Ridley X-Night & X-Fire Headset Kit headset-bearing-kit-ribble-cx-sl-2013-esi7228880 Lower Bearing - MR137

Lower Bearing - MR137

For all Merida Scultura Bikes

For all Norco Threshold 2017-2021 Carbon Alloy Bikes

Upper Bearing - ACB4252H7

Ridley X-Night & X-Fire Headset Kit headset-bearing-kit-ribble-cx-sl-2013-esi7228880 Lower Bearing - MR137Both the upper and lower headset bearings, two bearings included in sale. For Ridley X Night & X Fire Bikes 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 getting inside the bearing.