AMS Mitsubishi Lancer Evolution X and Ralliart 4B11 Sleeved Block (AMS A0171B-3A1)PART# AMS AMS.A0171B-3A1
$ 2,376.45 $ 2,399.95
AMS Mitsubishi Lancer Evolution X & Ralliart Sleeved 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.
Please Note: 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
& higher cylinder pressure
- Adds strength and rigidity to block
- Race-proven reliability
- Balanced and blueprinted
- Precise, documented hand assembly
- Custom compression ratios available
- 2008-2016 Mitsubishi Evo X
- 2008-2015 Mitsubishi Lancer Ralliart
What's in the box?
- Sleeved AMS block
- ARP main studs
- **You will have to transfer over
your oil squirters and bolts.**
- MFGR. Limited Warranty