EBC Brakes 504 High Quality Brake Shoes with High Friction Linings for increased efficiency. For use on the following models:Yamaha Street Bikes: LB 50 PG/PH/PJ Chappy (80-82 F&R;), RX 50 MK/K/L (83-84 R), RXZ 135 (2UX/3UK1) (87-89 R)Yamaha Dirt Bikes: DT 80 H/J (81-82 F&R;), DT 100 G/H/J (80-82 F&R;), MX 100 G/H/J (80-82 F&R;), YZ 100 F/G/H (80-81 F), IT 125 G/H (80-81 F), MX 175 G/H (80-81 F), TY 350 N/S (85-86 R), BW 350 T/U (87-88 R)United Motors: Zyclone 50 (04-05 R)Please see ourWarranty & Returns Policy.