In the last 20 years, side-by-sides have been evolving like crazy. The major manufacturers have been leapfrogging each other with new suspension, bigger, better engines, upgraded tech, and of course, more horsepower nearly every year.
Now we’ve reached a new apex in performance thanks to Polaris’s new RZR Pro R Boost. The concept is simple—put a turbo on the Pro R.
And now it’s leapfrogged the competition to become the new king of horsepower.
The Polaris RZR Pro R Boost uses a turbocharged ProStar Fury 2.0-liter inline-four engine capable of producing 275 HP.
That’s 35 HP more than the Can-Am Maverick R at 240 HP and 25 HP more than the Kawasaki Teryx H2, both of which enjoyed stints as the King of Horsepower in the past.
Along with 275 HP, the Boost delivers 215 lb-ft of torque at just 4,000 RPM. It hits peak torque at a lower RPM range than the naturally aspirated Pro R so you should feel more power quicker when you hit the gas. As Polaris reports it, the Pro R Boost should produce strong, consistent power all the way until you pin the speedometer.
One trick to the power delivery is their electronic blow off valve. This gives the Pro R Boost the ability to properly turbocharge the engine from sea level all the way up to 10,000 feet. Unless you’re climbing some serious mountains, you should be able to take full advantage of its power wherever you ride.
On top of compensating for elevation, it helps ensure the turbo spools quickly to lower turbo lag.
| Specification | RZR Pro R Boost |
|---|---|
| Engine | Turbocharged 1,997cc inline-four |
| Horsepower | 275 HP at 7,000 RPM |
| Torque | 215 lb-ft at 4,000 RPM |
| Transmission | Automatic PVT/CVT |
| Drivetrain | Selectable 2WD, 4WD and 4WD Lock |
| Width | 74 inches |
| Ground Clearance | 16 inches |
| Usable Suspension Travel | 27 inches front; 29 inches rear |
| Tires | 32 inches |
| Fuel Capacity | 14.7 gallons, two-seat; 17.4 gallons, four-seat |
| Dry Weight | 2,531 pounds, two-seat Ultimate |
| Cargo Capacity | 150 pounds |
| Trims | Ultimate and Ultra |
| Starting Price | $49,999 |
There are two trims for the Pro R Boost: Ultimate and Ultra. Apart from different color options, the Ultra adds BFGoodrich tires, an MPI racing steering wheel, and SDi hydraulic sway-bar links.
Those SDi hydraulic sway-bar links are a hidden game-changer built into the tried-and-true Dynamix system. They can actively engage and disengage as you ride to allow or disallow body-roll depending on what the suspension is doing. It even taps into your Dynamix ride mode, so it allows more body roll in rock mode and less in comfort mode, for example.
Apart from a few specs like weight and cargo capacity, it’s pretty similar to the original Pro R going by specs alone, with the exception of its massively increased power.
The specs don’t give you the full story. It’s been upgraded all over the place to account for the additional power.
We’re getting ahead of ourselves a little bit. The Pro R Boost doesn’t start shipping to dealers until later this year, after all. But when you get your Pro R Boost, come to SuperATV when you need an upgrade. We’ll be here as soon as they hit the dealerships, measuring, designing, and building the parts to make it even better.
Disclaimer: This article was written by an employee of SuperATV. The views, opinions, and recommendations expressed in this blog are the writer’s own and do not necessarily reflect those of SuperATV. This content is provided for informational purposes only and is not intended as safety advice or official technical guidance. Modifying vehicles and using aftermarket parts can impact performance and safety. Readers are responsible for ensuring proper installation, compatibility, and safe operation. SuperATV makes no representations or warranties regarding the accuracy or completeness of this information and assumes no liability for any actions taken based on it.
