The rear sprocket is an in-house Stark designed component with a groove that expels excess mud, to minimize friction. The rear sprocket is made from 7075 T6 aluminum and has been optimized thanks to computer simulation to be as lightweight and strong as possible. It is integrated with Stark’s own hub design and is available in four sizes to tailor the VARG’s gearing to your riding style. Standard gearing: VARG MX: 14/47 VARG EX: 12/48 VARG SM: 15/47 Can be enlarged up to 49T. Important: Changing the front sprocket size affects the acceleration/top-speed balance: smaller sprockets provide quicker acceleration, while larger sprockets increase top speed. Changing the homologated sprocket size will void the road homologation of the Stark VARG EX or SM.