Details matter when you are building up a bike and the stem cap should not be overlooked. This ultralight and ultra-sleek stem cap fits flush with your stem or can be used with a spacer under it. It is precision machined out of 7075-T6 aluminum for the lowest weight without any performance compromise. Compatibility Related Products with integrated Spacer Kit - 1 1/8" top (straight 1 1/8" or 1 1/2" to 1 1/8" taper) steerer tubes only