Praxis M30 BB86/90/92 Bottom Bracket

The Praxis M30 BB86/90/92 Bottom Bracket is a press-fit bottom bracket designed to work across the BB86, BB90, and BB92 shell standards — making it a practical solution for carbon frames that use these common formats. Built around Praxis's M30 spindle compatibility, it accepts the oversized 30mm crankarms found across most modern Praxis, as well as many third-party cranksets built to the same interface. Press-fit bottom brackets can be a source of frustration when tolerances are off, but Praxis has long focused on bearing quality and precise fitment as the foundation of their drivetrain components. The M30 bottom bracket is designed to deliver smooth, consistent rotation while remaining serviceable — so when the time comes, you're replacing bearings rather than starting over. Praxis M30 BB86/90/92 Bottom Bracket Specs at a Glance Shell compatibility: BB86, BB90, BB92 Spindle interface: M30 (30mm) Installation type: Press-fit Intended use: Road and gravel drivetrains