new head
gm replacement head
car heads
nissan stock replacement
ford emplacement head
Toyota replacement head
cummins replacement head
vw replacement head
new performance head

Series
One


We have taken our 100% CNC ported intake and exhaust runners and have made them into an “As-Cast” version.

best cylinder head

MAXX
Series


Taking the affordable performance cylinder head to the next level.

performance cylinder head

Shocker
Series


Custom CNC machining makes these heads a must have for any performance

“If you need a performance racing head to work right out of the box, ProMaxx never lets you down.”Kye Kelly

“If you need a performance racing head to work right out of the box, ProMaxx never lets you down.”Kye Kelly