Promaxx - The Cheapest Performance Cylinder Heads At Summit Racing!
This video reviews the Promaxx Performance Freedom Series aluminium cylinder head that you can buy from outlets such as Summit Racing.
These heads are very cheap for what they offer. They come with either a 64cc or 72cc combustion chamber.
A range from 185cc to 225cc Intake runner.
A range from 62cc to 72cc Exhaust runner.
They can be bought assembled with performance valve springs with a max lift of .575".
These heads also come with a range of sizes of stainless steel valves.
Prices start as cheap as $693 for a bare set. Check them out if your intrested!
https://www.summitracing.com/parts/pm...
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