The stock cast pistons on the Cruze (piston shown below the forged pistons in image) are notoriously weak, particularly at the ring lands which can fracture under the higher cylinder pressures when running over 21 psi of boost pressure. Upgrading to forged pistons provides increased strength to withstand much higher cylinder pressures. These pistons also feature reduced compression (9.0:1) which is more friendly for higher boost applications compared to the stock 9.5:1 compression pistons. These pistons also feature deeper reliefs for the intake and exhaust valves to allow more latitude in the cam timing and valve lift when using aftermarket valves.
This is a custom order part that typically requires 2-3 weeks to build prior to shipment.