Chain & Sprocket Kit Contents: 15T Front Sprocket - SPF49015C 39T Rear Sprocket - SPR102739C 100 Link RK Chain - RKPGB520GXWX100 RK Kit Box - SPRKITBOX RK chain and sprocket kits are the perfect drive maintenance kit for your bike, including a strong and durable 15T front and 39T 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 XW-ring 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 GXW series is designed to be the top of the line performance chain for Superbike, Road and Endurance Racing. The GXW is lightweight while maintaining a high tensile strength with maximum durability. RK's XW-Ring technology remarkably improves the chain life and lowers friction. Perfect for both race and road use providing as far as 20,000km of use while retaining its high-performance nature. Fits: Ducati 800SS 2003-2007 851 1989-1992 851 BIPOSTO 1990 MONSTER 900 1993-1999 MONSTER 900 ie 2000-2001