Original 120 series pistons are much stronger than the new standard 150 pistons.
Standard Dual VVTi 4.0l V6 150 series pistons are much lighter and weaker and not much use when it comes to serious power increases.
Bullets custom Pistons and rods are the answer for your boosted Dual VVTi 4.0l V6, giving the ability to increase boost and power. These Pistons are great for anyone wanting some serious power increases for their FJ Cruiser, Toyota Prado or Middle East spec V6 Landcruiser.
Compression is dropped slightly from 10.4:1 to 9.9:1. Rods are forged steel 4340 , heat treated and shot peened. Have ARP bolts and are weighted at +/- 1 GRAM.
Pistons have floating pins and are custom CNC machined on the underside to reduce weight while increasing strength and crown thickness. These pistons are designed to fit the earlier 1GR fe engine as well but please be aware that early 1GR fe pistons will NOT fit the later engine.
(Pistons can be supplied with ceramic coated tops and Teflon skirts).