PROMAXX Performance Products
PROMAXX Performance Products specializes in all types of automotive cylinder head for any budget, carrying Performance cylinder heads, diesel cylinder heads and stock replacement …
Maxx Series - PROMAXX Performance Products
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 …
Project X Series - PROMAXX Performance Products
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!
About Us - PROMAXX Performance Products
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 …
Shocker 340 BBC CNC - PROMAXX Performance Products
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 …
Shocker Series - PROMAXX Performance Products
Unlike most of our competitors, we don’t offer different quality CNC designs. At PROMAXX, we provide our elite series at prices that make our competition cringe. Going fast doesn’t have to …
MAXX 290 BBC (Sold in Pairs) - PROMAXX Performance Products
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 …
Series One 185 SBC - PROMAXX Performance Products
The 185cc series 1 heads are perfect for that budget build. Making great power at a price that cannot be matched. Machined and assembled in the USA. Dyno results show 20 to 35 hp …
Maxx 180 SBF (Sold in Pairs) - PROMAXX Performance Products
The SBF Maxx 180 is an as cast head that beats the competition. Don’t let the size fool you, flowing over 260 cfm, this head makes real power. It puts out up to 20 hp over the competition.
MAXX 225 SBC (Sold in Pairs) - PROMAXX Performance Products
The Maxx 225cc SBC head is our largest "as cast" head in our line up, flowing close to 300 cfm @ .700" lift. This head will support big power at a price that can't be beat.