Introduced in January 2014, the Polaris Sportsman ACE created an unusual new category between a traditional ATV and a side-by-side. It combined a compact, 48-inch-wide chassis with a centered bucket seat, steering wheel, foot pedals, seat belt and protective cab frame.
Polaris described the Sportsman ACE as offering the nimble size and handling of a Sportsman ATV with some of the security and comfort associated with its RANGER and RZR side-by-sides. Although the adult ACE lineup was eventually discontinued after the 2019 model year, the concept evolved through several increasingly powerful models and helped demonstrate the potential of a modern single-seat off-road vehicle.
What Was the Polaris Sportsman ACE?
The Sportsman ACE was designed for one adult operator. Instead of straddling the machine and using handlebars like a conventional ATV, the driver sat inside an adjustable bucket seat and controlled the vehicle with a steering wheel and automotive-style pedals.
Its major components—and the driver—were positioned between the four wheels to create a relatively low center of gravity and responsive handling. A surrounding ROPS-style cab frame, three-point seat belt, side nets and bodywork provided a more enclosed riding position than an ATV.
At 48 inches wide, the original ACE was also considerably narrower than most recreational side-by-sides. That made it easy to transport and suitable for many tight trails where a wider UTV could be difficult to maneuver. Owners still needed to check local vehicle definitions and trail rules because the ACE was classified and marketed by Polaris as an ATV rather than a conventional recreational off-highway vehicle.
Original 2014 Sportsman ACE
The first Sportsman ACE used a 325cc, liquid-cooled, four-stroke ProStar single-cylinder engine producing a claimed 32 horsepower. Electronic fuel injection provided predictable throttle response, while Polaris’ automatic PVT transmission included High, Low, Neutral, Reverse and Park ranges.
The drivetrain featured selectable two-wheel drive and Polaris On-Demand True All-Wheel Drive. When AWD was selected, the system automatically sent power to the front wheels when additional traction was required and returned to two-wheel drive when the rear wheels regained traction.
Suspension consisted of MacPherson struts with 8.2 inches of travel at the front and dual A-arms with 9.5 inches of travel at the rear. The machine provided 10.25 inches of ground clearance and rode on 25-inch tires.
Polaris ACE Model Evolution
The first 32-horsepower model established the ACE platform, but Polaris quickly expanded the lineup with more powerful engines and higher-performance versions.
Polaris ACE 325
The original ACE was later commonly identified as the ACE 325 to distinguish it from the models that followed. It remained the entry-level adult ACE through the 2016 model year.
Polaris ACE 570 and 570 SP
Polaris expanded the family with the ACE 570 for 2015. Its 567cc ProStar engine produced a claimed 45 horsepower, giving the lightweight single-seater noticeably stronger acceleration while retaining the original model’s compact dimensions.
The ACE 570 SP added premium equipment, including electronic power steering and upgraded wheels and tires. The 570 became one of the platform’s most balanced versions, combining meaningful power with the narrow chassis and trail maneuverability that defined the original ACE.
Read our complete Polaris Sportsman ACE review for firsthand driving impressions, or see the later 2018 Polaris ACE 570 EPS.
Polaris ACE 900 SP
For 2016, Polaris introduced the ACE 900 SP with an 875cc twin-cylinder ProStar engine. It represented a dramatic performance increase over the 325 and 570 models while retaining the single-seat ACE concept.
Polaris ACE 500
The ACE 500 replaced the original ACE 325 as the entry-level model for 2017. Its 500-class single-cylinder engine delivered more usable low-speed torque than the original 325 while preserving the basic narrow-chassis formula.
Polaris ACE 900 XC
The ACE 900 XC arrived for 2017 as the most performance-focused member of the family. Its 875cc twin-cylinder engine produced a claimed 78 horsepower, while a wider chassis, longer-travel suspension and larger tires made it substantially more aggressive than the original trail-width ACE.
The 900 XC was closer to a single-seat sport UTV than the original ACE had been. Its performance-oriented direction also anticipated the Polaris RZR RS1, which launched for 2018 as a dedicated single-seat member of the RZR family.
Original 2014 Polaris Sportsman ACE Specifications
| Engine | 325cc liquid-cooled ProStar single-cylinder |
|---|---|
| Claimed horsepower | 32 hp |
| Fuel system | Electronic fuel injection |
| Transmission | Automatic PVT with Park, Reverse, Neutral, Low and High |
| Drive system | On-Demand True AWD/2WD |
| Front suspension | MacPherson strut; 8.2 inches of travel |
| Rear suspension | Dual A-arm IRS; 9.5 inches of travel |
| Ground clearance | 10.25 inches |
| Overall dimensions | 90 inches long × 48 inches wide × 68 inches high |
| Wheelbase | 61.5 inches |
| Dry weight | 835 pounds |
| Fuel capacity | 5.25 gallons |
| Payload capacity | 575 pounds |
| Towing capacity | 1,500 pounds |
| Front tires | 25 × 8-12 |
| Rear tires | 25 × 10-12 |
Work and Accessory Capability
Although the ACE was primarily a recreational trail machine, Polaris gave it useful cargo and towing capability. The original model had a front storage compartment, a rear Lock & Ride cargo system, a 1.25-inch receiver and a claimed 1,500-pound towing capacity.
Polaris offered more than 25 accessories at launch, including doors, brushguards, rock sliders, roofs, windshields, rear panels, storage products and winches. Its adjustable steering wheel and sliding seat also allowed the cockpit to accommodate drivers of different sizes.
Why Polaris Discontinued the Adult ACE
Polaris discontinued production of the adult ACE lineup after the 2019 model year. The company did not publish a detailed explanation, but the ACE occupied a narrow space between established ATV and side-by-side categories. Its one-person capacity also limited its appeal compared with two- and four-seat UTVs.
The separate Polaris ACE 150 EFI youth vehicle used a similar centered-seat concept but was not a direct continuation of the full-size adult ACE platform.
The Polaris ACE Legacy
The Sportsman ACE remains one of Polaris’ most inventive off-road platforms. It offered riders who did not want to straddle an ATV a compact vehicle with a bucket seat, steering wheel and protective cab structure, yet remained narrow enough for many ATV-oriented trails.
The increasingly powerful ACE 570, 900 SP and 900 XC also demonstrated that a single-seat vehicle could deliver serious recreational performance. The later RZR RS1 took that idea much further with a purpose-built sport chassis, but the Sportsman ACE established the modern Polaris single-seat formula first.
Explore more past and present vehicles in our Polaris UTV model guide and news archive.
