Enduro's top-of-the-line bottom bracket for Shimano 24mm cranks in a BBRight frame. TorqTite cups thread together inside the shell for a secure, creak-free fit around XD-15 Corsa bearings.

Highlights

• TorqTite cups thread together inside the press-fit shell
• XD-15 Corsa 45° angular contact ceramic-hybrid bearings
• Cryogenically treated XD-15 nitrogen steel races, Grade 5 silicon nitride balls
• For BBRight shells and Shimano 24mm spindle cranks
• Precision-machined aluminium cups in blue
• Limited Lifetime Warranty against corrosion, wear and defects

TorqTite and XD-15 Corsa

Enduro's top-of-the-line bottom bracket bearing, XD-15 Corsa, combines corrosion-proof, cryogenically treated XD-15 nitrogen steel races with Grade 5 silicon nitride ceramic balls in a 45° angular contact design. Enduro presses the bearings into precision-machined aluminium TorqTite cups that thread together in the BB shell for a simple, secure and creak-free installation. Enduro makes its XD-15 bottom brackets and bearings at its own production facility in California, USA.

Gets smoother with use

Most ceramic-hybrid bearings roll best on the day they go in and slow down from there. Enduro says XD-15 bearings do the opposite: as they wear in, the balls make the races smoother still, so the bottom bracket rolls faster and smoother with time and use.

Compatibility & fit

For BBRight frames and Shimano 24mm spindle cranksets. Because the bearings sit inboard in BBRight frames, Enduro notes installation can need two tool sizes: a 52mm x 16-spline tool on the non-drive side and a 44mm x 16-spline tool on the drive side. Enduro recommends pressing the non-drive side in first, then holding it with the bottom bracket tool while the drive side is tightened to torque. Enduro lists its BBT-52x16-24 and BBT-44x16-24 Pro Cup sockets, BBT-010 flat wrench and BRT-060-MH press for the job. Press-fit bottom brackets need the right tools to go in straight. Our workshop can install it for you as a separate service; fitting isn't included in the price.