Swap the worn bottom bracket bearings on a Campagnolo Ultra Torque crankset for Enduro's top-tier XD-15 ceramic hybrid. It's built to wear in rather than wear out, and Enduro backs it with a Limited Lifetime Warranty against corrosion and wear.

Highlights

• XD-15 ceramic hybrid: cryogenically treated nitrogen steel races with Grade 5 silicon nitride balls
• 25 x 37 x 6mm radial bearing, ABEC-5
• Enduro's most common use for it: a direct replacement bearing for Campagnolo Ultra Torque cranksets
• Dual-lip labyrinth (LLB) seals over a 90% fill of Kluber NBU52 grease
• Limited Lifetime Warranty against corrosion and wear

Why XD-15

Most ceramic hybrid bearings are at their fastest on day one and slow down as their steel races wear. Enduro's XD-15 races are a corrosion-resistant, cryogenically treated nitrogen steel, and Enduro says the hard ceramic balls polish them smoother as the bearing wears in. Deep-groove raceways make room for the largest possible balls, spreading load over a bigger contact area for performance and longevity.

Seals and grease

Dual-lip labyrinth (LLB) seals ride in a micro-groove to keep water and grit out, and hold in a 90% fill of Kluber NBU52 grease that resists washing out.

Compatibility & fit

Enduro lists this bearing's most common use as a direct replacement for Campagnolo Ultra Torque cranksets, where the bottom bracket bearings are attached to the crankset rather than the cups. Check your existing bearing is a 6805N (25 x 37 x 6mm) before ordering. Fitting is a separate workshop service; replacing bearings on a crank needs the right tools, and our workshop can do it for you.