The Steerer Clamp is a headset spacer with an additional clamping function, designed to go underneath your stem for double security.
Not only does this ensure that your headset holds well, it's ideal for working/travelling with your bike.
If you have the bike in the work stand, you can tighten the steerer clamp and it'll hold everything in place when you loosen your stem and headset.
If you're removing/turning your bars for travelling, this'll keep everything in place until you arrive at your destination.

- Allows removal of stem and handlebars without the fork sliding out of the frame
- Keeps headset perfectly adjusted when you have to twist the handlebars for transport or remove the cockpit to ship a bike