SHIMANO Bottom Bracket
The Shimano UN300 Bottom Bracket is a good quality BB for traditional chainsets. Featuring super-accurate bearings for smooth operation and improved durability and a Nylon Body for weight saving, the UN300 allows fast and easy installation without the need for adjustment.
CRANK BOLTS ONLY
If you are not sure on fitting this sealed cartridge please ask a qualified cycle mechanic as it can damaged your bottom bracket thread, and the sealed cartridge thread if installed incorrectly
Please note Crank Bolts are not included unless you add the crank bolts to the order.
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