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PROCHARGER F-4X TESTING IS OVER, BUT THE WINS JUST STARTED! 

Normally the R&D phase of a new supercharger is an ultra-hush and top-secret, however, we didn't have that luck. The racers testing the new clean sheet-designed gearbox were so excited about it, they pretty much told the world moments after the first pass. Truthfully, that's 100% ok with us, since not only was the new gearbox a total success, but also the racer's results using it. From records to event wins, and even a Championship, the F-4X supercharger came out dominating - and is showing no signs of slowing down.  

Let's dive into the details, and info on how you can get your hands on one!

What changed? (F-4X vs F-3X):  The entire gearbox design started as a clean sheet, meaning nothing was to be carried over from the now-famous F-3X gearbox other than the mounting location.  This means that virtually every single aspect has changed, from the new helical gear design, larger gear set, different gear ratios, bearings, and front and back billet cases.   

What stayed the same?  With the F-3X-140 area stage already proving itself in years past, currently, the inlet size, outlet size, impeller design, and volute design for the F-4X-140 are unchanged. That being said, with the F-4X being capable of supporting more HP, look for other trims of this new supercharger design, including the F-4X-142, to become available over time.

The Finer Details