The Enduro XD-15 is the best bottom bracket in the world. It's the only bottom bracket completely manufactured and assembled in the US.
Each bearing for the XD-15 is made from nitrogen steel milled from the south of France. This steel uses nitrogen instead of carbon as most steels use. The nitrogen allows for a more homogeneous grain structure. This more consistent grain structure makes the races smoother and longer wearing. As nitrogen steel is inherently stainless, it also offers the highest level of corrosion protection. The nitrogen steel we use in the XD-15 bottom bracket is used in jet turbines of Airbus aircraft. Airbus chose XD-15 as it could handle extremely high loads with minimal friction and also be able to withstand the corrosive de-icing fluid used.
Our BB90 bottom bracket kit contains two, high-quality Enduro Bearings and two seals needed for installation. This kit fits all road and mountain bike frames with a BB90 bottom bracket shell. The BB90 version is Shimano, Mega EXO and SRAM GXP compatible.