Darton Iron MID Wet Sleeves | 2008-2015 Mitsubishi Evo X (800-160)

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Darton Modular Integrated Deck (MID) Wet Sleeves

Darton has engineered a superior solution by using a unique designed cylinder sleeve which when siamesed and nested, creates a solid deck of sleeve flanges held in tension, reinforcing the upper deck area and provides for in-field replacement with what we call Modular Integrated Deck (MID). In addition, Darton designs' manage and enhance water flow from block to head to promote stability of cooling and all sleeves are of the "Wet" design.

The enhanced water flow in and around the flange area is possible because of ported water flow control engineering we call "swirl coolant technology". This process begins with specific engineering models of respective cylinder head and combustion chamber designs and then we promote increased flow of water in those areas of the upper sleeve area subjected to the most heat. There is a different engineering model for each engine and cylinder design. While heat is generally considered to translate into energy, high resident heat in the combustion chamber can lead to detonation, the single highest cause of engine failure in the high horsepower regimes. High RPM normally translates into efficient scavenging of air-flow but during misfires or incomplete flame propagation, high cylinder pressures and temperatures are created. Our MID design compensates for this high resident heat soak condition.


  • Improved block integral strength
  • Improved cooling
  • "Wet sleeve" replace-ability
  • Increased horsepower output potential
  • Superior oil and compression control
  • Street or strip application
  • Kits can be installed by your local machine shop
  • Full installation manual with every kit sale
  • High boost and horsepower potential - Superior cylinder sealing and ring wear
  • Bulletproof Darton ductile iron, 130,000 psi tensile strength


  • 2008-2015 Mitsubishi Evo X

What's In The Box?

  • (1) MID Wet Sleeves
  • Tube of Gasket Maker


  • Manufacturer Standard Warranty

    Customer Reviews

    Based on 1 review
    Go for 500+ or go home

    Thanks to Darton for these sleeves. 4B11 despite being really good engine in many aspects is reasky to go above 500bhp (though I know few cars running stock sleeves question is always how long and eficcient).
    If you want to make sure you will be running with those dartons without complications make sure you placed those sleeves high enough. Otherwise dont blame the head gasket for being blown.