The most popular Supermoto caliper for Pro Supermoto racers. This is Brembo Billet Radial Mount Caliper. Big 4 pistons have the biggest bite of all. Caliper made of billet aluminum for maximum cooling and minimum weight. Mount bracket sold separately. Caliper is sold by itself and radial mounted with use of aluminum bracket sold separately or you can buy the caliper together as a complete kit. Kit includes caliper and brake pads.