at Minimum Pricing


We are a family owned business that began in 2012 by purchasing the remnants of Patriot Performance and Alabama Cylinder Head Exchange. We specialize in all types of cylinder heads, from diesel to performance. Our performance line has become a passion. Our mission is to provide the best performing cylinder heads on the market, at a price that cannot be beat. With over 30 years of racing experience, at nearly every level bracket; pro Mod and Prostock. We have learned what works and what does not on the street and the strip. We have designed a complete new line of performance heads that meet or exceed the big names in the industry. We also have customer service that is second to none, giving attention to each customer’s questions and concerns. We are a relatively small company that realizes that each customer is important.

Why Promaxx?


We friendly knowledgeable have a staff that you can reach out to 5 days a week

Reliable Performance

High Quality manufacturing from a group of people that has passion for high performance

Afforadable Pricing

Being a group of racers, we know that we have expensive hobby

Why pay more for a name?

Competitor D


per pair
  • Flows 263 at .600
  • No Bowl Blending
  • 3 Angle Valve Job

Competitor E


per pair
  • Flows 253 at .600
  • No Bowl Blending
  • 3 Angle Valve Job