Piston and Ring - PowerPak - Forged - 4.060 in Bore - 1.0 x 1.0 x 2.0 mm Ring Groove - Minus 4.00 cc - Small Block Chevy - Kit

Piston and Ring - PowerPak - Flat Top - Forged - 4.060 in Bore - 1.0 x 1.0 x 2.0 mm Ring Grooves - Minus 2.40 cc - Small Block Chevy - Kit

Piston and Ring - PowerPak Flat Top - Forged - 4.065 in Bore - 1.0 x 1.0 x 2.0 mm Ring Grooves - Minus 8.90 cc - Small Block Chevy - Kit

Piston and Ring - PowerPak - Forged - 4.125 in Bore - 1.0 x 1.0 x 2.0 mm Ring Groove - Minus 5.00 cc - Small Block Chevy - Kit

Piston and Ring - PowerPak - Forged - 4.125 in Bore - 1.0 x 1.0 x 2.0 mm Ring Groove - Plus 11.10 cc - Small Block Chevy - Kit

Piston and Ring - PowerPak - Forged - 4.125 in Bore - 1.0 x 1.0 x 2.0 mm Ring Groove - Plus 4.00 cc - Small Block Chevy - Kit