Chain & Sprocket Kit Contents: 13T Front Sprocket - SPF71013C 50T Rear Sprocket - SPR83850C 124 Link RK Chain - RKP428HX124 RK Kit Box - SPRKITBOX RK chain and sprocket kits are the perfect drive maintenance kit for your bike, including a strong and durable 13T front and 50T 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's reliable non-sealed economical chain for heavy duty use, manufactured from carbon alloy steel, heat-treated and shot-peened for maximum strength and durability compared to standard chains. All RK chains are pre-stressed and pre-stretched for superior performance and minimizes elongation throughout the life of the chain. The best quality and cost performance combination for heavy duty motorcycle applications. Fits: Yamaha AG125 2017-2022