The ahead cap by 3min19sec you give your headset a simple and functional finish. It is compatible with 1 1/8" headset tops and comes with bolt. The cap is made of aluminium and was deliberately designed to be flat, which also explains its low weight of only 6 grams. So that it visually matches any bike, it comes in neutral black. If you have lost your original ahead cap, here is an inexpensive replacement.