Oneup Components Axle R Shims The Oneup Components Axle R Shims are compatible with the Oneup Components Axle R, which uses a solid 7075-T6 rod rather than a hollow tube makes this the strongest possible rear axle design while still being lighter than a stock 12mm thru axle with integrated lever. The Oneup Components Axle R Shims replace the stock black ones for perfect anodize color matching. With these you'll have an extra bit of customization to your bike. Features Colors caps available in Blue, Green, Orange, Purple, Red Compatible with Oneup Components Axle R | Oneup Components | Axle R Shims Purple