Enduro XD-15 Ceramic Road Bottom Bracket

The Enduro XD-15 is the best bottom bracket in the world. Okay, that is a bold claim but in this case , it is positively true. The XD-15 bottom bracket is the only bottom bracket completely manufactured and assembled in the US.

The bearings for the XD-15 are 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.

We could have stopped their but decided to go even further with the XD-15 bottom bracket design. We chose to make the bearings angular contact. Traditional bottom brackets use radial bearings. Unfortunately, radial bearings have a hard time dealing with lateral loads that come with using external BB cranks. The newer crank designs can put unwanted side load on the bearings causing increase friction and wear. The XD-15 bottom bracket eliminates the problem and the bottom bracket runs smoothly even with side load. This makes the bottom bracket a lot more robust to variations in installations. The parts required for the angular contact bearings are also all made in the US including the retainers and double lipped seals.

XD-15 bottom brackets come with a one year guarantee against wearing out or defects. That means you can ride them to your hearts content in rain and muck and not have to worry - they are that tough!