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United Engine Machine KB203KTM.STD

Chevy 454 Hypereutectic Pistons Solid Dome

United Engine Machine KB203KTM.STD
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Estimated ship date 03/21/18 if Ordered Today
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United Engine Machine KB203KTM.STD Chevy 454 Hypereutectic Pistons Solid Dome $469.99
Chevy 454 Hypereutectic Pistons
  • Solid Dome
  • Bore: 4.250"
  • Use W/6.135" Connecting Rod And 4.000" Crank Stroke
  • Compression Ratio: 96.5cc-11.0, 105cc-10.2, 108cc-9.9, 119cc-9.1
  • 8/pkg

  • United Engine Machine KB203KTM.STD Details

    Chevy 454ci

  • Dome Top Pistons

  • Bore:4.250
  • Stroke:4.000
  • Rod Length:6.135
  • Comp. Height:1.645
  • OE Deck Height:9.000
  • Pin Diameter:.09900
  • Top Land:0.319
  • Weight Piston/Pin:721/158
  • Head Type:Solid Dome
  • Ext. Valve Depth:0.000
  • Int. Relief Depth:0.266
  • Effective Head Volume:-12cc
  • Ext. Valve Diameter:0.000
  • Int. Relief Diameter:2.310
  • Ring Packs:2-5/64, 1-3/16
  • Ring Sets:4250AM8
  • Pin Number0990x300K
  • Lock RingPRG110-3

  • Specifications:

    Manufacturer's Part Number:

    100% CNC Machined Pistons

    New high silicon alloys and diamond tooling have give Keith Black designers the material and equipment for performance breakthroughs in engine design. KB piston are 100% CNC machined and T-6 heat treated from 16%-18% silcon Hypereutectic alloy. Features include drilled oil returns and pin oil supply, .072'' spiral wound retaining ring, 100% diamond turned, compensated high strength ring lands, high top ring location, 360° pressure pin oiling, diamond honed pin hole and lightweight rigid rib skirt design.


    • 390 Hypereutectic alloy with 16% Silicon
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Sold in Sets (except when noted as 1 piston per package)

      Click here for reference guide to piston top designs