Cosworth Subaru EJ25 (2.5L) STI Performance Cylinder Heads
[COS KK3670]
 Our Price: $4,222.00
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Description:Cosworth Subaru EJ25 (2.5L) STI Performance Cylinder Heads
[COS KK3670]
- CNC Ported - New OE Castings
- Hand blended finish work
- Intake – 14.63% Increased Flow (average)
- Exhaust – 30.56% Increased Flow (average)
- 4-angle Inlet Valve job
- 3-angle & radiused 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

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