EBC make two sintered pad blends, SR11 lower friction and SR21 high friction.

Both are fully sintered pad blends for fastest asphalt race and endurance applications and have been independently dyno tested to LMGTE/GTLM race parameters. The new EBC SR range is a low-noise, fast bedding, long-life sintered pad blend that is designed to offer the LOWEST pad-wear-cost-per-lap in race driving. The pads work on a deposit film basis which reduces disc/rotor wear to almost zero. Bed-in is almost instant with one lap normally sufficient on decent rotor surfaces.

Just add the appropriate suffix to select higher or lower friction after the part number and thickness dimension.
EBC Sintered SR pads, manufactured in the USA, are renowned for their superior performance, offering increased bite and longevity without damaging rotors. Utilizing advanced
transfer film technology, these pads significantly reduce disc wear, providing better pedal feel and responsiveness.

The SR11™ medium friction compound is designed for both high ABS street cars and race cars, offering 3-5 times the lifespan of competitor semi-metallic pads.
Widely adopted by top racing teams in 2021, the SR pads have been requested for the 2022 season. For optimal performance, it is recommended to use SR21™ on the front and SR11™ on the rear.