Planet X On-One Bootzipper Headset Bearing Kit frame-bearing-kit-commencal-meta-sx-2022-esi2139199 For Ribble Ultra SL bikes

For Ribble Ultra SL bikes where the lower headset bearing is slightly taller in height

Zurigo Disc

For all bikes using the Acros AiX-322 R3 Headset

For all Transition Scout Bikes

Planet X On-One Bootzipper Headset Bearing Kit frame-bearing-kit-commencal-meta-sx-2022-esi2139199 For Ribble Ultra SL bikesBoth 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