4 Piston K-Series Pro All Motor Stroker Kit

4 Piston stroker kits offer the best parts available. Lightweight Callies Billet Crankshaft Ultra light weight 340 gram aluminum connecting rod, lighter and stronger than the competition Optional Saenz I-Beam Connecting Rod for Endurance application (we will pair this option with our 3-ring endurance piston) 260 gram strutted 16:1 pro stock piston Combine this stroker kit with 4 Piston CNC head and 4 Piston billet cams for a proven 400-430whp in street class trim and 450+hp in pro class trim.