MAP Stage 1 Evo X Cylinder Head Preparation | 2008-2015 Mitsubishi Evo X (EVOX-CHS-S1)

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Stage 1 Cylinder Head Service - Evo X 4B11T

The MAP Stage 1 service is a great option for those looking to ensure that their cylinder head is in good working order and properly prepared for installation on a street or performance application. Please note there is no port work performed with this service.

Included Services

  • Clean / Hot Tank
  • Visual Evaluation / Inspection
  • Deck Resurface to High Performance RA Specs
  • Proprietary MAP 5 Angle Radius Valve Job
  • MAP Stage 1 Service
  • Final Assembly
  • Outbound Shipping

Included Valvetrain Components

  • GSC Spring and Retainers
  • GSC Valve Seals
  • Ferrea Valves
  • Mitsubishi Valve Locks
  • MAP Stud and Nut Kit

Valvetrain Components

  • Whether using a new or sending in a used core, we provide and include all valvetrain components needed for this service.

Core Options

We offer two different options in regards to our cylinder head core service, please select the one that fits your specific situation and time line.

  • Have Core & Will Send It In: Select this option if you have a core cylinder head to send to us and you would like us to perform the services to your cylinder head after it has been received. Please see your order confirmation for details on where to ship your block for service.
  • Purchase New Core: Select this option if you do not have a good cylinder head to send in as a core. We will purchase a new core to use for your cylinder head service. This charge is non-refundable.


  • 2008-2015 Mitsubishi Evo X

What's In The Box?

  • Stage 1 Cylinder Head with Chosen Options

Why Choose MAP Machining Services?

We utilize a Serdi seat and guide machine that provides us with some of the industry's finest valve jobs. We not only cut seats for the non performance market, but have also designed specific cutters that we use in all our modern 4 valve heads. Every head is also vacuum checked after each seat is cut to ensure that no head leaves with a poor sealing valve. We would then typically set and adjust the installed valve tip height to our specs to ensure proper valve train geometry is maintained.

We also have a resurfacing machine that provides a superior RA, or finish, on both cast and aluminum blocks and heads, which is crucial for proper head gasket sealing in modern engines. Ours uses the CBN cutters and provides a superior finish to the older, multi-cutter systems that many shops still use.


  • No Warranty

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