The MotoSport.com Sunstar 525 Steel Sprocket And Chain Kit includes ONE Steel Countershaft (Front) Sprocket, ONE Steel Rear Sprocket, and your choice of ONE Premium Drive Chain, each with the following features: Sprockets / Chainwheels Included: Sunstar is the largest O.E.M. supplier of sprockets and brake rotors in the world. In fact, your motorcycle probably came from the factory with a Sunstar sprocket. Need a reason to choose Sunstar? Every Sunstar product is imbued with superior quality, uses an exclusive heat-treatment and quenching process, is based on advanced research and design, and is sold at an added value price. Sunstar Front Sprocket: Manufactured from case-hardened chromoly steel for the ultimate in strength and durability. "Parkerizing" surface treatment for rust and corrosion resistance. Sunstar Steel Rear Sprocket: