MAP sought out the most reliable, proven power supporting components and combined them with our high horsepower tested techniques to develop our new MAP Spec Performance Cylinder Heads.
These heads are precision hand ported and polished in house using specialized techniques and tools we developed over years of racing history. All parts are precision inspected and installed using only the most exacting measuring techniques and state of the art equipment.MAP Spec 4G63 Heads Feature
- *NEW* Ferrea Guides
- *NEW* Supertech Valve Seals
- *NEW* Mitsubishi OEM Core Head
- *NEW* New Ferrea Stainless Valves
- *NEW* Kiggly Beehive High Performance Springs
- 2003-2005 Evo 8
What's in the box?
- 1 MAP SPEC Cylinder Head
- Optional* Kiggly HLA
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