PolyMatrix pad, rotor, and flexline upgrade kits offer measurable brake performance improvements to racers and enthusiasts using the OE factory brake calipers. High performance pad compounds are specially selected to provide increased brake response and higher resistance against fade. Depending on the specific vehicle and parking brake design, one or two-piece rotors are used to provide high temperature durability for the track or high-tech style with corrosion resistance for the street. Stainless steel braided Teflon core flexlines add style, durability, and firmer response with reduced deflection under load.