Giant Defy Advanced Headset Kit Trek This kit is for the

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

5 Different Part ref's)

suitible for all model years

For Liv Langma Advanced SL & Pro bikes

Giant Defy Advanced Headset Kit Trek This kit is for theThis listing includes both the upper and lower headset bearings, two bearings included in sale. For Giant Defy Advanced bikes, compatible with all model years. Upper Bearing MR136 Lower Bearing MR137 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: