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Wiseco K430M91 Ford 4.6L Modular Flat Top Forged Piston Shelf Stock Kit 91mm Bore

(Ford F-150 1997-2010, Mustang 1996-2010, F-250 Super Duty 1999-2008, Explorer 2002-10, F-350 Super Duty 1999-2008, Expedition 1997-2004 + 8 more models)

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

K430M91
5 reviews
Sale Price

$759.50

Estimated ship date Thursday, November 19

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Live-in-stock inventory

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Product Details

The Wiseco K430M91 is a shelf stock forged piston kit designed for the Ford 4.6L Modular engine, featuring a flat top crown design with a 91mm (3.583 in.) bore and 1.220 in. compression height. Built for performance builders who demand reliability under demanding conditions, this kit delivers race-proven durability in a ready-to-ship package.

Wiseco's shelf stock kits are manufactured to the same exacting standards as their custom-order Professional Series pistons, giving builders access to high-quality forged components without lead time delays. Each piston is forged and machined in the USA from 2618 high-strength aluminum alloy, chosen for its superior tensile strength and resilience under elevated heat and pressure.

Key Features:

  • 91mm Bore — Flat top crown design for optimized compression
  • 1.220 in. Compression Height — Engineered to work with stock and performance Ford 4.6L Modular rotating assemblies
  • 2618 Forged Aluminum Construction — Enhanced tensile strength over cast alternatives
  • ArmorGlide® Skirt Coating — Reduces friction, resists seizure, and promotes quieter piston operation
  • Precision Ring Grooves — Machined for consistent ring seal and long service life
  • Fully Machined Crown — Clean flat top profile for proper combustion chamber geometry
  • Shelf Stock Availability — No special order required; engineered for common high-performance builds
  • Manufactured in the USA at Wiseco's Mentor, Ohio facility

The Wiseco K430M91 piston kit is an ideal upgrade for Ford 4.6L Modular engine builds seeking improved strength and performance over factory cast pistons. Whether used in a street/strip build or a dedicated race application, Wiseco's forged construction provides the durability required to handle increased power levels.

Products specifications

Fits

Ford F-150 1997-2010, Mustang 1996-2010, F-250 Super Duty 1999-2008, Explorer 2002-10, F-350 Super Duty 1999-2008, Expedition 1997-2004, F-250 1997-99, Crown Victoria 1992-2011, Explorer Sport Trac 2007-09, E-150 2006-12 + 4 more models

Comp Height

1.215

Comp Ratio @ 42CC

X:1

Comp Ratio @ 50CC

10:1

Comp Ratio @ 51CC

X:1

Comp Ratio @ 53CC

X:1

Dome Volume

0cc FT

Gram Weight

346

Rod

5.933

Stroke

3.543

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Quick and easy pay options!

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