Yamaha Rear Sprockets Sprocket Size:56 Lab tests show that a

Lab tests show that a Quadra-X Ring chain can last from 1 1/2 to 2 times longer than a standard O-Ring chain

The Superlite RS7 Series rear sprocket is the #1 selling steel racing sprocket on the market today

QX-ring which is 40% less friction compared to an O-ring chain

Complete Chain and Sprocket Kit

What this means is that your chain will fit the sprocket better and everything will last longer

Yamaha Rear Sprockets Sprocket Size:56 Lab tests show that aAll ProSeries Sprockets are Made in the USA from the harder grade 7075 T6 certified aero space industry aluminum for long life and light weight. They are machined to exact specs with tolerances much more stringent than other aluminum sprockets and many times tighter than OE sprockets. What this means is that your chain will fit the sprocket better and everything will last longer. Additionally, they are chemically etched to give them a uniform, even