Our patented elastomer collet design keeps the cartridge bearings outboard of the frame right on spec for greater rigidity and free of frame/c-clip tolerance issues that other systems deal with. Simply press in the longer non-drive cup, then the shorter drive cup threads into it. As the drive cup threads in, our new orange elastomer collet expands outward to a precise machined limit evenly dispersing pressure in your frame shell for a super snug fit.This design is on all of our BB30, PF30 and BBRight bottom brackets.
M30 BB30/PF30 MTN BB - For use with BB30/PF30 MTN 73mm frame