Look up ds2500 but really you can just stay standard on the rear http://www.ferodoracing.com/products/car-racing/racing-brake-pads/ds2500/ You need to think about what you put as well though, these are for the rear so you won't notice much difference in bite anyway and If you want them to work well on track the pads will throw out dust.. I did 136 miles on track last month and the ds2500 I have performed well all day without any fade whatsoever. The dust was immense and the car was literally black with it down both sides but it does wash off lol