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VQ35 Stage 4 Cylinder heads

$3,699.99$4,699.98

Stage 4 heads are the best flowing cylinder heads you can buy for your Z or G. They feature 1mm oversize stainless Ferrea valves with the Ferrea race spring and titanium retainer package.These cylinder heads recieve the same high qaulity port work as the stage 2 heads along with additional work to the combustion chambers.We install new seats and do a five angle grind on the seats which is done on a Serdi head machine to accomodate the 1mm oversize Ferrea valves.These heads are capable of 8500 rpms without the risk of valve float.These heads have the potential of 1200+ WHP with the appropriate,turbos,engine,etc……….
The cylinders heads are responsible for getting air into your cylinders. To make big power you needs lots of airflow without compromising velocity.Our cylinder heads will outflow the stock heads by as much as 40% while maintaining enough velocity at both high and low rpms to provide substantial torque and power increases. Our cylinder heads are expertly ported and machined to perfection.There are places out their that get a bit agressive when it comes to porting which can lead to loss of power or worse case scenario, destruction of your heads!

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