50mm rear axle for Compkart Covert 3.0 and Compkart 4R racing chassis. Standard length = 1030mm
With the Compkart chassis, softer axles provide higher grip, and stiffer axles reduce rear grip. During rain or very low grip conditions, softer axles are generally preferred. As grip increases and rubber accumulates, try moving towards stiffer axles, or try a cut down axle (1010mm).