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Cosworth CNC Ported Big Valve Cylinder Heads - EVO 9
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On sale for the next 15 minutes
SKU: KK3852
Price: $4309.95

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Product Overview
The Cosworth CNC ported cylinder head for the EVO 9 (with Mivec) features dyno tested and flow bench proven ports, engineered for maximum usable power. Each new cylinder head is ported on a 5 axis machine to ensure consistency and perfect port shape every time. Additionally, larger intake (+1mm) and exhaust valves (+1mm) are utilized to help increase flow. Cosworth CNC ported Big Valve cylinder heads come complete with a performance valve job, hi rev (max 10,500rpm) valve springs with titanium retainers and are ready to install. Perfect for high performance applications and designed for excellent torque and turbo response.

  • CNC Ported/Machined finish port- New Castings
  • Hand blended finish work
  • Intake 20% (max) increased flow
  • Exhaust 22% (max) increased flow
  • 4-angle Inlet Valve job
  • 3-angle & radius Exhaust Valve job
  • Valves are lapped
  • Back-Cut Inlet Valves
  • Heads are Ultra Sonic cleaned prior to assembly
  • Heads are Serialized and sport a machined Cosworth logo
  • +1mm Stainless Steel Intake Valves (1800 degrees max.)
  • +1mm Inconel Exhaust Valves (2400 degrees max.)
  • Performance Valve Springs
  • Titanium Retainers
  • Hardened Steel Spring Platforms
  • Knife edged port divider
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