IS52/IS52 (ZS52/ZS52) Headset Bearing Kit Acros MR137 compatible for all model years

compatible for all model years

For Ridley Noah & Fenix Bikes

Both the upper and lower headset bearings

For Boardman Comp Bikes

For all bikes using the FSA Orbit I No:16 Headset

IS52/IS52 (ZS52/ZS52) Headset Bearing Kit Acros MR137 compatible for all model yearsThis listing includes both the upper and lower headset bearings, two bearings included in sale. For all bikes using the IS52 IS52 (ZS52 ZS52) Headset Bearing Kit Upper Bearing ACB4252H7 ? Lower Bearing MH P16 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