BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | OFFROAD SPROCKETS SPROCKETS 620 FITS MODEL STOCK GEARING STOCK CHAIN FRONT SIZE PART # REAR SIZE PART # COLOR YAMAHA (CONT) YZ125 99-01 13-48 520-112 12 GR R257-520-12 46T R150A-520-46 Silver YZ125 02-04 13-49 520-112 13 GR R257-520-13 47T R150A-520-47 Silver 48T 1211-0025 Black 48T 1211-0164 Blue 48T 1211-3090 Purple 48T R150A-520-48 Silver 49T 1211-0026 Black 49T 1211-0165 Blue 49T 1211-3091 Purple 49T R150A-520-49 Silver 50T 1211-0027 Black 50T 1211-0166 Blue 50T 1211-3092 Purple 50T R150A-520-50 Silver 51T 1211-0028 Black 51T 1211-0167 Blue 51T 1211-2777 Hard Anodized 51T 1211-3093 Purple 51T R150A-520-51 Silver 52T 1211-0029 Black 52T 1211-0168 Blue YZ125 05-13 13-48 520-112 13 GR 1212-0991 46T R150A-520-46 Silver YZ125 14-20 13-48 520-114 14 GR 1212-0992 47T R150A-520-47 Silver YZ125 21 13-48 520-114 48T 1211-0025 Black YZ125 22 13-N/A 520-112 48T 1211-0164 Blue YZ125 23-26 13-50 520-112 48T 1211-3090 Purple YZ125G 16 13-48 520-116 48T R150A-520-48 Silver YZ125X 20-26 13-50 520-114 49T 1211-0026 Black 49T 1211-0165 Blue 49T 1211-3091 Purple 49T R150A-520-49 Silver 50T 1211-0027 Black 50T 1211-0166 Blue 50T 1211-3092 Purple 50T R150A-520-50 Silver 51T 1211-0028 Black 51T 1211-0167 Blue 51T 1211-2777 Hard Anodized 51T 1211-3093 Purple 51T R150A-520-51 Silver 52T 1211-0029 Black 52T 1211-0168 Blue WR200 91-92 13-52 - 12 GR R257-520-12 - - - 13 GR R257-520-13 WR250 91-92, 94-96 14-52 - 12 GR R252-520-12 - - - WR250 93 14-51 - 13 GR R252-520-13 WR250 97 13-48 - 14 GR R252-520-14 YZ250 88-93 14-49 - 15 GR R252-520-15 YZ250 94-97 13-49 - YZ250 98 14-49 - YZ250WR 89 14-49 - YZ250WR 90 14-51 - YZ250 99-01 14-50 520-114 12 GR R289-520-12 46T R150A-520-46 Silver YZ250 02-04 14-49 520-114 13 GR R289-520-13 47T R150A-520-47 Silver YZ250 05-23 14-50 520-114 14 GR R289-520-14 48T 1211-0025 Black YZ250 24 13-52 520-114 14 ULG R289U-520-14 48T 1211-0164 Blue YZ250 25-26 14-50 520-114 15 GR R289-520-15 48T 1211-3090 Purple YZ250G 16 14-50 520-114 48T R150A-520-48 Silver YZ250X 16 13-49 520-114 49T 1211-0026 Black YZ250X 17-26 14-50 520-114 49T 1211-0165 Blue 49T 1211-3091 Purple 49T R150A-520-49 Silver 50T 1211-0027 Black 50T 1211-0166 Blue 50T 1211-3092 Purple 50T R150A-520-50 Silver 51T 1211-0028 Black 51T 1211-0167 Blue 51T 1211-2777 Hard Anodized 51T 1211-3093 Purple 51T R150A-520-51 Silver 52T 1211-0029 Black 52T 1211-0168 Blue FITS MODEL STOCK GEARING STOCK CHAIN FRONT SIZE PART # REAR SIZE PART # COLOR YAMAHA (CONT) WR250F 01-07 13-52 520-114 13 GR 1212-0991 46T R150A-520-46 Silver WR250F 08-19 13-50 520-114 14 GR 1212-0992 47T R150A-520-47 Silver WR250F 21-22 13-51 520-116 48T 1211-0025 Black WR250F 23 13-52 520-114 48T 1211-0164 Blue WR250F 24-25 13-51 520-114 48T 1211-3090 Purple YZ250F 01-04 13-48 520-114 48T R150A-520-48 Silver YZ250F 05-11 13-49 520-114 49T 1211-0026 Black YZ250F 12-21 13-50 520-114 49T 1211-0165 Blue YZ250F 22 13-51 520-114 49T 1211-3091 Purple YZ250F 23-26 13-50 520-114 49T R150A-520-49 Silver YZ250F 60th Anniversary 16 13-48 520-114 50T 1211-0027 Black YZ250FX 15-25 13-51 520-114 50T 1211-0166 Blue 50T 1211-3092 Purple 50T R150A-520-50 Silver 51T 1211-0028 Black 51T 1211-0167 Blue 51T 1211-2777 Hard Anodized 51T 1211-3093 Purple 51T R150A-520-51 Silver 52T 1211-0029 Black 52T 1211-0168 Blue TT350 86-87 14-50 - - - 49T R131-49 Silver 50T R131-50 Silver 51T R131-51 Silver WR400F 99-00 14-50 520-114 12 GR R289-520-12 46T R150A-520-46 Silver WR426F 00-02 14-50 520-114 13 GR R289-520-13 47T R150A-520-47 Silver YZ426F 00-02 14-48 520-114 14 GR R289-520-14 48T 1211-0025 Black WR450F 03-09 14-50 520-114 14 ULG R289U-520-14 48T 1211-0164 Blue WR450F 11-25 13-50 520-114 15 GR R289-520-15 48T 1211-3090 Purple YZ450F 03-04 14-48 520-112 48T R150A-520-48 Silver YZ450F 05 14-51 520-116 49T 1211-0026 Black YZ450F 06-07 13-49 520-120 49T 1211-0165 Blue YZ450F 08-09, 14 13-49 520-114 49T 1211-3091 Purple YZ450F 10-13, 15-25 13-48 520-114 49T R150A-520-49 Silver YZ450F 6 0th Anniversary 16 13-48 520-114 50T 1211-0027 Black YZ450FX 16 13-48 520-114 50T 1211-0166 Blue YZ450FX 17-25 13-50 520-114 50T 1211-3092 Purple 50T R150A-520-50 Silver 51T 1211-0028 Black 51T 1211-0167 Blue 51T 1211-2777 Hard Anodized 51T 1211-3093 Purple 51T R150A-520-51 Silver 52T 1211-0029 Black 52T 1211-0168 Blue YZ490 82 14-44 12 GR R252-520-12 49T R131-49 Silver YZ490 83-84 14-46 13 GR R252-520-13 50T R131-50 Silver YZ490 85 14-44 14 GR R252-520-14 51T R131-51 Silver YZ490 86-90 14-48 15 GR R252-520-15 WR500 92-93 15-50 12 GR R252-520-12 49T R131-49 Silver 13 GR R252-520-13 50T R131-50 Silver 14 GR R252-520-14 51T R131-51 Silver 15 GR R252-520-15 TT600 83-86 14-50 - - - 49T R131-49 Hard Anodized 50T R131-50 Hard Anodized 51T R131-51 Hard Anodized SPROCKETS (CONT)
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