FANTIC XX XE 125 250 300 XXF XEF 250 310 450 2021-2025 AS3 FACTORY SERIES REAR SPROCKET 520 51T RED year-1999 2006-2012 Yamaha FZ1 N Fazer

2006-2012 Yamaha FZ1 N Fazer

2005-2026 KTM 250 SX-F

2014-2024 Sherco SE-F 300 R Factory

2006-2020 TM MX 450 Fi

2019-2020 Kawasaki KX 250 F (BKF-BLF models)

FANTIC XX XE 125 250 300 XXF XEF 250 310 450 2021-2025 AS3 FACTORY SERIES REAR SPROCKET 520 51T RED year-1999 2006-2012 Yamaha FZ1 N FazerAS3 Performance Factory Series rear sprockets combine the strength of steel and the light weight of aluminium to give you the ultimate hard wearing rear sprocket. The outer ring is manufactured from hardened steel with a nickel coating and will outlast an aluminium sprocket by up to 3 times. The inner ring is constructed from aircraft grade 7075 T6 aluminium and is up to 50% lighter than a standard steel sprocket. Details Teeth: 51 Chain: 520 Will Fit