Standard 4.2 inch bore piston kit with 3 pistons, pins, retainers, and rings

.020 Overbore piston kit with 3 pistons, pins, retainers, and rings

.030 Overbore piston kit with 3 pistons, retainers, pins, and rings

.040 Overbore piston kit with 3 pistons, retainers, pins, and rings