This kit replaces the DU bushing and mounting hardware on your rear shock. The needle bearing hardware kit reduces friction, keeping your suspension feel as smooth as possible. This kit includes ONE needle hardware set. TWO sets are needed to outfit the upper and lower shock eyelets on your Evil. The mounting span is 21.85mm, and includes extra + and ++ inner spanners to fine tune fitment. Fits all current Evil bikes, including the Following, Insurgent, and Wreckoning.