As required by the BB94 bottom bracket shell, the non-drive side bearing comes with an integrated 6061 aluminum bearing shield and inner race extender. The kit also includes an aluminum-centered silicone seal and wave washer for the drive side. Grade 5 steel ball bearings are matched with hardened chromium steel races. Packed with marine grade grease. Please note that due to the proprietary nature of the Wilier BB94, that none of our other GXP bearing kits are compatible with the Wilier (they will fit into the shell, but the GXP crank set chain line will not be correct).

Instructions are included.