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September 2025 by jdm
Do Not Buy From This Company
I paid $1,500 for a CNC ported Ford 300 head from ProMAXX and it showed up cracked near a water port and bolt hole. I hadn’t even torqued it down — just set it on the block — and found the damage. When I contacted them, instead of standing behind their product, all they did was blame me.
After spending this much money and waiting this long, I expected accountability, not finger-pointing. At this point I can’t recommend them — if you get a damaged part, don’t expect support.
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July 2025 by Towerbenz
Promaxx is league's above the competition, Comp cams, edelbrock group, Not even able to talk to a tech person, Pac Springs I am still waiting on a call back, One can have no doubt they are to satisfy thier customers.
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May 2025 by Pj77rm
Awesome service
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August 2024 by Hayden Gattsek
delivered 4 days after i called to order, amazing customer service and very helpful. I will definitely be using them for all of my heads from now on
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October 2023 by kevin west
Great Service and Excellent Attitude!Thanks Steven!
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November 2022 by Frosty
I bought a set of stage 2 heads for my mustang 4 out of 16 valve seats needed to be repaired because they were leaking the machine work itself was obviously done to fast with the exact same set up it made 9 horsepower and 4 foot pounds of torque more they were a absolute waist of time and money it would have been cheaper to buy a real set of quality headsheads
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November 2022 by William Wildowsky
I bought a set of stage 2 heads for my mustang 4 out of 16 valve seats needed to be repaired because they were leaking the machine work itself was obviously done to fast with the exact same set up it made 9 horsepower and 4 foot pounds of torque more they were a absolute waist of time and money it would have been cheaper to buy a real set of quality headsheads
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July 2022 by Nicholas Fandell
These Heads are BEAUTIFUL & POWERFULL! I got the XXTREME 255 LS heads and they are a work of art. Plus, the service and help from everyone I have spoken too is top notch! I truly couldn't be any happier than I am with Promaxx!! Thanks to Jason & Cole!
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November 2020 by Jason Jones
Great Quality and Great Customer Service
