TST WORX 520 Lightweight Aluminum Rear Sprocket for Kawasaki Ninja 250R, Ninja 300, & More

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Features CNC machined from lightweight 7075-T6 aluminum alloy using advanced techniques Full sprocket treatment with Type III black anodized hard-coat for long-lasting durability Proprietary matte black anodized finish Proprietary tooth profile Ultra-smooth tooth transition geometry 58% lighter than the stock Kawasaki rear sprocket Available in various tooth counts Compatible Kawasaki model list located in the Spec tab Description Designed and built by race engineers in the TST WORX race program, our Lightweight Aluminum Rear Sprocket was developed with the harshest riding conditions in mind. Our use of the best materials and manufacturing procedures ensure practical longevity while maximizing weight loss for increased performance and power delivery. The blend of high-quality material, advanced hardening procedures, lightweight design, proprietary tooth profile, and ultra-smooth tooth transitions ensure exceptional performance even during the most demanding riding situations. We produce every TST WORX Rear Sprocket from 7075-T6 aluminum alloy. This high-quality material is CNC machined using a propriety holding plate process developed to eliminate vibration during the machining process and ensuring extreme precision and material integrity. We then treat the entire rear sprocket with a matte black Type III hard coat anodizing process that penetrates the aluminum and builds an ultra-hard surface layer, resulting in a light weight sprocket with exceptional durability characteristics capable of taking on the rigorous demands of the street and track. It's time to give your Kawasaki the sprocket and performance it deserves. Be sure to check the "Specs" tab for even more info on tooth count, sprocket weight, and fitment. Application Spec Sheet Model Years OEM Pitch OEM Front Sprocket OEM Rear Sprocket Chain Length Kawasaki Ninja 250R  2008 - 2012 520 14 45 106 Kawasaki Ninja 300 2013 - 2017 & 2026 520 14 42 106 Kawasaki Versys-X 300 2017 - Current 520 14 46 112 Kawasaki EX250 1988 - 2007 520 14 45 106 Kawasaki Ninja 500 2006 - 2009 520 16 41 104 Kawasaki ER500 2000 - 2005 520 17 42 106 WORX Rear Sprocket Weight Guide Sprocket Tooth Count Weight (ounces) 40 Teeth 7.97 ounces 41 Teeth 8.47 ounces 42 Teeth 8.82 ounces 44 Teeth 9.59 ounces 45 Teeth 10.09 ounces 46 Teeth 10.45 ounces 47 Teeth 10.87 ounces 48 Teeth 11.31 ounces