P Series Brake Pad ORGANIC BRAKE PADS These organic brake pads are a suitable replacement pad for all road bikes and scooters. TUV and ECE R90 type approved. Street Bikes Premier's most successful general use material, the "P" series pads, are tough aramid fibre based organic material giving supurb brake effect on all sport bikes and cruisers. Off Road Part numbers relating to off road machines are a carbon graphite compound for medium durability, good brake effect and minimum heat generation. Reminder: one set of brake pads services one brake disc, if you are servicing multiple discs you will need multiple sets of brake pads. Fits: Yamaha SR500 1978-1982 XS1100 1978-1981 XS1100R 1981 XS250 1978-1981 XS360 1976-1977 XS400 1978-1979 XS650 1968-1974 1976-1985 XS750 1977-1979 XS750SE 1979 XS850 1978-1983