BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | OFFROAD SPROCKETS SPROCKETS 662 FITS MODEL STOCK GEARING STOCK CHAIN FRONT SIZE PART # NOTES REAR SIZE PART # NOTES YAMAHA (CONT) DT250D/E/F 75-79 14-47 520-104 10 JTF569-10 47 JTR855-47 ST 11 JTF569-11 12 JTF569-12 13 JTF569-13 14 JTF569-14 15 JTF569-15 16 JTF569-16 17 JTF569-17 DT1 68 15-44 520-100 12 1212-0520 SC - - DT1 69-70 14-44 520-102 13 1212-0521 SC DT1 71 14-39 520-100 14 1212-0522 SC DT-1E 71 14-39 520-100 15 JTF565-15 SC DT1-MX 70 14-44 520-102 16 JTF565-16 DT1-MX 71 14-39 520-100 DT2 72 14-44 520-102 DT3 73 14-44 520-102 DT2-MX 72 15-51 520-106 MX250 73-74 15-51 520-102 IT250 77 13-46 520-104 10 JTF569-10 40 JTR853-40 ST IT250 78 14-46 520-104 11 JTF569-11 41 JTR853-41 ST IT250 79-80 13-48 520-102 12 JTF569-12 42 JTR853-42 ST IT250 81-82 13-50 520-108 13 JTF569-13 43 JTR853-43 ST IT250 83 13-48 520-110 14 JTF569-14 44 JTR853-44 ST 15 JTF569-15 45 JTR853-45 ST 16 JTF569-16 46 JTR853-46 ST 17 JTF569-17 48 JTR853-48 ST 49 JTR853-49 ST 50 JTR853-50 ST 52 JTR853-52 ST TT250 80 15-51 520-102 10 JTF569-10 47 JTR845-47 ST TT250 81-82 14-49 520-100 11 JTF569-11 XT250 80-83 15-47 520-98 12 JTF569-12 XT250C 83 15-47 520-98 13 JTF569-13 14 JTF569-14 15 JTF569-15 16 JTF569-16 17 JTF569-17 TT-R250 99-06 13-52 520-110 13 1212-0229 40 1211-2602 BLK 44 JTR853-44 ST 44 1211-2603 BLK 45 JTR853-45 ST 46 JTR853-46 ST 46 1211-2604 BLK 48 JTR853-48 ST 48 1211-2605 BLK 49 JTR853-49 ST 50 JTR853-50 ST 50 1211-2606 BLK 51 1211-2607 BLK 52 JTR853-52 ST TY250 74-77 14-53 428-114 12 1212-0215 - - 13 JTF1263-13 14 JTF1263-14 15 JTF1263-15 16 JTF1263-16 XT250C 84 15-48 520-106 13 JTF431-13 47 JTR845-47 ST XT250 84 15-48 520-106 XT250 08-23 15-48 428-128 15 1212-0762 47 1210-2690 ST 48 1210-0628 ST 51 1210-2691 ST FITS MODEL STOCK GEARING STOCK CHAIN FRONT SIZE PART # NOTES REAR SIZE PART # NOTES YAMAHA (CONT) YZ250 74 13-50 520-106 - - 40 1211-2602 BLK YZ250 75 13-52 520-106 40 JTR853-40 ST YZ250 76 13-50 520-106 41 JTR853-41 ST MX250 75 13-50 520-106 42 JTR853-42 ST 43 JTR853-43 ST 44 JTR853-44 ST 44 1211-2603 BLK 45 JTR853-45 ST 46 JTR853-46 ST 46 1211-2604 BLK 48 JTR853-48 ST 48 1211-2605 BLK 49 JTR853-49 ST 50 JTR853-50 ST 50 1211-2606 BLK 51 1211-2607 BLK 52 JTR853-52 ST YZ250 77 13-54 520-108 10 JTF569-10 40 1211-2602 BLK YZ250 78-79 13-48 520-108 11 JTF569-11 40 JTR853-40 ST YZ250 80 13-48 520-106 12 JTF569-12 41 JTR853-41 ST YZ250 81 14-48 520-110 13 JTF569-13 42 JTR853-42 ST YZ250 82 13-45 520-110 14 JTF569-14 43 JTR853-43 ST YZ250 83-84 13-48 520-112 15 JTF569-15 44 JTR853-44 ST YZ250 85-86 14-50 520-114 16 JTF569-16 44 1211-2603 BLK YZ250 87-90 14-49 520-114 17 JTF569-17 45 JTR853-45 ST YZ250 91-93 14-49 520-116 46 JTR853-46 ST YZ250 94-97 13-49 520-114 46 1211-2604 BLK YZ250 98 14-50 520-114 48 JTR853-48 ST YZ/WR250 89 14-49 520-114 48 1211-2605 BLK YZ/WR250 90 14-51 520-114 49 JTR853-49 ST WR250 91-96 14-52 520-116 50 JTR853-50 ST 50 1211-2606 BLK 51 1211-2607 BLK 52 JTR853-52 ST YZ250 99-15 14-50 520-114 13 1212-2002 ST 46 1210-2408 ST 14 1212-2003 ST 47 1210-1550 ST YZ250X 16-23 14-50 520- 13 1212-0521 SC 48 1210-2441 SC 14 1212-0522 SC 48 1211-2577 BLU 15 JTF565-15 SC 48 1211-2647 BLK 16 JTF565-16 SC 48 1210-2601 GR 49 1210-2442 SC 49 1211-2578 BLU 49 1211-2648 BLK 50 1210-2443 SC 50 1211-2579 BLU 50 1211-2649 BLK 50 1210-2603 GR 51 1210-2444 SC 51 1211-2580 BLU 51 1211-2650 BLK 52 1211-2581 BLU 52 1211-2651 BLK YZ250F 01-06 13-48 520- 13 1212-1951 ST 46 1210-2408 ST YZ250F 07-11 13-49 520- 13 1212-0512 SC 47 1210-1550 ST YZ250F 12-23 13-50 520-114 14 1212-1952 ST 48 1210-2441 SC YZ250FX 15-22 13-51 520-114 14 1212-0830 SC 48 1211-2577 BLU WR250F 01-06 13-52 520-114 48 1211-2647 BLK WR250F 07-10 13-50 520-114 48 1210-2601 GR WR250F 11-19 13-50 520-114 49 1210-2442 SC WR250F 20-23 13-51 520-114 49 1211-2578 BLU 49 1211-2648 BLK 50 1210-2443 SC 50 1211-2579 BLU KEY TO NOTES: AL = Aluminum. LW = Lightweight front. RB = Rubber cushioned. SC= Self-cleaning steel. ST = Steel. BLK = RaceLite black aluminum sprocket. BLU = RaceLite blue aluminum sprocket. GLD = RaceLite gold aluminum sprocket. GR = Twinstar, graphite T6 aluminum center with high carbon steel outer ring.Also available in blue (TWBLU), and gold (TWGD). ORG = RaceLite orange aluminum sprocket. RED = RaceLite red aluminum sprocket. JT SPROCKETS (CONT)
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