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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. This head will support big power at a price that can't be beat. 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
XXTREME 260 LS3 Rectangle Large Bore (SOLD IN PAIRS) - PROMAXX Performance Products
Promaxx performance continues to evolve with the project x lineup and has raised the bar on the competition The maxx 225cc sbc head is our largest as cast head in our line up, flowing close to 300 cfm @.700 lift There is no as cast head on the market that can outflow these heads period!
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 break the bank, so get a pair of shocker cnc series heads today Now go out and shock the competition! 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 of cylinder heads, from diesel to performance Our performance line has become a passion. 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.
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 heads are double the cost of one shocker 340 cnc Flowing over 415 cfm, this head is on top of the heap Now go out and shock the competition.
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 valves This head will change the industry
Compare to any brand, this head makes power!
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.
