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Over 40 Years of HEMI Experience!




Modern Muscle / ModernMuscleXtreme.com CNC ported heads are unmatched in performance and endurance. Relying upon over 40 years of HEMI experience as it applies to drag racing, and other competitive automotive sports, our heads are sure to exceed your expectations. Our custom porting process is done using state-of-the-art CAD/CAM software to ensure maximum flow performance and consistency across all of our parts.

Port my Heads

Products Per Page:
 
HEMI CNC Head Porting Service by MMX
**Please ensure your heads are clean and do not have values**You send in your clean heads with no valves and we run our proprietary CNC...read more
Sale: $699.99
 
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