SR-21? delivers an aggressive, ultra-high friction profile and fade resistance up to 925degC (1697degF) - Engineered with transfer film technology to provide highly responsive pedal feel, zero chemical bedding, and the lowest cost-per-racing-mile on the track. Built with an advanced fully sintered metallic compound, these race pads maximize initial bite and high-speed deceleration under extreme circuit conditions while significantly extending disc life during long endurance stints