The KA24DE kit utilizes premium steel billet connecting rods. As usual, each BC kit features custom CP pistons, wrist pins, full ring pack and buttons. Here is the answer to big time horsepower and torque gains. Note: STROKER KIT - Nissan KA24DE - 102mm Stroke Billet Crank, bRODS w/ARP2000 (6.495"), Custom Pistons Specs: