Description
Designed from the ground up to handle the brutal cylinder pressures of high-boost Mitsubishi platforms, the Kakarakis Performance Billet F4R Block bridges the gap between pure racing performance and elite engineering. By utilizing solid aircraft-grade billet aluminum, it cuts significant weight from the front nose of your Evo while offering a level of torsional rigidity that traditional factory blocks simply cannot match under extreme loads.
Advanced Reinforcement & Crankcase Stability
High-boost F4R setups generate extreme tensile and rotational forces that factory blocks simply cannot handle. Our billet engine block comes engineered with an ultra-robust main girdle system to completely eliminate main cap walk and stabilize the rotating assembly under high torque. To guarantee maximum clamping force under intense boost, the package includes precision-machined, high-grade tool steel head and main studs. Additionally, the block features our in-house produced, heavy-duty steel sleeves, ensuring exceptional cylinder wall stability and ring sealing under massive thermal stress and extreme boost levels.
Flawless Cooling Compatibility & Universal Systems Fitment
Engineered for ultimate versatility, this billet block can be tailored to match your specific vehicle ecosystem. It features optimized cooling jackets precision-machined to integrate flawlessly with your water-cooling system for efficient heat dissipation on high-end street, time attack, or drag cars. For your lubrication needs, the block provides universal fitment for oil systems, allowing you to choose between standard factory wet sump routing or a full motorsport-grade Dry Sump configuration for absolute oil pressure control under intense cornering and hard G-forces.
Advanced Feature Set
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- Billet Aluminum Construction: CNC-machined from a solid block of aircraft-grade aluminum for absolute structural rigidity, optimal heat dissipation, and significant weight savings.
- Integrated Main Girdle: Integrated high-efficiency main grid tie design with premium tool steel fasteners for maximum crankcase rigidity.
- Optimized Sleeve Technology: Heavy-duty in-house produced steel sleeves engineered to eliminate cylinder distortion under high boost.
- Flexible Auxiliary Integration: Tailored to support both OEM or Dry Sump oil systems alongside high-flow cooling compatibility.