The EBC brake pads have great predictable stopping power, and they benefit from low disc abrasion and dust. They are brake rotor friendly, and slower to brake in the wet. These organic brake pads are ECE R 90 brake safety test approved and fully TÜV tested. EBC Organic Brake Pads FA034 For Front: Yamaha: 1978 XS 400 C; 1979 XS 400; 78-82 SR 500; 78-79 XS 500 C/D; 1982 XJ 650 RJ Seca; 80-84 XJ 650; 77-81 XS 650; 79-80 XS 650 SE; 1981 XS 650 SE; 77-79 XS 750; 1980 XS 850; 1981 XV 1000 TR1; 78-80 XS 1100. Rear: Yamaha: 1978 XS 400 C; 78-79 X IMPORTANT: Picture is for indication purpose only. To visually check the kit, you can visit EBC website. The bought kit will match your motorcycle.