BOLD MAGENTA part numbers are new for 2023 PARTS-UNLIMITED.COM 2023 | OFFROAD 2023 NEW PRODUCTS NP77 JT SPROCKETS • Computer-designed to achieve ultimate strength at minimum weight • JT combines leading-edge technology with top materials to produce the ultimate quality sprocket range with unbeatable value • Every sprocket meets or exceeds the highest possible quality standards set for the motorcycle industry • Sprockets are heat-treated and bead-blasted to reduce material surface tension • Unless noted, front sprockets are made with C45 steel and SCM415 chromoly steel alloy; rear sprockets made with top-quality-grade C45 high-carbon steel • Lightweight front sprockets available for some applications as noted • See pages 558-593 of the 2023 Parts Unlimited Offroad catalog for the entire line of JT Sprockets RUBBER CUSHIONED FRONT SPROCKETS “RB” • Used by the major Japanese motorcycle manufacturers since early 1990's to dampen the chain impact on the teeth of the front sprocket • These same sprockets are now available to the aftermarket • Quality, design and OEM proven technology are the same as what is supplied to the motorcycle manufacturers FITS MODEL STOCK GEARING STOCK CHAIN FRONT SIZE PART # NOTES REAR SIZE PART # NOTES APRILIA 450 MXV 10-12 14-49 520-112 - - 46 1210-0646 ST 450 RXV 06-12 15-48 520-112 48 1210-0647 ST 450 SXV 06-12 15-46 520-112 550 RXV 06-12 15-48 520-112 550 SXV 06-12 15-46 520-112 BETA 350RR 12 13-50 520-114 11 1212-1152 ST 51 1210-0765 ST 400RR 10-12 13-50 520-114 13 1212-1954 ST 450RR 10-12 13-50 520-112 14 1212-1955 ST 498 RR 12 13-50 520-112 15 1212-0222 ST 520RR 10-11 13-50 520-112 16 1212-1153 SC GAS GAS 65 MC 21-23 14-48 420-112 15 1212-1209 ST 48 1210-1341 ST 85 MC 21-23 13-49 428-124 13 1212-1956 ST - - 14 1212-1957 ST 125EC/XC 03-11 13-48 520-112 14 1212-2001 ST 51 1210-0765 ST 250EC/XC 00-11 13-47 520-114 13 1212-0605 51 1210-0765 ST 300EC/XC 00-11 13-47 520-114 13 1212-0605 51 1210-0765 ST SM400 03-04 13-42 520-112 13 1212-0605 51 1210-0765 ST SM450 03-04 13-42 520-112 13 1212-0605 51 1210-0765 ST HONDA Z50A 69-78 12-37 420-76 - - 39 1210-2714 ST Z50R 79-81 12-37 420-76 Z50R 82-87 13-37 420-76 Z50R 88-99 14-37 420-76 Z50RD 86, 92-93 CT70 69-71 15-38 420-88 12 1212-0557 ST 33 1210-2701 ST CT70H 70-72 14-45 420-92 CT70 91-94 15-35 420-86 SL70 71-72 13-44 420-96 XL70 74-76 13-44 420-96 XL75 77-79 14-36 420-94 - - 33 1210-2701 ST XR75 73-76 14-44 420-100 XR75 77-78 14-46 420-100 XL80S 80-85 15-37 420-96 12 1212-0557 ST 33 1210-2701 ST XR80 79-84 14-46 420-100 - - 33 1210-2701 ST CRF100F 04-13/ XR100R 85-03 14-50 428-118 13 1212-1962 ST 49 1210-1441 ST CR125 RZ 79 13-51 520-110 13 1212-1958 ST - - CR125 RA,RB 80-81 13-51 520-110 14 1212-1959 ST CR125 RC 82 13-51 520-112 CR125 RD,RE 83-84 CR125 RF 85 FITS MODEL STOCK GEARING STOCK CHAIN FRONT SIZE PART # NOTES REAR SIZE PART # NOTES HONDA (CONT) CRF125F 14-23 13-46 428-112 14 1212-0933 ST 49 1210-1441 ST CRF125FB 15-23 13-49 428-112 XR200R 84-85 13-50 520-108 - - 41 1210-2697 ST XR200R 86-03 13-47 520-108 42 1210-2698 ST 44 1210-0720 ST 51 1210-2699 ST CRF230L 08-09 13-39 520-100 15 1212-1967 ST - - CRF230M 09-10 13-38 520-100 TLR250 85-87 10-39 520-96 13 1212-1938 ST - - 14 1212-1939 ST CR250R 88-91 14-51 520-116 13 1212-1965 ST - - CR250R 92-93 13-49 520-112 14 1212-1966 ST CR250R 94-95 13-49 520-114 CR250R 96-01 13-50 520-114 CR250R 02-05 13-48 520-114 CR250R 06-07 13-50 520-114 CRF250L 13-14 14-40 520-114 - - 39 1210-1448 ST 40 1210-1336 ST XL250S 78-81 14-53 520-102 12 1212-1935 ST 41 1210-2697 ST 13 1212-1289 ST 42 1210-2698 ST 15 1212-1288 ST 44 1210-0720 ST 51 1210-2699 ST XL250R 82-83 14-47 520-102 16 1212-1964 ST 41 1210-2697 ST 42 1210-2698 ST 44 1210-0720 ST 51 1210-2699 ST XR250 79-80 13-53 520-102 12 1212-1935 ST 41 1210-2697 ST XR250R 81 13-53 520-106 13 1212-1289 ST 42 1210-2698 ST XR250R 82-83 13-53 520-104 15 1212-1288 ST 44 1210-0720 ST 51 1210-2699 ST XR250R 90-95 13-48 520-108 15 1212-0571 ST 39 1210-1448 ST 11 1212-1316 ST 40 1210-1336 ST XL350R 84-85 14-40 520-102 15 1212-1967 ST - - XR350R 83-84 14-42 520-104 XR350R 85 14-42 520-106 12 1212-1941 ST 41 1210-2697 ST 42 1210-2698 ST 44 1210-0720 ST 51 1210-2699 ST CRF450R 02-03 13-50 520-114 13 1212-1965 ST - - CRF450R 04-08 13-48 520-114 14 1212-1966 ST CRF450R 09-18 13-48 520-116 CRF450R 19-23 13-49 520-114 CRF450X 05-18 13-51 520-114 SELF-CLEANING SPROCKETS “SC” • Manufactured with self-cleaning grooves for added life and performance • Made of stainless steel NOTE: When installing sprockets which differ from OEM sizes, check for proper clearances before operating. KEY TO NOTES: ST = Steel. RB = Rubber cushioned. SC = Self-cleaning steel.
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