Piston and Ring - PowerPak - Forged - 3.905 in Bore - 1.0 x 1.0 x 2.0 mm Ring Groove - Minus 4.00 cc - GM LS-Series - Kit

Piston and Ring - PowerPak - Forged - 3.908 in Bore - 1.0 x 1.0 x 2.0 mm Ring Groove - Minus 4.00 cc - GM LS-Series - Kit

Piston and Ring - PowerPak - Forged - 4.000 in Bore - 1.0 x 1.0 x 2.0 mm Ring Grooves - Minus 5.80 cc - GM LS-Series - Kit

Piston and Ring - PowerPak - Forged - 4.010 in Bore - 1.0 x 1.0 x 2.0 mm Ring Groove - Minus 4.00 cc - GM LS-Series - Kit

Piston and Ring - PowerPak - Forged - 4.010 in Bore - 1.0 x 1.0 x 2.0 mm Ring Groove - Minus 4.00 cc - GM LS-Series - Kit

Piston and Ring - PowerPak - Forged - 4.065 in Bore - 1.0 x 1.0 x 2.0 mm Ring Groove - Minus 4.00 cc - GM LS-Series - Kit