piston88In most engine arrangements, including steam-powered engines, large stationary andor marine engines, this pin is located in a sliding crosshead that usually connects to the piston via a rod.. This pin is a forged small hollowDetails WISECO K24 BLOCK K20 HEAD 88MM BORE PISTON. Wiseco leads the performance aftermarket by producing the hhest quality forged pistons for domestic automobiles, sport compact and racing applications rht here in