Praxis has been making high precision, high-performance bottom brackets for years and this is no exception. Praxis provides a clean, smooth and even pedalling experience. This bottom bracket is for installing 30mm spindle cranks into 41mm press-fit (BB86, BB90, BB92) bottom bracket shells.

Style: The bearings are pressed directly into the BB shell. The outer bearing race is also the outer press-fit surface.

Shell Width: BB86 (road), and BB90 and BB92 MTB shells.

Spindle Size (Diameter): 30mm.

Spindle Length:

• Road spindle: 103mm or longer for BB86 road frame shells
• MTB spindle: 108mm or longer for BB90/92 MTB frame shells

Bearing Style: Unique steel cartridge bearing design in which the outer bearing race is also the outer press-fit surface.

Bearing cup material: The large 30mm spindle means that there is no room for bearing cups with a 41mm press-fit BB shell. This design presses the bearings directly into the BB shell with the aid of a retaining compound.

Tools Needed: Bottom bracket bearing press required for installation.

Crank compatibility: Praxis provides 2mm dust covers for each side as a base setup, but every brand has its own specific crank setup. You may need additional spacers depending on your brand of cranks. So please follow your brand's instructions.

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