Shimano BB-UN300 Bottom Bracket

The Shimano BB-UN300 is a square tapered bottom bracket designed for replacing worn units. It is available for 68mm and 73mm shell widths and comes in various lengths to suit different bike setups.

Replace your worn square tapered bottom bracket with this Shimano BB-UN300. It fits 68mm and 73mm shells in various lengths, and at just £9.95 it's a great value upgrade for your bike.

Shimano BB-UN300 Bottom Bracket The Shimano BB-UN300 Bottom Bracket is ideal for when you need to replace your worn square tapered bottom bracket. Shimano Disc Brake Mineral Oil 1L. Available for 68mm & 73mm BB shell and in various lengths to suit your setup.