Giant Defy Advanced Headset Kit Trek 5 Different Part ref's)

5 Different Part ref's)

For Liv Avail Advanced Pro bikes

suitible for all model years

For all Vitus Energie 2014-2024 Bikes

Packed with Lithium Grease: Ensures smooth operation and protection from the elements

Giant Defy Advanced Headset Kit Trek 5 Different Part ref's)This 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: