2021 Parts Unlimited Offroad

SPROCKETS parts-unlimited.com 2021 PARTS UNLIMITED OFFROAD BOLD MAGENTA part numbers are new for 2021 504 Countershaft Sprockets Steel and Aluminum Rear Sprockets SPROCKETS ALUMINUM WORKS TRIPLESTAR REAR SPROCKETS • Sunstar is the largest OEM and aftermarket supplier of motorcycle and ARV sprockets in the manufacturing world for every major Japanese motorcycle builder since 1946 • Constructed of high-quality, aerospace grade 7075 T-6 aluminum • Computer-designed weight reduction holes for the best combination of lightness, strength and stability • Exclusive tooth-valley design provides 50% better chain contact area for the best power transfer possible • Hard anodized coating for added durability and a superb finish • Cleaning grooves added at bottom of tooth area STEEL OEM REPLACEMENT REAR SPROCKETS • Constructed of the highest quality 1045 high-carbon steel • Exclusive heat treatment and quenching process for strength and durability • The strongest, longest lasting steel replacement sprocket available POWERDRIVE COUNTERSHAFT SPROCKETS • Manufactured from case-hardened chromoly steel for unparalleled strength and durability • Parkerizing surface treatment prohibits rust and corrosion, building resistance against those agents, resulting in a longer lasting, better appearance • Most race applications feature drilled weight-reduction holes (depends on application/​tooth size) • Constructed of the same great quality and specifications that the Japanese OEMs have trusted and used since 1946 FITS MODEL STOCK GEARING STOCK CHAIN FRONT SIZE PART # REAR SIZE PART # SPROCKET TYPE BETA RR250 05‑09 14‑52 520‑ 12 1212-0263 42 2-363142 (Steel) RR250 2T 13‑19 13‑49 520‑ 13 35713 43 2-363143 (Steel) RR350 12 13‑50 520‑114 14 35714 45 1210-0958 (Steel) RR350 13‑14 13‑49 520‑ 15 1212-0742 47 2-363147 (Steel) RR400 05‑09 14‑52 520‑114 48 1210-0959 (Steel) RR400 10‑12 13‑50 520‑114 48 1211-1979 (Works/​ Black) RR400 13‑14 13‑49 520‑ 49 1211-1980 (Works/​ Black) RR450 05‑09 14‑52 520‑114 50 1211-1981 (Works/​ Black) RR450 10‑12 13‑48 520‑112 50 1210-0960 (Steel) RR450 13‑14 13‑49 520‑ 51 1211-1982 (Works/​ Black) RR498 12 13‑48 520‑112 52 1210-0962 (Steel) RR498 13‑14 13‑49 520‑ RR520 10‑11 13‑48 520‑112 RR525 05‑09 14‑50 520‑ GAS GAS EC125 03‑11 13‑48 520‑112 ‑ - 42 2-363142 (Steel) Enduro 125 00‑02 13‑52 520‑118 43 2-363143 (Steel) EC200 00‑02 13‑51 520‑116 45 1210-0958 (Steel) EC200 03‑11 13‑51 520‑114 47 2-363147 (Steel) EC250 00 13‑47 520‑114 48 1210-0959 (Steel) EC250 01‑15 13‑48 520‑112 50 1210-0960 (Steel) EC300 00 13‑47 520‑114 52 1210-0962 (Steel) EC300 01‑11 13‑48 520‑114 EC400 FSE 00 13‑48 520‑116 SM400 FSE 03‑04 13‑42 520‑112 EC450 FSE 03‑10 13‑48 520‑116 SM450 FSE 03‑05 13‑42 520‑112 FITS MODEL STOCK GEARING STOCK CHAIN FRONT SIZE PART # REAR SIZE PART # SPROCKET TYPE GAS GAS (CONT) EC250F 12 13‑50 520‑ 12 38812 42 2-363142 (Steel) EC250F 13‑15 13‑48 520‑ 13 38813 43 2-363143 (Steel) EC300F 13‑15 13‑48 520‑ 14 38814 45 1210-0958 (Steel) 47 2-363147 (Steel) 48 1210-0959 (Steel) 50 1210-0960 (Steel) 52 1210-0962 (Steel) HONDA XR50R 00‑03 14‑37 420‑78 14 10714 35 1211-0130 (Works/​Gold) CRF50F 04‑21 14‑37 420‑78 15 10715 37 1210-0169 (Steel) 39 1211-0132 (Works/​Gold) Z50A Mini Trail 69‑71 13‑34 420‑74 ‑ - 37 2-100337 (Steel) Z50A Mini Trail 72‑78 12‑37 420‑76 Z50R 79‑81 12‑37 420‑76 Z50R 82‑87 13‑37 420‑76 13 10213 37 2-100337 (Steel) Z50RD 86 14 10214 15 10215 Z50R 88‑99 14‑37 420‑76 13 10213 37 2-100837 (Steel) 14 10214 15 10215 ZB50 88 15‑37 420‑100 13 10213 35 2-102235 (Steel) 14 10214 36 2-102236 (Steel) 15 10215 38 2-102238 (Steel) 44 2-102244 (Steel) 46 2-102246 (Steel)