Expected Lead Time: January 2026
CJM-ENG-E25-22-201
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CJM Pro Mod - SLEEVED EJ25
The Ultimate Subaru EJ25 Foundation for Extreme Power
Each unit begins with a brand-new OEM EJ25 case that’s CNC-machined for sleeves. Strength comes from our high Strength Ductile Iron Liners, which replace the factory aluminum bores with ultra-strong, heat-resistant sleeves.
Ductile-iron Sleeves provide significantly higher strength and durability than the OEM cast-in liners, offering exceptional wear resistance, thermal stability, and bore rigidity. The enhanced material properties allow the block to tolerate extreme cylinder pressures and boost levels, confidently supporting 950+ horsepower.
Key Features
Engineered Without Compromise
Whether for a high-boost street car or a full race build, CJM Pro Mod Sleeved EJ25 delivers the strength, cooling, and precision your Subaru engine needs to push beyond its limits.
Built Stronger. Handles More Power.
Requires:
Additional Upgrades available:
Features of the CJM Closed Deck Block
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Achieve superior engine cooling with our advanced CJM closed deck insert, designed with a radial cooling jacket and coolant pass thru holes.
