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 hardened against wear, and resists sticking.

  • 21N & 24N Stainless Steel
  • Chromium/Cobalt Seat Material
  • Nitrogen hardened black case
  • New standard for wear resistance
  • Corrosion resistance for marine use and with high percent alcohol fuels

Manley Severe Duty Valves

Only Big Blocks Need Apply

Performance Tune Valves

For extreme temperatures experienced in boosted applications up to 700 HP