Planet X On-One Rujo Headset Bearing Kit headset-bearing-kit-specialized-fuse-2015-esi5011615 For all bikes using the

For all bikes using the Nukeproof Horizon Headset Kit

Upper Bearing - ACB30418K

For Canyon Sender Carbon CF and Alloy AL

For all Planet X On-One Rujo Bikes

For Canyon Grail CF

Planet X On-One Rujo Headset Bearing Kit headset-bearing-kit-specialized-fuse-2015-esi5011615 For all bikes using theBoth the upper and lower headset bearings, two bearings included in sale. For all Planet X On One Rujo Bikes Upper Bearing MH P03K Lower Bearing ACB518K GCR15 High Carbon Chromium Bearings: Chromium offers a corrosion resistance to the bearing, allowing you to get more use out on the trails and less time in the workshop changing bearings again due to rust and seizing. Buna NitrileRust Resistance Seals: Prevents moisture getting inside the bearing.