The MotoSport.com Sunstar Chain Aluminum Sprocket Kit includes ONE Steel Countershaft (Front) Sprocket, ONE Aluminum Rear Sprocket, and your choice of ONE Premium 428 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 428: Manufactured from case-hardened chromoly steel for the ultimate in strength and durability. "Parkerizing" surface treatment for rust and corrosion resistance. Sunstar Aluminum Rear Sprocket 428: Constructed of high quality, aerospace grade 7075 T-6 aluminum. Computer designed weight reduction holes for lightness. Exclusive tooth-valley design provides 24% better chain contact area for the best power transfer possible. A hard anodized coating is applied to provide a super durable finish to an already great sprocket. Your Choice of Drive Chain: D.I.D 428 Standard Chain - 120 Links: The D.I.D Standard Non-O-Ring Chain is designed for low horsepower, smaller displacement mopeds, scooters and vintage motorcycles. For machines originally equipped with non-O-ring chains. Solid rollers. Shot-peened parts. High cylindrical and roundness accuracy. Exacting tolerances provide low friction. Pre-stretched. Special alloy steel with extended riveted bushing "anti-kink" design. Highest quality non-O-ring chain in overall combined performance. Average tensile strength of 4,480 pounds. Wear life index: 100. Includes clip-style master link. 120 links. Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use. D.I.D 428 NZ Gold Chain - 120 or 136 Links: Pinning your bike out of every turn might tear apart the stock chain, but D.I.D and their 428NZ chain will not let you, or your race for first, down. For machines originally equipped with non-O-ring chains. Solid rollers. Shot-peened parts. High cylindrical and roundness accuracy. Exacting tolerances provide low friction. SDH pin treatment - hard chromium-carbide layer formed on pin surface for exceptional strength and wear resistance. Pre-stretched. Special alloy steel with extended riveted bushing "anti-kink" design. Highest quality non-O-ring chain in overall combined performance. Up to 19% higher tensile strength; average tensile strength of 5,740 pounds. Wear life index: 410. Weight (per 100 links): 2.20 pounds. Includes a clip-style master link. 120 or 136 links. Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use. Renthal 428 R1 Chain - 120 or 130 Links: Renthals R1 Works Chain is a high-strength non O-ring chain with excellent impact load resistance designed specifically to withstand the stress found in off-road applications. This chain is the choice where a combination of high strength, light weight and maximum power transfer are important considerations. Shot-peened alloy steel side plates for high tensile strength and maximum impact load resistance. Chamfered inner links to reduce the chance of chain derailment. Extended bushings to reduce friction between outer and inner link plates, maximizing power output. Chromized bearing pins for excellent resistance to wear. Gold color side plates help prevent corrosion. Most perfectly matched chain for Renthal sprockets allowing maximum power at the rear wheel. This also extends the life of both the chain and sprockets. Average tensile strength of 4,609 pounds. Maximum displacement (street / off-road): N/A / 150cc. Each chain includes master link and a pair of latex gloves for mess free installation. 120 or 130 links. Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use. Sunstar 428 MXR1 Works MX Racing Chain - 134 Links: Sunstars MXR1 Works MX / SX / Off-Road race chain (MXR = Motocross Xtreme Racing) is a premium quality, highly durable non-sealed chain specifically designed for Motocross, Supercross and/or off-road racing. Featuring Sunstars oversized TripleStar treated ultra hard pins and 100% heat treated components, the MXR1 chain is constructed to handle the demands of the highest levels of racing. This is also one of the lightest MX chains on the market thanks to its superlight design - the 520MXR1 120 link version weighs less than 3.6 pounds, yet is super strong with an 8,970-pound tensile strength rating. Its combination of strength, durability and light weight make it the top choice for serious racers. Deep gold side plates and gold inner plates. Super strong and lightweight design for high performance / racing mini off-road and motocross machines. Utilizes TST (TripleStar Treated) ultra-hard pins and 100% heat treated components for high strength and durability. Seamless rollers and bushings help provide the added life and durability. Average tensile strength of 5,780 pounds. Maximum rated displacement (street / off-road): 250cc / 150cc. Weight (per 100 links): 2.13 pounds. Includes clip-style master link. 134 links. Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use. Note: Image is for reference ONLY, actual product will vary based on fitment and selection.