Chain & Sprocket Kit Contents: 13T Front Sprocket - SPF41613C 47T Rear Sprocket - SPR79847C 130 Link RK Chain - RKP428MXZX130 RK Kit Box - SPRKITBOX RK chain and sprocket kits are the perfect drive maintenance kit for your bike, including a strong and durable 14T front and 47T rear steel sprocket, constructed from SCM420 chromoly steel alloy (front) & C45 high carbon steel with a electroplated Zinc finish (rear) paired with a high-quality Heavy Duty RK chain this kit has everything you need to replace your old warped and stretched chain and sprockets. The perfect alternative to expensive OEM replacements while designed to meet and exceed OEM specifications. Supplied in presentable packaging with a carry handle for convenient transportation. About the Chain: RK offers the best O-ring chains in the industry. Constructed from hi-carbon alloy steel for strength and durability, with a pre-stressed and pre-stretched process applied to maximize the life of the chain. All RK O-ring seals are made from an advanced Nitrile Butadiene composite for maximum performance and wear life, while delivering smooth power with minimal O-ring drag or loss of horsepower. Fits: Suzuki RM80 1982-2001 RM80 Big wheel 1983-1986 RM85 Small Wheel 2002-2021 Yamaha YZ80 1982-2001 YZ80 Big wheel 1999-2001