About Iron Cylinder Head Assemblies

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Black-X Composite Valve Technology

Exclusive to Quicksilver – This is a leap forward in composite materials technology.  This leap forward allows use with all fuels and a 42% longer life because the Black-X Composite prevents corrosion, is hardend agains wear, and resists sticking.

  • 21N & 24N Stainless Steel
  • Chromium/Cobalt Seat Material
  • Plasma Nitriding