GM LS Forged Aluminum Dome Piston Kit  w/Rings 3.780 in. Bore, 3.622 in. Stroke [5.3L LSX]
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WISECOPART NUMBER: 926-K0042XS

GM LS Forged Aluminum Dome Piston Kit w/Rings 3.780 in. Bore, 3.622 in. Stroke [5.3L LSX]

$1,10699
ShippingShips on 10/26/2026
Lowest PriceLowest Price Guarantee

Chevy LS Series
  • 3.622" Standard Stroke
  • Nitrous/Turbo
    GM LS Forged Aluminum Dome Piston Kit
  • 5.3L LSX Engine
  • Bore: 3.780 in. (STD)
  • Head Type: Dome w/2 Valve Reliefs (-10.7 cc)
  • Comp. Height: 1.321 in.
  • Ring Grooves: 1.0 mm, 1.2 mm, 2.8 mm
  • Includes Rings
  • Set of 8

    Wiseco K0042XS GM LS Forged Aluminum Dome Piston Kit

    • Bore Diameter: 3.780 in.
    • Compression Height: 1.321 in.
    • Forging Type: Strutted
    • Oil Ring Thickness: 2.8 mm
    • Piston Material: 2618
    • Piston Pin Included: Yes
    • Piston Pin Material: 52100
    • Piston Volume: -10.70 cc
    • Product Series: Professional
    • Product Types: Piston Kits
    • Ringset Included: Yes
    • Second Compression Ring Thickness: 1.2 mm
    • Skirt Coating: Y
    • Top Compression Ring Thickness: 1.0 mm
    • Wrist Pin Diameter: 0.945 in.
    • Wrist Pin Style: Floating
  • Championship winning performance built with input from today's top engine builders. Wiseco Professional Series Pistons will get you there first.

    Wiseco Domestic Automotive Forged Pistons feature dedicated forgings, specially designed valve pockets, unique dome and crown designs, optimized skirt profiles and precision machined ring grooves. Other features such as dome brushing, ArmorGlide skirt coatings, gas ports, and advanced ring packages will be found on many of these pistons. Additionally, valve pocket designs that allow maximum flow around valve, also allowing oversized valves and high lift cams to be utilized, piston crown shapes designed to promote maximum intake charge, efficiency through scavenging mixture "Cross Flow" during intake and exhaust valve overlap.

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    More fuel and air equals more horsepower! Piston domes are designed for optimal quench during the compression/combustion cycle, resulting in resistance to detonation and preignition. The end result is longer engine life and increased horsepower potential. Precision machined ring grooves with proper orifice/accumulator volume feature calculated groove root diameters and axial widths, providing excellent surface finish and flatness, maximum ring seal and minimized blow-by and oil consumption. World class, ISO certified forging facility that utilizes the latest technologies featuring complex forged shapes, advanced materials, and feature aligned grain flow technology. Complex Piston skirt profiles that reduce power robbing friction, yet promote stability in the bore for optimum ring seal.

    Features:

    • 4032 or 2618 extruded material forged for maximum strength.
    • Precision tolerance CNC machining for quality, repeatability and performance.
    • Crown thickness and ring lands designed for power-adders, such as: Force induction (turbos & blowers), and nitrous oxide.
    • Wrist Pins constructed of chrome moly steel material for the ultimate in strength.
    • Precision pin bore finish for a high tolerance fit between piston pin and piston.
    • Spirolox® featuring chrome silicon material for the ultimate yield strength.
    • All pistons are deburred for trouble free installation.
    Part TypePiston
    Product LineWiseco Domestic Automotive Forged Pistons
    BrandWISECO
    Package Height4.2
    Package Width10.3
    Package Length28.2
    Weight12.18 PG
    Part CategoryPerformance Parts
    Pin Lock Rings IncludedYes
    Piston Ring Thickness (In.)1.00mm x 1.20mm x 2.80mm
    Part FitmentSemi Universal
    Wrist Pin IncludedYes
    Vendor Part NumberK0042XS
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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