Giant Defy Advanced Pro Headset Bearing Kit headset-bearing-kit-ktm-revelator-2012-esi5365050 For all Bird Aeris 9

For all Bird Aeris 9 / AM9  Bikes

This listing is for a full set of MAX Frame Pivot Bearings only (10 MAX Bearings Supplied

For Ribble Ultra SL Bikes

This listing is for a full set of MAX Frame Pivot Bearings only (12 MAX Bearings Supplied

For all Santa Cruz Megatower Bikes

Giant Defy Advanced Pro Headset Bearing Kit headset-bearing-kit-ktm-revelator-2012-esi5365050 For all Bird Aeris 9This listing includes both the upper and lower headset bearings, two bearings included in sale. For Giant Defy Advanced Pro 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