Planet X London Carbon Headset Bearing Kit ACB30418K This kit is for the

This kit is for the Transition Patrol Carbon | 2018-2020

For Boardman SLR Bikes

This kit is for the Transition Sentinal Alloy | 2018-2026

For all Norco Search 2017 Carbon Bikes

for all model years

Planet X London Carbon Headset Bearing Kit ACB30418K This kit is for theBoth the upper and lower headset bearings, two bearings included in sale. For all Planet X London Carbon 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.