Highquality and extra durable BB30, PF30 and Specialized OSBB (68x42mm case measurements) ceramic bottom bracket with 68 mm width for 28/30 mm M30 spindle.
Expanding R-Collet: After installation of the bottom bracket the rubber will try to expand again and puts pressure towards the bottom bracket cups. This orange expanding rubber collet holds the unit snug and silent in your frame.
Not: Compatible with M30 road-cranks only! For installation, the practice works M30BB tool is needed.
Material: Aluminium ||| Ceramic