PAGID 1587-RST4 Rear brake pads RST4 HYUNDAI Genesis Coupe 3.8 track / AP Racing CP5119 D50 / StopTech ST26
RST 4 is a semi metallic resin bonded material containing steel fibers. This material has a medium friction level and high temperature resistance.
Formula cars and open wheel racing. Rear axle material for Rally (tarmac and gravel) and for all front engine cars. Also used in NASCAR on long ovals.