BOLD MAGENTA part numbers are new for 2025 PARTS-UNLIMITED.COM 2025 | OFFROAD SPROCKETS SPROCKETS 652 FITS MODEL OEM GEARING C/S REAR CHAIN SIZE FRONT SIZE PART # REAR SIZE PART # HONDA XR50R 00-03 14-37 420-78 14 K22-2501A 36 1210-0370 15 K22-2501B 37 1210-0371 CRF50F 04-22 14-37 420-78 - - 36 1210-0370 37 1210-0371 MR50 74-75 12-43 420-92 12 K22-2501 - - 13 K22-2502 14 K22-2503 15 K22-2504 Z50A 69-71 13-34 420-74 12 K22-2505 - - Z50A 72-78 12-37 420-76 13 K22-2506 Z50R 79-81 12-37 420-76 Z50R 82-87 13-37 420-76 Z50R 88-99 13-37 420-76 14 K22-2889 37 K22-3901 XR70R 00-03 15-36 420-86 - - 46 K22-3504M 47 K22-3502P CRF70F 04-12 15-36 420-86 14 K22-2501A 46 K22-3504M 15 K22-2501B 47 K22-3502P FITS MODEL OEM GEARING C/S REAR CHAIN SIZE FRONT SIZE PART # REAR SIZE PART # HONDA (CONT) CT70 69-71 15-38 420-88 12 K22-2501 36 K22-3584 CT70 72-82 15-35 420-86 13 K22-2502 44 K22-3506 CT70H 70-72 14-45 420-92 14 K22-2503 46 K22-3585 CT70 91-94 15-35 420-86 15 K22-2504 XL70 74-76 13-44 420-96 XR70R 97-99 15-36 420-86 13 K22-2502 46 K22-3504M 14 K22-2503 47 K22-3502P 15 K22-2504 XL75 77-79 14-36 420-94 12 K22-2501 36 K22-3584 XR75 73-76 14-44 420-100 13 K22-2502 44 K22-3506 XR75 77-78 14-46 420-100 14 K22-2503 46 K22-3585 15 K22-2504 XR80R 85-03 14-46 420-110 12 K22-2501 46 K22-3504M 13 K22-2502 47 K22-3502P 14 K22-2503 15 K22-2504 SPROCKETS •All our front and rear sprockets are manufactured to OEM specs using high-grade hardened steel for long life •All match original equipment exactly and feature precision-machined splines and teeth for a perfect fit •Packaged individually in poly bags •Lightweight rear sprockets available for some applications; see chart K22-3816 K22-3928
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