Text Box: Product Detail
signature series cylinder heads - 4 cyl
Text Box: A good foundation is key to your project.  Our RAW Performance Signature Series Cylinder Heads will offer you a brand new pair of bare STi or WRX cylinder heads, custom hand porting - flow bench tested, Supertech oversized intake & exhaust vales (+.5 or +1mm with optional Inconel exhaust valves), performance valve job (5-angle intake, 3-angle & radiused exhaust), Supertech dual performance valve springs, titanium retainers, new spring seats, Subaru valve stem seals, shimless Subaru buckets, and your choice of Kelford camshaft.  Heads are professionally assembled - valve lash set.  
Power is made in the cylinder heads.  This is a great compliment to either our Track Series or Signature Series block.  We pride ourselves on our porting work - nothing less than top of the line.

· New STi or WRX Bare Cylinder Heads

· Custom Hand Porting Work

· 5-Angle Intake Valve Job

· 3-Angle & Radiused Exhaust Valve Job

· Supertech Oversized Valves (+.5 or +1mm)

· Valves Lapped Into Head

· Supertech Dual Valve Springs

· Titanium Retainers - New Spring Seats

· Subaru Valve Stem Seals

· Shimless Subaru Buckets

· Choice of Kelford Camshaft

· Flow Bench Tested

Price: $5,595.00

Item Number: APH3

RAW Performance Signature Series Head

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