Planet X On-One Bootzipper Headset Bearing Kit headset-bearing-kit-planet-x-on-one-hello-dave-2015-esi4345708 For Ribble Gran Fondo

For Ribble Gran Fondo

For Specialized Tarmac SL6

For all Santa Cruz Highball Bikes

For all Planet X XLS Evo Carbon Bikes

For Bianchi Specialissima

Planet X On-One Bootzipper Headset Bearing Kit headset-bearing-kit-planet-x-on-one-hello-dave-2015-esi4345708 For Ribble Gran FondoBoth the upper and lower headset bearings, two bearings included in sale. For all Planet X On One Bootzipper 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