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Keith Black/KB Pistons KB116-040 - Keith Black KB Performance Pistons

  • Pistons, Hypereutectic, Dome, 4.040 in. Bore, Ford, Set of 8
  • Application Specific
  • Estimated Ship Date: 5/29/2012
 
BrandKeith Black/KB Pistons
Manufacturer's Part NumberKB116-040
Part TypePistons
Product LineKeith Black KB Performance Pistons
Summit Racing Part NumberUEM-KB116-040
 
Bore (in)4.040 in.
Bore (mm)102.616mm
Piston StyleDome, with two valve reliefs
Piston MaterialHypereutectic aluminum
Compression Distance (in)1.608 in.
Dome Height (in)0.200 in.
Piston Head Volume (cc)-2.60cc
Wrist Pin StylePress-fit or floating
Pin Diameter (in)0.912 in.
Piston Ring Thickness5/64 in. x 5/64 in. x 3/16 in.
QuantitySold as a set of 8.
NotesSolid dome design. Piston weight 600g, pin weight 143g.
CalculatorCompression Calculator
ToolStroker Combinations
 

Keith Black hypereutectic pistons are made from 390 alloy and heat-treated to T6 standards, which makes them 30 percent stronger than ordinary untreated hypereutectics. Their 100 percent CNC-machined crowns, high upper compression-ring location, gas-accumulator groove, drilled oil returns, and spiral-lock retainer grooves make these pistons outstanding for performance applications. On top of that, Keith Black's hypereutectic pistons have a lightweight, rigid-rib skirt design that stabilizes the piston in the bore. All of this adds up to pistons that fit tighter than forged types, provide improved oil control, reduce blowby, increase ring life, eliminate cold start-up knocking, and won't cost you an arm and a leg!

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