Promaxx performance has designed a complete new line of performance heads that meet or exceed the big names in the industry. Promaxx performance products, llc, rainbow city 6,170 likes · 3 talking about this · 9 were here Explore our selection for superior quality and increased power. Promaxx designed their own cnc programs to port chambers, bowls, and runners to maximize air and fuel flow Jegs stocks promaxx performance products at the best prices so get the most out of your vehicle today!
With over 30 years of racing experience, the company has developed a new line of performance heads that meet or exceed industry standards They are committed to providing the best performing cylinder heads on the market at unbeatable prices and offer exceptional. This combined with our 5 angle competition valve job, diamond honed bronze guides, hand bowl blending and assembly by our professional builders right here in the u.s.a produces out of box performance that out performs the top brands in the industry
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