S&S Cycle 1999+ BT Adjustable Pushrod SetTo assure consistent valve train operation under all conditions, S&S adjustable pushrods are manufactured from rigid chromoly steel tubing. OEM pushrods may be cut to permit removal without rocker disassembly. These pushrods fit 1999 2016 HD big twin engines with stock, 4. 937" cylinders. 1984 1999 style pushrods covers required. You will need to remove the tappets blocks so you don't have to remove the rocker boxes. This Part Fits: Year Make Model