1-1/8 Inch Double Sealed Bicycle Headset Bearing 30.15x41x6.5mm Angular Contact 45/45 Chrome Steel GCR15 Rubber Seals For Smooth Steering And Long Lasting Performance

1-1/8 in Headset Bearing, 45/45, 30.15x41x6.5mm - Single
✔️ 1-1/8 in headset bearing specs: 45/45 angle, 30.15x41x6.5mm

The 1-1/8 in headset bearing is a double-sealed angular contact ball bearing used in bicycle headsets to enable smooth, precise steering. This 45/45 angled bearing fits standard 1-1/8 inch head tubes and is a common upgrade for road, mountain, and commuter bikes.

✅ Bore: 30.15 mm (1.19 in)
✅ Outer diameter: 41 mm (1.61 in)
✅ Width: 6.5 mm (0.26 in)
✅ Material: chrome steel GCR15
✅ Seals: rubber double-sealed (color may vary)
✅ Pack: 1 bearing per single unit

💡 What is a bicycle headset bearing used for?

Designed to allow the fork to rotate smoothly while maintaining headtube alignment under rider load. - Enables smooth steering rotation and headtube alignment. - Handles radial and axial loads at the 45/45 contact angle. - Uses chrome steel bearing and rubber seals for durability. - Common in road, mountain, and commuter bikes.