S&S® adjustable pushrod conversion kit for 1984 -'99 HD® big twin. Kit include four adjustable steel pushrods. These pushrods can be used in place of the stock, non-adjustable pushrods in stock as well as high-performance applications and are made out of 7/16" O.D. chromoly steel tubing for strength and durability. Compatible with hydraulic and solid lifters. Fits engines with 4.889" cylinder length