Piston - Power Pak - Forged - 4.155 in Bore - 1.0 mm x 1.0 mm x 2.0 mm Ring Grooves - Minus 9.00 cc - Small Block Chevy - Kit

Piston and Ring - PowerPak - Forged - 4.155 in Bore - 1.0 x 1.0 x 2.0 mm Ring Groove - Minus 20.00 cc - Small Block Chevy - Kit

Piston and Ring - PowerPak - Forged - 4.030 in Bore - 1.0 x 1.0 x 2.0 mm Ring Grooves - Minus 16.00 cc - Small Block Chevy - Kit

Piston and Ring - PowerPak - 4.030 in Bore - 1 mm / 1mm / 2 mm Ring Grooves - Minus 9.00 cc - Small Block Chevy - Kit

Piston and Ring - PowerPak - 4.040 in Bore - 1 mm / 1mm / 2 mm Ring Grooves - Minus 8.90 cc - Small Block Chevy - Kit

Piston and Ring - 21 Degree Flat Top - Forged - 4.050 in Bore - 1.0 x 1.0 x 2.0 mm Ring Grooves - Minus 8.90 cc - Small Block Chevy - Kit