Trek Knock Block Headset Bearings Kit Bearing Quality:Stainless Steel For Giant TCR bikes

For Giant TCR bikes

1 Different Part ref's)

For all bikes using the IS42/IS52 Headset Bearing Kit

This kit is for the Saracen Ariel 30 / 60 /80 Full Frame Pivot Bearing Kit | 2021+

Lower Bearing - MH-P03K

Trek Knock Block Headset Bearings Kit Bearing Quality:Stainless Steel For Giant TCR bikesFor all bikes using the Trek Knock Block Headset Bearing Kit Both the upper and lower headset bearings, two bearings included in sale. 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