External diameter: 40 mm
Internal diameter: 31 mm
Ball diameter: 5/32 (3.97 mm)
Type: ball cage
Make sure the cups' ball bearing housing are not damaged, otherwise it is recommended to replace them to get smoother working order.
Apply grease to bearings to make them longer lasting and your headset smoother.
Do not use a high-pressure cleaner on bearings.
Regularly check your headset is not coming loose.
Need any help?
The technicians at your Decathlon store are at your service to help you replace your bike parts. Feel free to ask them for help!
Store the ball cages in a dry and temperate place, keeping it away from corrosive products and sea air.