To get the latest news about Performance Liquidations sales and new products, please enter your email address below.






You are here: Home > Cylinder Heads > ProMAXX Cylinder Heads


ProMaxx is a family owned business that began in 2012 by purchasing, and expanding on, the remnants of Patriot Performance and Alabama Cylinder Head Exchange. Specializing in all types of cylinder heads, from diesel to performance, the ProMAXX performance line has become a passion....with the mission of providing 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 from Brackets to Pro Mod and Pro Stock we have learned what works and what does not on the street, as well as the strip. ProMaxx has designed a completely new line of performance heads that meet or exceed established performance levels.
Series One
ProMAXX took their 100% CNC ported intake and exhaust runners and made them into an “As-Cast” version. What this does is offer a high flowing head at a great price. ProMAXX Series One heads come standard with a 5 angle valve job, hardened seats, and bronze guides
MAXX Series
The Pro MAXX MAXX Series is taking affordable performance cylinder heads to the next level, since there are no comparable cylinder heads available. The all new ProMAXX ultra smooth, Grade A 356-T6 aluminum casting, is CNC machined to create the perfect platform for newly developed runner and chamber designs. This is combined with a 5 angle competition valve job, diamond honed bronze guides, hand bowl blending and professional assembly all performed right here in the United States. ProMAXX MAXX Series cylinder heads produce out of box performance that outperforms anything in it's class.
Shocker CNC Series
ProMAXX Shocker CNC Series is the top of the line performance cylinder head. It features professionally designed runners and chambers that are meticulously CNC ported. The all new ProMAXX ultra smooth Grade A 356-T6 aluminum casting is CNC machined to create the perfect platform for newly developed runner and chamber designs. This is combined with a 5 angle competition valve job, diamond honed bronze guides, large spring pockets and professional assembly, performed right here in the United States. Pro MAXX Shocker CNC Heads are proof that going fast doesn’t have to break the bank.