Specialised Tarmac SL4 Headset Bearings Kit Trek For Specialized Aethos Bikes

For Specialized Aethos Bikes

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

For all Marin Alpine Trail (Inc

Zurigo Disc

suits all model years

Specialised Tarmac SL4 Headset Bearings Kit Trek For Specialized Aethos BikesThis listing includes both the upper and lower headset bearings, two bearings included in sale. For Specialized SL4 Bikes, compatible for all model years. Upper Bearing MH P08F Lower Bearing MH P21 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: