Giant TCX Advanced Headset Kit Norco Lower Bearing - MR137

Lower Bearing - MR137

For all Orbea Orca Aero bikes

For all Liv Avail

For all Transition Sentinal Bikes

Lower Bearing - MH-P25K

Giant TCX Advanced Headset Kit Norco Lower Bearing - MR137This listing includes both the upper and lower headset bearings, two bearings included in sale. For Giant TCX 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: