$25 Off $250 / $50 Off $500, on Summit Racing Brand Products - Use Promo Code: BUILDIT

$25 Off $250 / $50 Off $500, on Summit Racing Brand Products - Use Promo Code: BUILDIT

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PROMAXX Performance Shocker Series Small Block Mopar Cylinder Heads

5.0 out of 5 stars 1 Customer Reviews

If you are a small block Mopar enthusiast, you know your choice for performance cylinder heads is limited. PROMAXX Performance Shocker Series small block Mopar cylinder heads are a fully CNC-machined. Don't be stuck with over-priced, under-performing cylinder heads. Let the PROMAXX Performance Shocker Series cylinder heads wake up your small block Mopar.

Features, items, and specs:

* 171cc fully-ported runners
* 5-angle valve job
* Diamond-honed bronze guides
* Large spring pockets
* Multiple spring options
* 21-4N one-piece swirl-polished back-cut stainless steel valves are available

Results 1 - 3 of 3

Cylinder Heads, Aluminum, Assembled, 65cc Chamber, 171cc Intake Runner, Chrysler, Dodge, Plymouth, Small Block, Pair

Part Number: PMX-93625

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

Cylinder Heads, Aluminum, Bare, 63cc Chamber, 171cc Intake Runner, Chrysler, Dodge, Plymouth, Small Block, Pair

Part Number: PMX-9361

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

Cylinder Heads, Aluminum, Bare, 65cc Chamber, 171cc Intake Runner, Chrysler, Dodge, Plymouth, Small Block, Pair

Part Number: PMX-93615

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

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