PROR-SC-91
You didn’t bolt on a supercharger to almost be fast.
You did it to feel that hit when the boost comes in and the world goes blurry for a second.
Every supercharger kit includes one custom tune. That gets you in the game.
But different boost levels and different fuels unlock completely different personalities.
380 / 425 Kit
Up to 8 PSI
Tuned for 91 Octane
Clean, reliable, pump-gas power. Perfect for guys who want strong, consistent performance without hunting down race fuel.
460 Kit
Up to 11 PSI
Tuned for 110 Octane
Now we’re stepping into race territory. Sharper timing, more aggressive boost, harder pull through the midrange. This one doesn’t play around.
500 Kit
Up to 14 PSI
Tuned for E50
This is the big dog. Ethanol blend means cooler temps, more timing, more boost — and power that feels violent in the best way possible.
Boost, pulley size, elevation, and fuel all work together.
If they’re not matched correctly, you’re either leaving power on the table… or pushing your luck.
That’s why we built a full pulley reference page to help you match your setup to the correct boost and elevation:
👉 https://www.packardperformance.com/collections/rzr-pro-r/products/rzr-pro-r-supercharger-pulleys
Bottom line?
Pick your boost.
Pick your fuel.
Match your pulley.
And let the Pro R breathe the way it was meant to. 🔥