Performance Machine now offers its proven, Six Piston Differential Bore Caliper with design matched 13-inch discs for 1999-2008 Suzuki Hayabusas when running PM Forged Street Wheels. The caliper comes with the required mounting bracket that bolts on to Hayabusa forks, allowing space for a 13-inch PM disc. Applications are available for single or dual disc, and if they choose not to run a PM caliper, a bracket is offered that allows the use of the stock Hayabusa caliper.