Mahle Forged Inverted Dome Pistons 4.125 Bore, Cevilte 77, LS7, Corvette C6 Z06, 7.0L

Mahle GM LS PowerPak Piston & Ring Kit

Chevy LS7, Bore 4.125, Stroke 4.000, Rod Length 6.125, Inverted Dome -25cc, 444 Grams, Set of 8, New updated part supeceded from LS7105125I25 offers improved strenght and power handling using new Alloy.

The Mahle PowerPak was designed as a completely finished drop in piston assembly. Other then filling the included performance ring set, everything is done for you. Designed from 80+ years of piston manufacturing for everything from OEM to Formula1, only the best technology is used to make these pistons. They are forged from 4032 low expansion aluminum alloy for high strength and reduced piston to wall clearance. Forced Pin Oiling is used for increased wrist pin lubrication. Pin bores are CNC precision machined. .927" High Quality Steel Wrist Pin (118g), Performance 0.43", 1.5, 3.0mm rings, and Race Proven Round Wire Locks are included.

    Compression Ratio with 64cc Heads 12.2:1.