Shimano BSA square bicycle bottom bracket EBBUN300B22X (EBBUN300B22X)

The Shimano BB-UN300 BSA bottom bracket is designed for precise power transfer in bicycles equipped with a BSA standard bottom bracket shell. The construction of this model ensures high compatibility with a wide range of frames, translating to versatile application and reliability in everyday use.

Precise construction and functionality

The Shimano BB-UN300 BSA features a sealed bottom bracket design that effectively protects the bearings from dirt and moisture. Carefully selected components contribute to the smooth operation of the crank mechanism and minimise rolling resistance during riding. The reliability of its performance is also supported by optimal fit with compatible Shimano crank systems.

Shimano BB-UN300 BSA bottom bracket - features:

• BSA thread standard compatible with most bicycle frames;
• Sealed construction increasing protection of the bearings from contamination;
• Smooth operation of the bottom bracket mechanism due to precise components;
• Versatility for installation on Shimano crank systems;
• Durability and reliability of the mechanical connection between the shell and bottom bracket;
• Optimal fit for road, urban, and trekking bicycles;
• Reduction of play due to the solid construction of the bottom bracket housing;
• Easy installation in a bottom bracket shell with English threads.