RK - Yamaha YZ250F Chain & Sprocket Kit

Included in this value-packed kit is the new breed of quality RK Advanced heat treated front steel sprocket manufactured using SCM-415 alloy steel. The front sprocket is precisely machined for enhanced power delivery and efficiency and the Carburizing Heat Treatment is designed to create extremely hard teeth for maximum durability.
The rear Edge Cut lightweight RK rear alloy sprocket is made from 7075–T6 European aircraft aluminium. These sprockets are CNC machined, with self-cleaning mud-groves and finished in hard anodizing to give that lasting wear advantage and professional look.
The chain is a quality gold RK KZU Series sealed 'U' ring chain which is the ideal choice for the serious rider or racer. The chain is a lightweight heavy duty race chain, featuring the ultra-thin 'U' ring which allows for improved power transfer via reduced friction. It also has greatly improved heat resistance and anti-abrasion properties.
Topping it all of is a set of States MX rear sprocket tapered bolts and nuts.