S&S Adjustable Pushrods for Harley Davidson 1999-2013 Twin Cam models Made of 7/16in. O.D. chrome moly steel tubing for strength and durability Includes 4 adjustable style steel pushrods Replaces stock, non-adjustable stock as well as high-performance applications Compatible with hydraulic and solid lifters Note: Requires 1984-99 Big Twin style pushrod covers