323U-520-15P
Front sprockets made from case-hardened, core-refined nickel-chrome-molybdenum alloy steel for the ultimate combination of strength and hardness
Fitment data lists this product for 27 model-year applications, including Yamaha FZR1000, Yamaha YZF R6, and Yamaha YZF R7, with listed model years from 1987 through 2015.