2027 Polaris RZR Pro R Boost: My Firsthand Experience Behind the Wheel of 275 Horsepower

2027 Polaris RZR Pro R Boost: My Firsthand Experience Behind the Wheel of 275 Horsepower

By David Uptain

Polaris invited the media to Sand Hollow, Utah, to experience its most powerful production RZR ever. I had the opportunity to get behind the wheel, spend time with the people responsible for building it, and see what 275 horsepower actually feels like in the dirt.

When Polaris announced the 2027 RZR Pro R Boost with 275 horsepower, I knew it would get plenty of attention. After all, horsepower has become one of the biggest talking points in the high-performance UTV market.

But there’s a big difference between reading horsepower numbers on a specification sheet and actually getting behind the wheel.

Recently, I had the opportunity to travel to Sand Hollow, Utah, for the official Polaris media introduction of the new Pro R Boost. Over the course of the event, I spent time with Polaris executives, engineers, and marketing representatives, rode in competing machines, and drove the new four-seat Boost through a variety of terrain.

What I came away with was a better understanding of what Polaris is trying to accomplish with this machine.

And while 275 horsepower is certainly the headline, there’s quite a bit more going on underneath the body panels.

 

An Unexpected Invitation to Sand Hollow

My opportunity to attend the event came through my friend Matt from Busted Knuckle Offroad Films.

Matt had received an invitation to attend the Polaris media event but wasn’t able to make it. After some conversations with Polaris, I was approved to attend in his place.

I arrived on Tuesday and checked in before joining the group for dinner that evening.

This wasn’t your typical dealer demonstration or organized trail ride.

There were approximately 20 members of the media attending, representing outlets including Car and Driver, The Drive, UTV Guide, and others.

We also had an opportunity to spend time with Polaris public relations personnel, the president of Polaris Off-Road, and members of the company’s executive leadership, including CEO Mike Speetzen.

Having that level of access was interesting because we weren’t simply being handed the keys and told to go ride. We had opportunities to ask questions and hear directly from the people involved in developing and bringing the machine to market.

The following day, it was time to find out what the new Boost could do.

Before Driving the Boost, We Experienced the Competition

One part of the event that I appreciated was Polaris giving us an opportunity to experience competing high-performance UTVs.

Before getting behind the wheel of the Boost, we took passenger rides in several machines, including the Can-Am Maverick R and Kawasaki Teryx H2.

We weren’t driving those vehicles ourselves, so I wouldn’t consider this a direct comparison test. Sitting in the passenger seat doesn’t tell you everything about throttle response, steering feedback, or how a machine behaves when you’re the one controlling it.

But it does provide some perspective on the acceleration, suspension, and overall character of competing machines.

And it’s worth pointing out that these aren’t underpowered competitors.

The Can-Am Maverick R produces 240 horsepower from its turbocharged three-cylinder engine, while Kawasaki’s supercharged Teryx H2 produces 250 horsepower.

Both represent serious competition for Polaris.

The fact that Polaris was willing to put us in those machines before introducing us to the Boost was an interesting decision.

It gave us a reference point before experiencing the additional horsepower and torque of the new RZR.

My Machine: The Four-Seat Pro R Boost

For the driving portion of the event, I was assigned a four-seat RZR Pro R Boost.

Our media group was divided between two-seat and four-seat machines, allowing us to experience the new platform in different configurations.

The four-seater is a substantial machine, and anyone familiar with the Pro R platform knows these aren’t small side-by-sides.

With a 74-inch-wide stance, long-travel suspension, and a relatively long wheelbase, the four-seat Pro R is built with open terrain in mind.

Sand Hollow was a good location to demonstrate that capability.

The area offers everything from rocky technical sections to wide-open desert terrain, making it possible to experience several different aspects of a machine during a single ride.

And that’s exactly what Polaris had planned.

275 Horsepower Is Impressive. The Torque May Be Even More Important.

Let’s get into what makes the Boost different.

At the center of the machine is Polaris’s turbocharged 2.0-liter ProStar Fury four-cylinder engine.

It produces 275 horsepower at 7,000 rpm and a peak of 223 lb-ft of torque at 6,000 rpm.

For comparison, the naturally aspirated Pro R produces 225 horsepower.

That’s an additional 50 horsepower, or roughly a 22% increase.

But there’s another number that deserves just as much attention.

The Boost produces 215 lb-ft of torque at only 4,000 rpm. That’s approximately 96% of its peak torque available well before the engine reaches maximum horsepower.

For anyone who spends time riding technical trails, climbing obstacles, or accelerating out of corners, that matters.

Horsepower gets the attention, but torque and the way the drivetrain delivers it have a major influence on how a machine responds.

Polaris also changed the CVT calibration to take advantage of that broader torque curve.

The naturally aspirated Pro R operates at higher engine speeds, while the Boost is designed to deliver strong acceleration without constantly needing those higher rpm.

That approach makes sense for a machine expected to perform across different types of terrain.

Our First Ride: Desert Trails, Rocks, and Low-Speed Performance

Our first driving session took us through a combination of high-speed desert trails, fence-line sections, and rocky terrain.

This portion of the ride was designed to demonstrate how the Boost handled changing conditions, particularly the engine’s low-end torque and the vehicle’s overall handling.

That’s an important distinction because a high-horsepower machine doesn’t necessarily need all of its available power to be enjoyable.

A large part of recreational riding involves transitioning between different speeds and terrain.

One minute you’re traveling across a relatively smooth desert section, and the next you’re slowing down to work through rocks or an uneven trail.

The Boost’s broad torque curve is intended to make those transitions easier.

Rather than focusing exclusively on peak horsepower, Polaris appears to have put considerable effort into making that power available throughout the engine’s operating range.

We spent approximately two to three hours on that first ride before returning to the event location for lunch.

Lunch With the People Who Built It

One of the more valuable parts of the event happened when we weren’t riding.

After returning from the first session, we had lunch with members of Polaris’s public relations and marketing teams, along with engineers who were available to answer technical questions.

For me, these discussions were an important part of understanding the new machine.

It’s easy to look at a specification sheet and see an additional 50 horsepower.

But increasing engine output by that amount creates additional demands on the drivetrain, cooling system, clutching, and other mechanical components.

Polaris didn’t simply install a turbocharger on the existing engine and leave everything else alone.

The company made substantial changes throughout the machine to support the additional power.

A Stronger Drivetrain

The Boost features a larger, higher-capacity clutching system, additional clutch cooling, a stronger drive belt, reinforced half-shafts, and changes to the transmission and front drive system.

These are meaningful improvements, especially for owners who regularly ride in deep sand, climb steep terrain, or spend long periods driving aggressively.

Of course, stronger components on paper don’t automatically guarantee long-term reliability.

That will take thousands of miles of real use to determine.

But it’s encouraging to see Polaris addressing the components responsible for transferring 275 horsepower to the ground.

A Different Approach to Cooling

Another significant change involves the cooling system.

Polaris relocated the engine radiator to the rear of the machine and added a roof-mounted scoop to supply cooling air.

The front heat exchanger now serves the turbocharged engine’s intercooling system, while the updated design also provides additional drivetrain cooling.

Moving the engine radiator away from the front of the cockpit should help reduce the amount of heat reaching occupants.

Anyone who has spent hours riding in hot weather knows how uncomfortable cabin heat can become.

Polaris also revised engine mounting and CVT calibration to reduce noise and vibration.

Those changes may not generate the same excitement as 275 horsepower, but they could make a substantial difference during a long day of riding.

The Second Ride: Where We Could Open It Up

After lunch, we headed out for our second driving session.

This ride was considerably different from the first.

I’d estimate that approximately 90% of the route involved high-speed desert terrain.

And this is where I had the opportunity to get the four-seat Boost up to roughly 90 mph.

That’s moving in any off-road vehicle, especially one with four seats, long-travel suspension, and 32-inch tires.

At those speeds, horsepower is only part of the equation.

Suspension control, vehicle stability, steering response, and driver confidence all become increasingly important.

The Pro R platform was already developed for this kind of riding, and Polaris has continued refining its electronic suspension technology.

The Boost offers FOX Live Valve shocks controlled through the DYNAMIX system, allowing the suspension to react to changing driving conditions.

The Ultra trim goes further with electronically controlled stabilizer-bar links that can adjust as often as 200 times per second.

That technology is designed to provide additional control during aggressive driving while allowing greater suspension articulation when the terrain demands it.

The combination of high horsepower, long-travel suspension, and electronic control systems is what makes these modern UTVs so different from the machines many of us started riding years ago.

And having the opportunity to experience the Boost at approximately 90 mph provided a perspective that simply looking at specifications cannot.

Polaris Is Trying to Build More Than the Most Powerful UTV

Something that became apparent when examining the engineering behind the Boost is that Polaris is addressing several aspects of the ownership experience.

Yes, it produces more horsepower than its major competitors.

But it also offers changes intended to improve cooling, reduce vibration, strengthen the drivetrain, and make the power easier to use.

The turbocharged engine is also designed to maintain its rated horsepower at elevations up to 10,000 feet and temperatures as high as 115 degrees Fahrenheit, according to Polaris.

For people riding in places like Utah, Arizona, Nevada, and other high-elevation or high-temperature environments, that’s an important claim.

It will be interesting to see how that performance holds up during extended independent testing.

The Interior Is Getting More Attention, Too

The Boost also reflects how much the UTV market has changed over the last decade.

These machines are no longer built exclusively around suspension travel, horsepower, and tire size.

Buyers are increasingly expecting features that were once associated primarily with automobiles.

The Boost offers a 10.4-inch RIDE COMMAND touchscreen, integrated vehicle information, a Rockford Fosgate audio system, and heated and ventilated seating.

Apple CarPlay compatibility is also planned through a software update.

Depending on the trim, buyers can get additional suspension technology, upgraded interior components, and other premium features.

Some riders will appreciate those additions.

Others would probably prefer fewer electronics and a lower price.

And that brings us to one of the biggest questions surrounding the new Boost.

At Nearly $50,000 to Start, Who Is This Machine Really For?

The 2027 RZR Pro R Boost starts at $49,999 before destination, taxes, and other fees.

Higher trims and four-seat configurations can push that number considerably higher.

That’s a lot of money for a recreational off-road vehicle.

For perspective, we’re now talking about prices that compete with new automobiles and pickup trucks.

And that’s before adding accessories, insurance, maintenance, or a trailer to transport it.

For someone buying their first high-performance UTV, the Boost offers an impressive amount of capability straight from the factory.

But what about the person who already owns a naturally aspirated Pro R?

Is the additional horsepower enough to justify trading machines?

That’s going to depend on the individual.

If you’re primarily riding tight wooded trails, running moderate speeds, or simply enjoying weekend trail rides, the existing Pro R already has more than enough power for most situations.

On the other hand, if you’re regularly riding open desert, sand dunes, and demanding high-speed terrain, the additional torque and drivetrain improvements become much more interesting.

The Boost is clearly aimed at enthusiasts who want the highest-performing equipment available and are willing to pay for it.

How Does It Stack Up Against Can-Am and Kawasaki?

The horsepower battle among Polaris, Can-Am, and Kawasaki has become one of the most interesting developments in the UTV industry.

Consider where the three major competitors currently stand:

Machine

Horsepower

Engine

Polaris RZR Pro R Boost

275

2.0L turbo four-cylinder

Kawasaki Teryx H2

250

1.0L supercharged four-cylinder

Can-Am Maverick R

240

1.0L turbo three-cylinder

Polaris currently holds the horsepower advantage.

But I wouldn’t declare it the outright winner based solely on those numbers.

The Maverick R’s dual-clutch transmission offers a different driving experience from the CVT systems used by Polaris and Kawasaki.

Kawasaki brings its own approach with a supercharged engine.

And each manufacturer has made different decisions regarding suspension, drivetrain design, and overall vehicle characteristics.

My passenger rides in the competing machines provided some perspective, but I would want considerably more time driving each one before making a definitive comparison.

A proper back-to-back test with the same drivers, similar terrain, and controlled conditions would be the best way to determine how they truly compare.

What I Still Want to Know

As much as I appreciated the opportunity to attend the event and drive the Boost, there are still questions that can only be answered with more seat time.

How will the updated clutching and drive belt hold up after hundreds of miles of aggressive sand riding?

Will the cooling improvements make a noticeable difference during extended summer rides?

How will the four-seat Boost compare with its competitors in controlled acceleration tests?

And perhaps most importantly, will the improvements justify the additional cost for existing Pro R owners?

These aren’t criticisms of the machine. They’re questions that matter when you’re considering spending this kind of money.

A media introduction is a great opportunity to experience a new product, but it isn’t a substitute for long-term ownership or independent durability testing.

Final Thoughts: My Take on the 2027 Polaris RZR Pro R Boost

After spending time at Sand Hollow, talking with Polaris personnel, riding in competing machines, and driving the four-seat Boost through technical and high-speed desert terrain, I came away with a greater appreciation for the engineering behind this machine.

The 275-horsepower figure is what will get people talking.

And reaching roughly 90 mph in a four-seat UTV certainly puts the performance potential into perspective.

But I think the more interesting story is how much work Polaris put into the supporting systems.

The additional torque, revised clutching, stronger drivetrain, improved cooling, and updated suspension technology all point toward a machine designed to do more than simply produce a bigger horsepower number.

Does everyone need 275 horsepower in a side-by-side?

Absolutely not.

In fact, I’d argue that most recreational riders will never come close to using everything this machine has to offer.

But that’s never really been the point of vehicles like the Pro R.

There’s always going to be a group of enthusiasts who want the latest technology, the most horsepower, and the highest level of factory performance available.

And manufacturers are going to keep competing for those customers.

Polaris has now raised the bar to 275 horsepower.

I don’t expect Can-Am or Kawasaki to sit still for very long.

My biggest takeaway from Sand Hollow is that the Pro R Boost deserves attention for more than its horsepower. The real test will be how well all those improvements work together after owners start putting serious miles on these machines.

And that’s something I’ll be interested in watching as the first units begin reaching dealerships.

— David Uptain