13 Teeth Gas Gas Off Road 250 EC 4T 11-12 250 EC F 4T 12 250 EC F 4T 13-15 250 EC Six Days 11-12 300 EC F 13-15 300 EC F Six Days 4T 12 450 EC F 13-15 Yamaha Off Road YZ125 T,V,W,X,Y,Z,A1,B,D2,E2,F2,G2,H2,J2,K2 05-19 YZ125 L2 20 YZ125 X-L 20 WR250 FN (Enduro Version) 01 WR250 F-N,P,R,S,T,V (Off Road Version)5UM6 01-06 WR250 F-W,X,Y,Z (Off Road Version)5UMU/W 07-10 WR250 F-F,G,H,J,K,L (Off Road Version)2GB 15-20 WR250 F-A,B,D,E,F,G,H (Off Road Version) USA11-17 WR250