The MotoSport.com Pro Taper Chain And Sprocket Kit includes ONE Steel Countershaft (Front) Sprocket, ONE Aluminum Rear Sprocket, and your choice of ONE Premium Drive Chain, each with the following features: Sprockets / Chainwheels Included: MX Front Sprocket: Durable, lightweight front sprockets that are designed specifically to outlast and out-perform the competition. All of Pro Taper's sprockets are available for most make and model dirtbikes. Precision broached and machined to the strictest standards. Case-hardened chromoly steel. Lightening holes keep sprocket lightweight. Self-cleaning mud grooves prevent dirt build up. Special coating helps retain strength and aids in wear resistance.