Enduro's premium BB solution features XD-15 45° Angular Contact bearings precision-fitted into aluminum TorqTite cups that thread together for a secure, noise-free installation. Manufactured in California to exacting standards, these bottom brackets combine cryogenically treated nitrogen steel races with Grade 3 Silicon Nitride ceramic balls, creating an unparalleled performance bearing system that delivers superior durability and efficiency in demanding conditions.

Discover why Bike Radar declared the XD-15 "Hands down, the best bottom bracket we have ever tested." Backed by an unlimited lifetime bearing and race warranty, these bearings uniquely improve with usage—the ceramic balls actually polish the races to create increasingly smoother operation over time. While competing ceramic-hybrid bearings deteriorate with use, Enduro XD-15 bearings deliver not only comparable initial performance advantages but continue to enhance speed and efficiency throughout their service life, offering superior long-term value and performance.

Navigating the complex landscape of bottom bracket compatibility requires precision engineering solutions. Enduro's comprehensive range encompasses over 50 distinct bottom bracket variants, addressing diverse shell and crankset combinations across multiple performance tiers. Their threaded options support BSA, BSA 30, Italian, and the robust T47 standards, while press-fit applications benefit from their innovative thread-together Torqtite technology and Delrin Cup alternatives. Enduro's engineering excellence extends to specialized solutions like flanged, double-row bearings for 30mm cranksets in BB86 shells, ensuring optimal performance regardless of your frame's specifications.