Icon Premium Forged Piston Set - 4.030" Bore - 1.2 x 1.2 x 3.0 mm Ring Groove - Minus 12.5 cc - GM LS-Series (Set of 8) H77715FXXL 1-3/4" Tube Diameter

1-3/4" Tube Diameter

AFR 305cc cylinder heads would be a great choice if your looking for big torque

1/4-28 in Thread to 10 mm x 1

040" and larger include a hollow nozzle screw

The FAST LSX/LSXR/LSXRT Fuel Rails feature a larger internal diameter that dampens the pulses and provides increased fuel volume

Icon Premium Forged Piston Set - 4.030" Bore - 1.2 x 1.2 x 3.0 mm Ring Groove - Minus 12.5 cc - GM LS-Series (Set of 8) H77715FXXL 1-3/4" Tube DiameterProduct Description: Piston Premium Forged Forged 4. 030 in Bore 1. 2 x 1. 2 x 3. 0 mm Ring Groove Minus 12. 50 cc GM LS Series Set of 8 Icon Pistons brings the same quality and performance you've come to expect from United Engine brands. ICON forgings are created at our in house facility, utilizing the latest innovations in piston forging technology. Each ICON piston is purpose built from the ground up for extreme high performance street or racing