Kartboy knows when it comes to brakes you just can't play around. If you like the new FHI 2 pot rear brakes, you need this adapter. Stronger than any aluminum adapter on the market, Kartboy went all out with these. These adapter kits also include all the mounting hardware utilizing grade 12.9 bolts, which are the strongest bolts available today. If you don't take chances when it comes to safety and the performance of your braking system, Kartboy’s FHI 2 Pot Rear Caliper Adapters are for you.