EJ & FA Platforms Engines quoted Parts ship same week
Blueprinted assemblies Subaru-only specialists
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Tiered Heads

Tiered Cylinder Heads

All heads are pressure-tested before work begins. Cores accepted — contact us for exchange pricing.

Tier 1 — Cleaned & Tested

Full disassembly, ultrasonic clean, pressure test, three-angle valve job, new stem seals.

Tier 2 — Upgraded Springs

Everything in Tier 1 plus upgraded valve springs for higher lift and RPM.

Tier 3 — Port & Polish

Full CNC port and polish, titanium retainers, upgraded springs, seat cutting.

Tier 4 — Race Spec

Custom flow work. Quoted individually.
Contact for Tier 4