Race Face B18 BB Cupset Cinch

This cupset is designed for frames with a BSA threaded bottom bracket shell. It is specifically compatible with 30mm spindle cranksets, so ensure your crankset matches this diameter before purchasing.

The inner sleeve acts as a protective barrier against water and debris entering from inside your frame. It keeps the 6806 bearings clean and lubricated, which significantly extends the lifespan of the unit in wet or muddy riding conditions.

Yes, you will need a standard BSA30 bottom bracket tool to install these cups. Because the cups are precision-machined, they provide a tight fit, so ensure you have the correct tool interface to avoid damaging the cups during installation.

The unit uses standard 6806 retainer bearings that come pre-packed with high-quality grease. While they are designed for long-term durability, they are standard size, making them easy to replace if they eventually wear out after heavy use.

The main difference is the inclusion of the inner sleeve and the precision-machined cups, which are engineered specifically to handle the demands of 30mm spindles. It prioritizes bearing protection and a tighter tolerance fit compared to generic threaded options.