Polaris has introduced the RZR Pro R Boost, a side‑by‑side vehicle that now delivers 275 horsepower, positioning it as the most powerful factory model in its class.
Turbo upgrade pushes power to new levels
The new version adds a 60‑mm Garrett turbocharger to the existing 2.0‑liter four‑cylinder engine. According to the manufacturer, the turbo is designed to maintain peak performance up to 10,000 feet of elevation. The resulting output reaches 275 hp at 7,000 rpm, with torque of 223 lb‑ft at 6,000 rpm. These figures are claimed to hold in ambient temperatures as high as 115 °F.
Polaris notes that top speed remains at 92 mph, but the vehicle should reach that figure more quickly than the prior naturally aspirated model.
Drivetrain and cooling upgrades address added stress
To accommodate the extra power, the engineering team upgraded the cooling system with a dual‑radiator arrangement that serves the engine, turbo and transmission. A larger clutch with additional fins is also fitted, a change aimed at extending the life of the continuously variable transmission belt.
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Further downstream, the drivetrain components have been reinforced. Half‑shafts are now built to resist the type of failure that has plagued earlier models, and the front differential receives a beefier design. These changes aim to reduce the likelihood of breakage during demanding off‑road use.
The boost feels immediate.
Polaris has also retained its Dynamix suspension lineup. The Ultimate trim includes rear bump control, while the Ultra version adds Dynamix DVS with active sway‑bar links that adjust up to 200 times per second. The Ultra model receives a carbon‑fiber hood, carbon‑fiber seat bezels, an MPI GT steering wheel and 32‑inch BF Goodrich tires.
From a practical standpoint, the enhancements suggest that the RZR Pro R Boost will handle the rigors of high‑altitude and high‑temperature environments better than its predecessor. However, the higher performance also means owners may need to be more diligent about maintenance, especially regarding the CVT belt and cooling system.
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Pricing places it at the top of the market
Base pricing starts at $49,999 for the two‑door Ultimate model and $53,999 for the four‑door version. The Ultra trim is priced at $52,999 for the two‑door and $56,999 for the four‑door configuration. These figures make the RZR Pro R Boost the most expensive side‑by‑side currently available, as well as the most powerful.
For buyers, the cost reflects both the performance gains and the extensive upgrades to the vehicle’s chassis and drivetrain. The market for high‑performance off‑road machines remains niche, but the new model’s specifications may attract enthusiasts seeking a factory‑built solution that rivals custom‑built builds.
Overall, the RZR Pro R Boost appears to be Polaris’s answer to competing models that have recently pushed horsepower limits, such as the 240‑hp Can‑Am Maverick R and Kawasaki’s 250‑hp Teryx H2. By adding a turbo and reinforcing critical components, Polaris aims to reclaim a leading position in the performance side‑by‑side segment.
