GM/HOLDEN LS1/2/3/6 4.125" BORE J221180. JE Pistons' newest FSR slipper forging design allows for the use of the most popular stroke and rod combinations while eliminating reluctor wheel clearance problems. These pistons are lightweight and extremely durable. They're machined for 1.5, 1.5, 3.0mm rings and have an inverted dome design to achieve an optimum compression ratio with forced induction applications. Chev/Holden LS1/LS2/LS6 series V8 C.I.D: 427. Bore (in):4.125 in. Bore (mm):104.775mm. Piston Style:Dish, with two valve reliefs. Piston Material:Forged aluminum. Compression Distance (in):1.115 in. Piston Head Volume (cc):+29.00cc. Wrist Pin Style:Press-fit or floating. Pin Diameter (in):0.927 in. Piston Ring Thickness:1.50mm x 1.50mm x 3.00mm. Quantity:Sold as a set of 8. Notes:Oil rail support included.Notes: Includes Pin,Wire locks, Smooth Finished Crown, Accumulator Grooves, Contact Reduction Grooves
