AP Racing SF Supersport Sinter Front Disc Pads. For over 50 years UK-based AP Racing has been at the forefront of the motorsport industry, creating 2 and 4 wheel winners on track including MotoGP, F1, NASCAR and WTCC. AP Racing's unparalleled experience in racing brake technology places them in a unique position to evaluate friction materials and brake pad performance both on dyno test beds and through rigorous track testing. AP Racing have pushed the boundaries of motorcycle brake system design to their limits with products supplied to MotoGP, World and National Superbike Championships, Supermoto and Sidecars. AP Racing offers a comprehensive high performance aftermarket sinter and organic brake pad programme for motorbikes and scooters. Friction materials used in a brake system are a vital factor in the overall performance and safety of a system, therefore front and rear pads with specific friction compounds to cater for different braking requirements between front and rear calipers are essential. All AP Racing motorcycle and scooter brake pads are made in Europe according to the highest and most demanding quality standards in this business.