
Shimano BB-UN300 Square Tapered Bottom Bracket
EBBUN300B10X
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Description
The quality and performance-oriented Shimano BB-UN300 cartridge bearing bottom bracket features a JIS square taper mount and is designed for frames with BSA thread and 68/73 mm shell width. A stabilizer ensures a constant chain line.
Features
- Fits JIS square-taper cranksets
- Crankarm fixing bolts sold separately
- Hollow spindle
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Adapter: aluminium (left), aluminium / steel (right)
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Axle: steel
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I bought 68X107 for Miche primato crankset instead of a Miche BB which would have cost 3800. It's working smoothly without any problem.
Way better than my oem BB. Runs smooth and well balanced.
It's very well Ballanced & smooth
Perfect fitment for my bike.
Choose the right size rest you are good to go. Nothing to worry atleast for 5000 Kms