These Xtreme Upgrade boxed chain & sprocket kits offer the best of the best, but application selection a lot easier as you only need to order one item instead of three individually. The Xtreme Upgrade kits contain the highest possible specification RK chain for the applicaiton and will be significantly better than the OE chain, with high quality Afam steel sprockets. All boxed kits are supplied as standard gearing configuration.Upgrade spec chain and Afam sprockets provide strength and reassurance.Kits include bike specific front and rear sprockets and an open ended drive chain.Cost effective option to buying all items separately.Suitable for a wide range of motorcycles on the road today these kits provide the rider with a quality option rather than buying the costly OE alternative.The chain supplied is a bike specific chain and will be one of the following spec chains:Heavy Duty HSB Gold Roller Chain Increased strength compared to the standard chains. Manufactured from carbon alloy