AMS Mitsubishi Lancer Evolution X / Ralliart Sleeved Cylinder Block (Block Only)


A perfect foundation for any 4B11 build.


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AMS Mitsubishi Lancer Evolution X / Ralliart Sleeved Cylinder Block

The AMS Mitsubishi Lancer Evolution X / Ralliart Sleeved Cylinder Block is the perfect foundation for your high horsepower 4B11 build!  This is the same block found in the 2009 Redline Champion AMS Time Attack EVO X (TA-X) and the 2009 North American Rally Champion ACP Rally EVO X! During the 2009 season, we were able to extract 850 horse power from this race-proven power plant – setting the world horsepower record for the EVO X in the process!

Each block is precisely machined to accept the latest Darton MID (modular integrated deck) ductile iron sleeves. The sleeves are pressed into the block to sit atop a machined step to ensure they will not sink during engine operation. The block is then final bored & honed using a torque plate to ensure perfect clearances and fitment. The finished product allows for higher cylinder pressures and added strength and rigidity to the block.

If you do not wish to send in a core to have machined a core charge for a new OEM 4B11 block will apply. You are also given the option of choosing any bore size between 86mm and 90mm based on your needs.


  • Ductile iron sleeves
  • Designed for improved head gasket sealing and higher cylinder pressure
  • Adds strength and rigidity to block
  • Race-proven reliability


  • Sleeved AMS block
  • ARP main studs
  • **You will have to transfer over your oil squirters and bolts.**

Please call to order.

Product Notes

  • It’s easy to get overwhelmed with information when shopping for an engine. With all the engine programs and options available in the AMS catalog we recommend that you call in and talk to one of our trained professionals before making your decision. We can help you find the perfect engine for your application and performance needs. No matter what your performance goals may be we will get you an engine that best suits your needs…no more and no less. So give us a call!

Additional information

Weight 140 lbs


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On all orders over $199.99 in the lower 48.*Freight items not included*



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