Using this MCP 181375 rear billet brake caliper is easy. First, make sure you use DOT 5 brake fluid only and connect it to a 3/16' nylon brake line. When installing, align the caliper according to the 2 1/4' center - to - center bolt pattern. You can adjust the brake pad gap by using the shims. If you have wider discs, you can still use this caliper by shimming it properly. Always check the fittings and bleeders regularly to ensure proper braking performance. Keep the caliper clean and dry to prevent rust. And don't forget to follow the maintenance schedule of your Eagle Kart to keep everything in top shape.