Available Brakepads REAR HIGH PERFORMANCE BRAKEPADS S50 AUDI A4 8W B9 A5 MK2 F5 A6 4A C8 A7 4K Q5 FY Q7 4M... SDT BRAKES Ref. 21101300 €136.04 We manufacture our SDT Brakes High Performance car brakepads with an organic compound (S-50), developed for sport use and improving safety in your braking.. Ideal for daily and performance, also for off road and commercial cars.