Brake Calipers For many years AP Racing have been a world leader in the technology and manufacture of Motorcycle Brake Calipers. Many of the world's premier race series have been won using AP Racing braking systems. With one of the most comprehensive brake caliper ranges available, we can supply AP Racing Calipers for any Motorcycle application. Brake Master Cylinders AP Racing Master Cylinders have been designed to incorporate a variable lever ratio. This world patented feature allows a wide range of adjustment for both Brake performance and feel. In addition the CP4125 and CP4225 series allows lever position adjustment. Brake Discs AP Racing Disc and Bell assemblies are lightweight in design and are manufactured in 3l0mm and 320mm diameter. All the discs are 6mm thick and have been designed for use exclusively with the AP 6 piston brake calipers. The special high grade iron material used in AP Racing Brake Discs gives better performance and stability than the stainless steel material commonly used for production discs. Brake Pads Brake Pads are available for all AP Racing Motorcycle Brake Calipers. Brake Kits Developed from AP's huge experience in Superbike Racing, these lightweight brake conversion kits are compact in design. The individual applications enable the complete conversion to be a direct bolt-on replacement for the original equipment brake system. All kits are supplied with full comprehensive fitting instructions.