SUPERSPROX Stealth Rear Sprocket 49-Tooth Blue Yamaha RST-245-49-BLU

Supersprox-Stealth gives you longer system life without compromising weight, Steel teeth last 4 times longer than aluminum, Pound-for-pound, the strongest sprocket on the market, The aluminum core is 70% lighter than steel, Forging rivets into the sprockets provide exceptional strength, Designed for bikes up to 1400cc in displacement