K243AS - Wiseco Pistons - Professional Series


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Part #: K243AS
Notes: 2618 Alloy Forged Pistons
Open Chamber Dome
502 Dome
Light Weight Drag
Open Chamber
Fits 9.750 Deck
Set of 8 Pistons
Recommended RingSet: W100F8-4500-5
Rings Sold Separate
Includes Pins: S460
Full Round Skirt
MSRP: $952.00
Your Price: $904.40

Specs

Bore 4.5
Comp Height 1.12
Comp Ratio @ 110CC 15:1
Comp Ratio @ 114CC 14.2:1
Comp Ratio @ 119CC 13.5:1
Comp Ratio @ 123CC 13:1
Dome Volume 42.4 Hollow
Gram Weight 571
Rod 6.535 / 6.480 / 6.800 / 6.700
Stroke 4.250 / 4.375 / 4.500 / 4.750

This Item Also Available In

Part Number Price Notes & Specs
6243AS $124.45 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
502 Dome
Light Weight Drag
Open Chamber
Fits 9.750 Deck
Individual/Replacement Piston
Recommended RingSet: W100F8-4500-5
Rings Sold Separate
Includes Pins: S460
Full Round Skirt
Bore 4.5
Comp Height 1.12
Comp Ratio @ 110CC 15:1
Comp Ratio @ 114CC 14.2:1
Comp Ratio @ 119CC 13.5:1
Comp Ratio @ 123CC 13:1
Dome Volume 42.4 Hollow
Gram Weight 571
Rod 6.535 / 6.480 / 6.800 / 6.700
Stroke 4.250 / 4.375 / 4.500 / 4.750
K425A100 $844.40 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
502 Dome
Light Weight Drag
Open Chamber
Fits 9.750 Deck
Set of 8 Pistons
Recommended RingSet: W100L8-4600-5
Rings Sold Separate
Includes Pins: S460
Full Round Skirt
Bore 4.6
Comp Height 1.245
Comp Ratio @ 110CC 16.6:1
Comp Ratio @ 114CC 15.8:1
Comp Ratio @ 119CC 15:1
Comp Ratio @ 123CC 14.4:1
Dome Volume 42.4 Hollow
Gram Weight TBA
Rod 6.7
Stroke 4.5
K425A3 $0.00 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
502 Dome
Light Weight Drag
Open Chamber
Fits 9.750 Deck
Set of 8 Pistons
Recommended RingSet: W100F8-4530-5
Rings Sold Separate
Includes Pins: S460
Full Round Skirt
Bore 4.53
Comp Height 1.245
Comp Ratio @ 110CC 15:1
Comp Ratio @ 114CC 14.2:1
Comp Ratio @ 119CC 13.5:1
Comp Ratio @ 123CC 13:1
Dome Volume 42.4 Hollow
Gram Weight TBA
Rod 6.535
Stroke 4.25
K425A6 $844.40 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
502 Dome
Light Weight Drag
Open Chamber
Fits 9.750 Deck
Set of 8 Pistons
Recommended RingSet: W100H8-4560-5
Rings Sold Separate
Includes Pins: S460
Full Round Skirt
Bore 4.56
Comp Height 1.245
Comp Ratio @ 110CC 15.7:1
Comp Ratio @ 114CC 15:1
Comp Ratio @ 119CC 14.2:1
Comp Ratio @ 123CC 13.7:1
Dome Volume 42.4 Hollow
Gram Weight 614
Rod 6.8
Stroke 4.25
6425A6 $107.45 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
502 Dome
Light Weight Drag
Open Chamber
Fits 9.750 Deck
Individual/Replacement Piston
Recommended RingSet: W100H8-4560-5
Rings Sold Separate
Includes Pins: S460
Full Round Skirt
Bore 4.56
Comp Height 1.245
Comp Ratio @ 110CC 15.7:1
Comp Ratio @ 114CC 15:1
Comp Ratio @ 119CC 14.2:1
Comp Ratio @ 123CC 13.7:1
Dome Volume 42.4 Hollow
Gram Weight 614
Rod 6.8
Stroke 4.25
K240AS $844.40 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
502 Dome
Light Weight Drag
Open Chamber
Fits 9.750 Deck
Set of 8 Pistons
Recommended RingSet: W100F8-4500-5
Rings Sold Separate
Includes Pins: S460
Full Round Skirt
Bore 4.5
Comp Height 1.27
Comp Ratio @ 110CC 15:1
Comp Ratio @ 114CC 14.2:1
Comp Ratio @ 119CC 13.5:1
Comp Ratio @ 123CC 13:1
Dome Volume 42.4 Hollow
Gram Weight TBA
Rod 6.385 / 6.800
Stroke 4.250 / 4.250
K240A100 $844.40 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
502 Dome
Light Weight Drag
Open Chamber
Fits 9.750 Deck
Set of 8 Pistons
Recommended RingSet: W100L8-4600-5
Rings Sold Separate
Includes Pins: S460
Full Round Skirt
Bore 4.6
Comp Height 1.27
Comp Ratio @ 110CC 15:1
Comp Ratio @ 114CC 14.2:1
Comp Ratio @ 119CC 13.5:1
Comp Ratio @ 123CC 13:1
Dome Volume 42.4 Hollow
Gram Weight 641
Rod 6.385 / 6.800
Stroke 4.250 / 4.250
6240AS $107.45 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
502 Dome
Light Weight Drag
Open Chamber
Fits 9.750 Deck
Individual/Replacement Piston
Recommended RingSet: W100F8-4500-5
Rings Sold Separate
Includes Pins: S460
Full Round Skirt
Bore 4.5
Comp Height 1.27
Comp Ratio @ 110CC 15:1
Comp Ratio @ 114CC 14.2:1
Comp Ratio @ 119CC 13.5:1
Comp Ratio @ 123CC 13:1
Dome Volume 42.4 Hollow
Gram Weight TBA
Rod 6.385 / 6.800
Stroke 4.250 / 4.250
K240A6 $844.40 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
502 Dome
Light Weight Drag
Open Chamber
Fits 9.750 Deck
Set of 8 Pistons
Recommended RingSet: W100H8-4560-5
Rings Sold Separate
Includes Pins: S460
Full Round Skirt
Bore 4.56
Comp Height 1.27
Comp Ratio @ 110CC 15:1
Comp Ratio @ 114CC 14.2:1
Comp Ratio @ 119CC 13.5:1
Comp Ratio @ 123CC 13:1
Dome Volume 42.4 Hollow
Gram Weight 618
Rod 6.385 / 6.800
Stroke 4.250 / 4.250
6240A100 $107.45 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
502 Dome
Light Weight Drag
Open Chamber
Fits 9.750 Deck
Individual/Replacement Piston
Recommended RingSet: W100L8-4600-5
Rings Sold Separate
Includes Pins: S460
Full Round Skirt
Bore 4.6
Comp Height 1.27
Comp Ratio @ 110CC 15:1
Comp Ratio @ 114CC 14.2:1
Comp Ratio @ 119CC 13.5:1
Comp Ratio @ 123CC 13:1
Dome Volume 42.4 Hollow
Gram Weight 641
Rod 6.385 / 6.800
Stroke 4.250 / 4.250
6240A6 $107.45 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
502 Dome
Light Weight Drag
Open Chamber
Fits 9.750 Deck
Individual/Replacement Piston
Recommended RingSet: W100H8-4560-5
Rings Sold Separate
Includes Pins: S460
Full Round Skirt
Bore 4.56
Comp Height 1.27
Comp Ratio @ 110CC 15:1
Comp Ratio @ 114CC 14.2:1
Comp Ratio @ 119CC 13.5:1
Comp Ratio @ 123CC 13:1
Dome Volume 42.4 Hollow
Gram Weight 618
Rod 6.385 / 6.800
Stroke 4.250 / 4.250
6425A100 $107.45 Notes 2618 Alloy Forged Pistons
Open Chamber Dome
502 Dome
Light Weight Drag
Open Chamber
Fits 9.750 Deck
Individual/Replacement Piston
Recommended RingSet: W100L8-4600-5
Rings Sold Separate
Includes Pins: S460
Full Round Skirt
Bore 4.6
Comp Height 1.245
Comp Ratio @ 110CC 16.6:1
Comp Ratio @ 114CC 15.8:1
Comp Ratio @ 119CC 15:1
Comp Ratio @ 123CC 14.4:1
Dome Volume 42.4 Hollow
Gram Weight TBA
Rod 6.7
Stroke 4.5

All Fitments

CHEVROLET
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1985 - 2010 502 BIG BLOCK ALL ALL ALL ALL ALL ALL

Product Description

World renowned for their work building race winning pistons, Wiseco utilizes experience from a diverse background of the most sophisticated engines in such venues as Formula 1, Indy Racing League (IRL), NHRA Pro Stock, Moto GP, AMA Superbike, AMA Motocross and Supercross to design and manufacture the highest technology pistons available.

Features

  • 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. More fuel and air equals more horsepower!
  • Piston Domes 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.

ArmorGlide Skirt Coating
Wiseco’s new ArmorGlide skirt coating is the result of testing, development, and benchmarking through our in-house dyno program. The outcome – minimized friction, maximum horsepower, and improved wear resistance.

Not only is ArmorGlide a high-tech lubricant that reduces friction, but it also allows the piston to be fitted tighter within the bore than a non-coated piston. Better ring seal reduces noise from piston rock. ArmorGlide is being applied to selected pistons.

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