Driven Racing 520 Pitch Aluminum Rear Sprocket '15-'20 Yamaha R1/M, '99-'02 R6

Each sprocket is machined from 7075-T6 alloy these sprockets are ultra light using lightening holes as well as lowered front surface to achieve one of the strongest and lightest sprockets on the market today. They're then stage 2 anodized in either black, blue, gold, or red. 

Note: This item will not fit the R1S