BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | OFFROAD SPROCKETS SPROCKETS 660 FITS MODEL STOCK GEARING STOCK CHAIN FRONT SIZE PART # NOTES REAR SIZE PART # NOTES YAMAHA (CONT) DT100 74-76 14-49 428-112 12 1212-0215 - - 13 JTF1263-13 14 JTF1263-14 15 JTF1263-15 16 JTF1263-16 DT100 77-83 14-45 420-102 12 JTF546-12 32 JTR834-32 ST 13 JTF546-13 35 1210-0660 ST 14 JTF546-14 45 JTR834-45 ST 15 JTF546-15 48 JTR834-48 ST LT2 72 14-49 428-112 12 1212-0215 - - LT2M 72 14-49 428-112 13 JTF1263-13 LT3 73 14-49 428-112 14 JTF1263-14 LTMX 73 14-49 428-112 15 JTF1263-15 MX100 74-78 14-52 428-110 16 JTF1263-16 14 JTF1263-14 MX100 79-83 14-48 420-104 12 JTF546-12 32 JTR834-32 ST RT100 90/92-00 14-48 420-104 13 JTF546-13 35 1210-0660 ST 14 JTF546-14 45 JTR834-45 ST 15 JTF546-15 48 JTR834-48 ST YZ100 76-77 12-40 520-90 12 JTF422-12 47 JTR845-47 ST YZ100 78-79 12-43 520-98 13 JTF422-13 YZ100 80-81 12-45 520-100 14 JTF422-14 YZ100 82-83 12-50 520-106 12 JTF422-12 40 1211-2602 BLK 13 JTF422-13 44 JTR853-44 ST 14 JTF422-14 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 TT-R110 08-23 14-35 420-90 14 JTF546-14 - - AT1 69 15-45 428-112 12 1212-0215 44 1210-2689 ST AT1 70-71 14-45 428-112 13 JTF1263-13 45 JTR1842-45 ST AT2 72 14-45 428-112 14 JTF1263-14 47 JTR1842-47 ST AT3 73 14-45 428-112 15 JTF1263-15 49 JTR1842-49 ST AT1M 70 14-45 428-112 16 JTF1263-16 50 JTR1842-50 ST AT-MX 73 14-45 428-112 51 JTR1842-51 ST AT-1MX 71 14-45 428-112 52 1210-0418 ST AT2M 72 14-45 428-112 54 JTR1842-54 ST DT125 74-75 14-45 428-112 DT125 76 15-45 428-114 DT125 78 15-49 428-118 DT125 78-80 14-49 428-118 IT125 80-81 12-46 520-100 12 JTF422-12 47 JTR845-47 ST 13 JTF422-13 14 JTF422-14 MX125 74-75 15-47 428-112 12 1212-0215 - - MX125 74-76 14-45 428-114 13 JTF1263-13 14 JTF1263-14 15 JTF1263-15 16 JTF1263-16 TT-R125 00-01 13-49 428-116 13 1212-0121 49 1212-0120 ST TT-R125 LW 00-01 13-54 428-116 14 1212-0789 ST 54 1210-1437 ST TT-R125 02-09 13-49 428-116 13 1212-0121 49 1212-0113 ST TT-R125 LW 02-23 13-54 428-122 14 1212-0789 ST 54 1212-0114 ST FITS MODEL STOCK GEARING STOCK CHAIN FRONT SIZE PART # NOTES REAR SIZE PART # NOTES YAMAHA (CONT) XT125 82-83 14-54 428-120 12 1212-0215 44 1210-2689 ST 13 JTF1263-13 45 JTR1842-45 ST 14 JTF1263-14 47 JTR1842-47 ST 15 JTF1263-15 49 JTR1842-49 ST 16 JTF1263-16 50 JTR1842-50 ST 51 JTR1842-51 ST 52 1210-0418 ST 54 JTR1842-54 ST 55 JTR1842-55 ST YZ125 74-75 14-47 428-112 12 1212-0215 - - YZ125C 76 14-45 428-112 13 JTF1263-13 14 JTF1263-14 15 JTF1263-15 16 JTF1263-16 YZ125X 76 12-46 520-98 12 JTF422-12 47 JTR845-47 ST YZ125 77-79 12-51 520-104 13 JTF422-13 14 JTF422-14 YZ125 80 12-48 520-102 12 JTF422-12 40 1211-2602 BLK YZ125 81-82 12-46 520-104 13 JTF422-13 44 JTR853-44 ST YZ125 83-84 12-48 520-110 14 JTF422-14 44 1211-2603 BLK YZ125 85 12-52 520-114 45 JTR853-45 ST YZ125 86 13-50 520-112 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 YZ125 87 13-50 520-112 12 JTF564-12 40 1211-2602 BLK YZ125 88 13-49 520-112 13 JTF564-13 44 JTR853-44 ST YZ125 89-92 13-51 520-116 14 1212-2001 ST 44 1211-2603 BLK YZ125 93 13-50 520-116 45 JTR853-45 ST YZ125 94-96 13-50 520-116 46 JTR853-46 ST YZ125 97-98 13-48 520-112 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 YZ125 99-01 13-48 520-112 12 JTF564-12 46 1210-2408 ST YZ125 02-04 13-49 520-112 13 JTF564-13 47 1210-1550 ST 14 1212-2001 ST 48 1210-2441 SC 48 1211-2647 BLK 48 1210-2601 GR 49 1211-2577 BLU 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 50 1210-2806 TWBLU 51 1210-2444 SC 51 1211-2580 BLU 51 1211-2650 BLK 52 1211-2581 BLU 52 1211-2651 BLK 52 1210-2807 TWGD 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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