The Enduro Bearings BSA Bottom Bracket XD15 PRO is a thread-in, ceramic-hybrid, angular contact bearing bottom bracket designed for 68mm BSA framesets. These bottom brackets feature XD-15 15° angular contact cartridge bearings pressed into precision-machined aluminium cups that thread directly into the bottom bracket shell.
Utilising the same XD-15 steel as the XD-15 Corsa bearing, the XD-15 Pro bearings offer a 15º angular contact sealed bearing in a standard-sized cartridge. The bearings feature deep-groove raceways allowing for maximum-sized Grade 3 Silicon Nitride ceramic balls, providing increased contact area for improved performance and longevity.
Manufactured at the Enduro Bearings production facility in California, USA, these bottom brackets combine corrosion-proof, cryogenically treated nitrogen steel races with Silicon Nitride Grade 3 ceramic balls. This proprietary process results in a high-performance bearing setup. This thread-in solution allows for fitting 30mm cranks into a BSA threaded bottom bracket shell.
Performance and Longevity:
Unlike other options, these bearings improve with use. As the bearings wear-in, the balls make the races even smoother. While other ceramic-hybrid bearings claim speed and power advantages on day one, Enduro XD-15 bearings provide these initial advantages while continuing to get faster and smoother over time. Enduro Bearings offers an unlimited lifetime bearing and race warranty.
Technical Specifications:
- Shell Fitment: BSA
- Bearings: XD-15 Ceramic
- Seal Type: LLB
- Grease: Kluber NBU52
- Axle Size: 30mm
- Warranty: Limited Lifetime