Exclusive to Enduro Bearings, our XD-15 Ceramic-Hybrid bearings feature cryogenically treated nitrogen steel races paired with Grade 3 Silicon Nitride ceramic balls through a proprietary manufacturing process. The deep-groove raceways maximize ball size, enhancing contact area for superior performance and durability. Protected by dual-lip labyrinth (LLB) seals, these bearings contain 90% fill Kluber NBU52 grease that improves with use and resists washout, ensuring optimal performance in demanding conditions.

The most impressive feature of XD-15 ceramic-hybrid bearings is, unlike other bearings, they only get better with time and use. As the bearings wear-in, the super-hard ceramic balls actually make the XD-15 races even smoother. So, when compared to other ceramic-hybrid bearings on the market that claim speed and power advantages on day one, Enduro XD-15 bearings not only provide the same initial advantages on day one, but will become faster and smoother with time and use, while the other ceramic-hybrid options will only get slower. We are so confident in the performance of XD-15 Ceramic-Hybrid bearings that we offer an unlimited lifetime bearing and race warranty.

This radial bearing serves multiple applications including quick-release hub designs, pedal mechanisms, and potential pivot points—though the MAX variant is superior for suspension systems