Promaxx performance continues to evolve with the project x lineup and has raised the bar on the competition. There is no as cast head on the market that can outflow these heads period! The sbf maxx 180 is an as cast head that beats the competition.

It puts out up to 20 hp over the competition. At promaxx, we provide our elite series at prices that make our competition cringe. Going fast doesn’t have to break the bank, so get a pair of shocker cnc series heads today. Promaxx performance products specializes in all types of automotive cylinder head for any budget, carrying performance cylinder heads, diesel cylinder heads and stock replacement cylinder heads. The 185 vortec has taken the vortec head to the next level. Bigger runner and bigger valves mean more power! Just ask dirt track racer shawn guffey, who has won every race and back to back track …

The 185 vortec has taken the vortec head to the next level. Bigger runner and bigger valves mean more power! Just ask dirt track racer shawn guffey, who has won every race and back to back track … The maxx 290 is truly a rare breed in today’s market. An as cast head that is just as efficient as competition’s cnc ported pieces. Independent flow bench testing shows over 400 cfm with 2. 300 … The shocker cnc 340cc bbc is a professional designed cylinder head using the latest cnc porting tools. These heads out flow the competition at a price that cannot be touched. Some comparable … 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 … About promaxx performance 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 …

Independent flow bench testing shows over 400 cfm with 2. 300 … The shocker cnc 340cc bbc is a professional designed cylinder head using the latest cnc porting tools. These heads out flow the competition at a price that cannot be touched. Some comparable … 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 … About promaxx performance 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 … At promaxx, we provide our xxtreme series at prices that make our competition cringe. Going fast doesn’t have to break the bank, so get a pair of xxtreme series heads today.

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 … About promaxx performance 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 … At promaxx, we provide our xxtreme series at prices that make our competition cringe. Going fast doesn’t have to break the bank, so get a pair of xxtreme series heads today.

Going fast doesn’t have to break the bank, so get a pair of xxtreme series heads today.