new head
gm replacement head
car heads
nissan stock replacement
ford emplacement head
Toyota replacement head
cummins replacement head
vw replacement head
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Project X SBF 210
(SOLD IN PAIRS)

1,139.40
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Project X SBC 185
(SOLD IN PAIRS)

962.10
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Project X SBC 200
(SOLD IN PAIRS)

974.70
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Project X SBC 215
(Sold in Pairs)

1,002.60
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Project X SBF 185
(SOLD IN PAIRS)

1,106.10
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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.

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best cylinder head

MAXX
Series

Taking the affordable performance cylinder head to the next level.

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performance cylinder head

Shocker
Series

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

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"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