bracket for cranks with JIS Square Taper mounting. Suitable for frames with BSA thread 68 mm housing width.
Features
- SHIMANO quality/performance cartridge bearing square bottom bracket
- Better chainline stability with chain line stabilizer
- Standard, E-type, chain case options
- Adapter material: Aluminum
Specification
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Model: BB-UN300
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BB-Type: Square Taper
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Threaded: BSA
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Threaded BB shell width: 68mm
Axle length
Material
