Mondraker Thundra X / Alloy Headset Bearing Kit headset-bearing-kit-ribble-ultra-sl-2013-esi2265445 For Boardman MTR Bikes

For Boardman MTR Bikes

For all bikes using the IS42/IS52 Headset Bearing Kit

San Quentin

For Marin Headlands 1 & 2 Bikes

For all Giant Trance Glory Anthem Reign XTC bikes using the Giant OD (Overdrive MTB) headset

Mondraker Thundra X / Alloy Headset Bearing Kit headset-bearing-kit-ribble-ultra-sl-2013-esi2265445 For Boardman MTR BikesBoth the upper and lower headset bearings, two bearings included in sale. For Mondraker Thundra X Alloy Bikes Upper Bearing MH P03K Lower Bearing MH P25K 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.