PIE SuperTune Big Block MOPAR Cylinder Heads

ProMAXX has built its reputation on delivering solid performance at low prices, something we can identify with here at PIE. So to help make their good thing better, we offer our signature level of performance porting for ProMaxx heads, which means thorough, in-house, R&D work, countless hours of development time and flow testing and quality-consistent, CNC machining, which all adds up to better performance at better prices.