Polaris Ace 900 Specs and Review 2022

Polaris Ace 900: The year 2016 brought the birth of Polaris Ace 900 – just two years following the launch of this series. 

It was an instant hit right from the start! This crossover gave other side-by-sides an opportunity to earn money, thanks to its long-travel suspension, dual-overhead camera design, and incredible power-to-weight ratio.

Polaris Ace 900

Additionally, its single-seat design included daredevil fans wrapped around the machine’s finger.

The Polaris Ace 900 is an innovative 4×4 manufactured by Polaris between 2016 and 2019. 

It has a powerful 78 horsepower EFI ProStar(TM) engine and a comfortable suspension, as well as 4WD and 2WD drive modes, as well as off-road-specific ergonomics This four-wheeler brought new life and purpose to sporty riding.

On the exterior On the outside, on the outside, Polaris Ace 900 looks like one-seat rock-bouncers with its buggy-style roll cage doors that are low-cut as well as knobby-style tires. However, it’s so much more. 

Follow this guide to understand the core of Polaris Ace 900 reviews and find out details about this American company’s strongest and most enjoyable – 4×4.

for the Brave and Wild

If there was a phrase that could be used to describe Polaris Ace 900, it is the one listed above. 

This four-wheeler isn’t for the weak of heart – it has the capacity of a traditional side-by-side, however, it only has room for one person. 

It is a joy to ride the machine and let loose on technical and hardpack trails is a certain amount of skills and some confidence.

The Polaris Ace 900 is part of the series of Polaris quads that were launched in 2014. It was initially available in 325 and 557 displacements, in the beginning, the American firm raised the vehicle from 2016 up to 875 cubic centimeters and added a 60 horsepower ProStar(TM) motor. 

Things improved following the time that the width of the vehicle was increased to 59 inches, the wheelbase got 6.0 inches, and the power output was increased to 78 horsepower. 

Also, the front suspension changed to a dual-A-arm setup featuring a revised steering knuckle and tie rods that were new, along with Walker Evans Racing shocks.

Sport is the term used to describe the sport for the Ace and with its central seating location, buggy-like ROPS, and spacious cockpit to eliminate any issues when it comes to egress and ingress. 

Steering actions are made more efficient through Electric Power Steering, especially when you’re navigating through rocks, ruts, or other trails. Furthermore, Variable Assist changes the vehicle’s characteristics of handling on the basis of the road which makes it less twitchy, even at higher speeds, while also allowing it to accelerate and turn at a moment’s notice. 

These features, along with other outstanding features that create this Polaris Ace 900 an enjoyable and stable vehicle.

Polaris Ace 900 Specs & Features Engine

As with all big bore, Polaris buggies, and quads it has a 4-stroke DOHC twin-cylinder ProStar(TM) engine that will bring these four-wheelers to life. 

Additionally, it shares the same 93x 64.4 mm bore-stroke ratio as well as 10.5:1 compression ratio as the similar-class Ranger (The Polaris Ace 900 XC is equipped with a compressive ratio of 10.6:1). 

This ProStar(r) engine used in the Ace SP 900 in the year 2016 Ace SP 900, in particular, is the 60-hp motor that’s found within the Ranger 900 XP. 

If you’re not satisfied with it difficult to find the Polaris Ace 900 top speed and power output isn’t enough professional outfitters such as HMF Racing can increase horsepower by up to 14 horsepower by re-flashing the ECU. (Just be ready to spend a minimum of $1,000).

2016 Polaris ACE 900 SP 2017 Polaris ACE 900 XC
Engine Brand Name / Model No. ProStar®
Engine Type 4-stroke, DOHC
Cylinder Arrangement Twin-cylinder, 4-valve Twin-cylinder, 8-valve
Engine Cooling Liquid cooling Liquid cooling (w/ auto fan)
Carburetion System Electronic Fuel Injection, 42-mm throttle body Electronic Fuel Injection, 46-mm throttle body
Bore x Stroke Ratio 93×64.4 mm
Compression Ratio 10.5:1
Displacement 875 cm³ / 53.4 in³
Engine Fuel Unleaded gasoline of at least PON 87 rating, containing < 5% MTBE (Methyl Tertiary Butyl Ether), < 10% ethanol, or < 5% methanol
Fuel Capacity 19.9 L (5.25 US gal)
Horsepower 60 hp/60.83 PS (44.74 kW) 78 hp/79.11 PS (58.17 kW)
Top Speed 55 – 70 mph (88.5 – 112.7 km/h) 74 mph (119 km/h)
Maximum Speed (If payload > 152 Kg/335 lbs) 43 mph (69 km/h)
Maximum Towing Speed 10 mph (16 km/h) 15 mph (24 km/h)
Air Filtration Large cylindrical paper pleat mesh/screen
Lubrication Wet Sump
Engine Oil & Quantity 2.5 US quarts (2.4 L) of Polaris PS-4 4-Cycle Oil, SAE 5W-50
Transmission 44 oz. (1.3 L) of AGL Gearcase Lubricant & Transmission Fluid
Demand-Driven 9 oz. (265 ml) of Demand Drive Fluid 6.75 – 7.6 oz. (200 – 225 ml) of Demand Drive Fluid


The capacity of oil of 2.5 US quarts/2.4 liters of SAE 5W-50 PS-4 4 Cycle Oil or equivalent. 

It is your right to make use of any API-certified, SJ (or higher) semi/fully synthetic oil which conforms to JASO the T903MA standards as well as specifications from the manufacturer. 

Any other variant of the oil that is that does not meet these standards could cause damage to your engine or cause your warranty to be void.

Polaris Ace 900 Specs and Review


A single lever shift is used to control wheel spin, and a dual-range PVT that has a shaft with four wheels and a lockable differential manage the power. 

Driveline options are selectable across all models and trims and a few feature the “Turf” option.

The components of the powertrain provide adequate control and stability, which makes it an enjoyable ride through terrain with stumps and craters that are common.

On the flip side, it’s the central seat (or center of gravity) could be a disadvantage in certain circumstances. In contrast to ATVs, this 4×4 doesn’t employ a lateral grip that can counteract body roll. 

Therefore, you’ll need to continue pushing the throttle while moving it forward to stop your rear-end from hanging. 

Additionally, the Ace is not equipped with Active Descent Control or Engine Braking System (EBS) and is required to adjust the clutching for altitudes of 1,500m or more.

2016 Polaris ACE 900 SP 2017 Polaris ACE 900 XC
Transfer, Transmission Type Dual-range automatic PVT (Polaris Variable Transmission) w/ reverse
Gearshifting Shift-type side lever (H/L/N/R/P)
Drive System Shaft ride system, Close-ratio On-Demand True AWD/2WD
Drive Ratio (F/R) 2.989:1
Gear Ratio Low – 28.84:1
Reverse – 25.83:1
High – 9.65:1
Low – 28.84:1
Reverse – 25.83:1
High – 10.73:1

On-Demand(TM) True All-Wheel Drive System

This exclusive feature of our company makes the Polaris Ace 900 into an invincible trail machine. 

The four-wheeled systems automatically start whenever the system detects the wheel spinning, or lack of traction, and switches to 2WD when the reverse is in. 

Certain trims feature a VersaTrac Turf Mode switch, that unlocks the rear differential to allow for more precise, tighter turns on a surface or terrain that is delicate.

Electric Power Steering

Available only for certain trims, this feature is only available for specific Variable Assist that allows driving at lower speeds less difficult. 

It’s a part of its low-range features and is best used when you are hauling or traversing rough terrain.

It also reduces the feedback from the steering wheel and kickbacks caused by bigger obstacles.

Electric Power Steering


Each of the Polaris Ace 900 XC and SP trims feature the digital CDI as well as an electric start with no recoil starter to backup. 

The standard spark plug is a distance that ranges from 0.028-0.031 inches (0.7-0.8 millimeters) and is able to be substituted by Iridium plugs that have similar specifications.

 It is charged by a three-phase alternator (rated output less than) which is supplemented with a 12V 30 Ah (view on Amazon) sealed or a standard battery. 

Make use of a charger similar to one like the battery maintainer from BatteryMINDer (view at Amazon) that has an output that is not more than one-tenth of the battery’s amperage capacity in the case of conventional batteries. 

For sealed batteries, make sure they’re charged to capacity and have a voltage of 12.8V or more when testing with a multimeter or voltmeter.

2016 Polaris ACE 900 SP 2017 Polaris ACE 900 XC
Ignition Digital CDI (Capacitor Discharge Ignition)
Ignition Timing 10° ± 1° @ 1,200 RPM (non-adjustable)
Spark Plug, Gap MR7F / 0.7 – 0.8 mm (0.028 – 0.031 in) gap; Torque specs: 10 ft-lbs (13.5 Nm)
Alternator Type Triple-phase alternator
Rated Output 575 W @ 3,000 RPM
Fuse 30 Amp (engine control, EPS); 20 Amp (lights, AWD drive, winch, 12V power receptacle, electronic engine control, starting, fan circuit braker); 10 Amp (fuel pump, EFI, constant vehicle power); 5 Amp (brake)
Battery 12V 30 Ah/(10 Hr), YB30L-B format
Battery Dimensions (L x W x H) 168 x 132 x 176 mm (6.62 x 5.19 x 6.94 in)
Starting System Electric
Instrumentation LCD, speedometer, indicator lamps, Ride Information Center – clock, odometer, trip meter, hour meter, engine temperature, tachometer, programmable service interval, diagnostic display mode, mode button; separate 12V auxiliary DC outlet
Indicator Lamps Over temperature, neutral, high beam (if equipped), helmet/seat belt, check engine, EPS warning, turf mode (if equipped)

Brakes and Tires

With its wheel-and-tire assembly, climbing uphill is not a problem for the Polaris Ace 900 SP or XC. But descents are an entirely different matter. 

Due to the absence of EBS, the drivers will have to pay more attention to the road to avoid tipping off sideways. 

The good thing is that four-wheel park brakes, hydraulic discs, and hydraulic discs work well in slowing down the vehicle in the event of a need. 

Be careful not to step on the brakes during the first 50 steps to ensure that the braking system isn’t prematurely damaged.

2016 Polaris ACE 900 SP 2017 Polaris ACE 900 XC
Wheel Composition Cast aluminum
Front Tire, off-road/road air pressure AT25 x 8-12, 69 kPa (0.70 kg/cm2, 10 psi) GBC Dirt Commander AT27 x 9-12, 69 kPa (0.70 kg/cm2, 10 psi)
Rear Tire, off-road/road air pressure AT25 x 10-12, 69 kPa (0.70 kg/cm2, 10 psi) GBC Dirt Commander AT27 x 11-12, 97 kPa (0.98 kg/cm2, 14 psi)
Tread Depth Limit 3 mm (0.11811 in)
Front Rim Size, Offset, Bolt Pattern 12×7, 4+3, 4.156 N/A
Rear Rim Size, Offset, Bolt Pattern N/A N/A
Front Brake Type 4-wheel hydraulic disc (Left foot operation)
Rear Brake Type
Parking Brake, Auxiliary Brake Parkin Transmission


Suspension on the 2016 Polaris Ace 900 SP was taken from the Sportsman front MacPherson struts, and two A-arms equipped with coil-over shocks. 

The setup had already been designed with great handling and maneuverability, Polaris saw the need to update the suspension components of the XC model.

 Instead of coil overs Polaris Ace, 900 XC, and the later versions came with piggyback reserve Walker Evans racing shocks (view on Amazon). 

This modification resulted in an increase in the front and rear wheel speed by 3.0 inches in addition to better bottoming resistance and a smoother riding experience.

2016 Polaris ACE 900 SP 2017 Polaris ACE 900 XC
Frame Type Steel square tube
Ground Clearance 260 mm (10.25 in) 330 mm (13 in)
Wheelbase 1,562 mm (61.5 in) 1,715 – 1,727 mm (67.5 – 68 in)
Front Suspension Type, Travel MacPherson struts w/ anti-sway bar & dual-rate springs, 208 mm (8.2 in) Dual A-arms w/ stabilizer bar & Walker Evans clicker needle shocks, 312 mm (12.3 in)
Rear Suspension Type, Travel Dual A-arms w/ anti-sway bar & coil overs, 241 mm (9.5 in) Dual A-arms w/ stabilizer bar & Walker Evans clicker needle shocks, 320 mm (12.6 in)

Polaris Ace 900


Its Polaris Ace 900 dimensions range between 2,296 x 1,220 and 1,730 mm, to 2,450 x 1,500 x 1 800 millimeters, depending on the trim and year. 

Its cargo container has dimensions totaling 17 35 4 inches, but some sources online claim the bed’s height is one inch higher. 

The towing capacity is 680 kg (1,500 pounds) and the dry weight is somewhere between 392.4 Kg (865 pounds) and 488 kg (1,075 kg). 

The maximum capacity for the weight (operator and passenger capacity, as well as cargo and accessories) is 260 kilograms (575 pounds) in all variants.

2016 Polaris ACE 900 SP 2017 Polaris ACE 900 XC
Length 2,296 mm (90 in) 2,380 – 2,450 mm (94 – 96.5 in)
Width 1,220 mm (48 in) 1,500 mm (59 in)
Height 1,730 mm (68 in) 1,550 – 1,830 mm (61 – 72 in)
Seat Height (Unloaded) N/A 730 mm (28.75 in)
Dry Weight 392.4 Kg (865 lbs ± 5%) 488 Kg (1,075 lbs ± 5%)
Bed Box (L x W x H) 430 x 890 x 100 mm (17 x 35 x 4 in)
Maximum Weight Capacity 260 Kg (575 lbs)
Carrier Capacity (F/R) 54 Kg (120 lbs) / 108 Kg (240 lbs)
Tongue Weight 68 Kg (150 lbs) w/ 1.25-inch receiver
Towing Capacity 680 Kg (1,500 lbs); 386 Kg (850 lbs) – up to 15°
GVWR 721 Kg (1,590 lbs) 772 Kg (1,701 lbs)
Test GVW – (ROPS) 748.4 Kg (1,650 lbs) per OSHA 29 CFR 1928.53
Colors Stealth Black Matte Silver Pearl, Velocity Blue


The steel frame of the Ace creates the cabin in a more spacious space that any size rider will enjoy. 

It also offers the safety of a UTV as well as the speed of an ATV all in the same vehicle. The large cockpit is improved by the tilt steering wheel as well as the seats that slide. 

There’s plenty of space underneath the rear rack (3-gallon capacity) and inside the dash – not forgetting to add a bed box which is perfect for additional equipment. 

The instrument dash is equipped with cubby holes in each of the sides and a switch for accessories, Bluetooth connectivity, and clear icons for the coolant’s temperature and level of fuel.

Comfort is unparalleled by the Ace. But if something was to change the seat, it must be the seat in the middle. 

Due to the nature of 4x4s, it is common for drivers to end up moving around in the seat often when they are in high spirits of the riding. 

The bucket seat (view on Amazon) will have stronger harness points, and hold the rider to the seat more securely.

2016 Polaris ACE 900 SP 2017 Polaris ACE 900 XC
Standard Features Front brush guard, cab doors, seat belt, and latch, fuel gauge
Tool Kit Standard Standard
Switches, Controls Drive mode (AWD), ignition, lights Drive mode (AWD), ignition, lights


2016 Polaris ACE 900 SP 2017 Polaris ACE 900 XC
Headlight Single beam halogen, 12V 55 W x 2 Single beam halogen, 12V 55 W x 2
Brake Light/Taillight Single beam, 12V 27 W/6 W x 2 Single beam, 12V 27 W/6 W x 2

Lock & Ride

The Pro-Fit Advantage is a synonym for the system This attachment system utilizes a modular cab system that offers numerous options for accessories – such as gun scabbards, windshields, and even gun shields.

 This attachment integration is characterized by specific attachment points that allow for efficient installation and removal of cabs or accessories. It also can be used with the custom-built Polaris Ace chassis.

Polaris Ace 900 Price

Based on trim and model the Polaris Ace’s prices ranged from $11,499 up to $12,999. 

Although they’re expensive, however, these Ace 900 models are still lower by about $2,000 than their competitors. 

The only UTVs with a price that is slightly lower than those of the Ace are those of the Yamaha Wolverine 700 ($10,999) and The Arctic Cat Prowler 500 ($9499) as well as the Honda Pioneer 700 ($10,499). 

Then again the displacement of engines and horsepower are significantly less with these choices.

Be aware that these figures do not apply to any other accessories not included in the dealer’s package. 

Any performance-enhancing add-ons would cost another $500 to $2,600 on top of the base price. Values for auction listings and trade-ins however range from $4,830 to $13,390. 

The secondhand models are generally operating in excellent condition and the majority of parts functioning and in good condition. 

In between the two Ace trims the 2017-2019 XC models are on the top cost end of the spectrum.

2018 Product Recall

A small number of Polaris RZR, as well as Ace models that were sold from 2016 to 2018, have been recalled voluntarily by Polaris due to malfunctioning the fuel pump’s flange. 

The construction of the assembly led to leakage of fuel due to damaged components. 

These components can increase the risk of fire risk for the wheeler once exposed to the ignition source. 

Polaris received 21 complaints regarding damaged flanges for the fuel pump prior to the announcement of the recall. Fortunately, there were no incidents or injuries reported.

About Polaris

Polaris Inc. is an American firm that is internationally renowned for its innovative products and world-class ATVs, snowmobiles, and motorcycles, such as those of the Polaris Ace 900 SP and XC models. 

The company was founded by manufacturing farm equipment the company has since expanded to various sectors of the automotive. 

The company’s Textron acquisition in 1968 has been the catalyst for its expansion plans, which eventually resulted in the development of new technologies, such as On-Demand(TM) True All-Wheel Drive, and the Lock & Ride attachment system for instance. 

In the year 2019, Polaris boasts more than $6.8 billion in annual sales and is still an industry leader with high esteem in the Powersports sector.

Final Conclusion Polaris Ace 900 Review

While it was not long-lived, however, the Polaris Ace 900 embodied pure pleasure and was at the top of the list of the top UTVs to use on difficult dirt trails. 

It was the best in power and performance and was never unable to provide fans with a thrilling experience. 

Polaris might have stopped production of this vehicle but a number of these cars can be bought from different auction and trade websites. 

For the faint of heart, The Polaris Ace 900 will surely test your endurance on the road.

How fast does the RZR RS1 go?

A single-seat Polaris RS1 can speed speeds of around 80mph (93 MPH after the modifications mentioned above), and vehicles such as those of the Polaris RZR 900 can travel with top speeds of 70-75 MPH.

How fast will a Polaris Ace 570 go?

The 570 cruises easily at 45 mph and a maximum speed of around 60mph. The 900 is in a comfortable spot at about 55 mph. It will also top out at approximately 70mph (at around 6,000 feet altitude).

How much weight can a Polaris ACE 150 hold?

So, unless your kid is a daring daredevil who loves serious hill climbs and dangerous terrain, The Ace 150 is a winner. Capacity for fuel 2.5 gals. Cargo capacity 50 lbs. The weight of the curb is 572 kg.

What is a Polaris ace?

The Polaris ACE150 EFI was designed to provide children 10 years old and over the pleasure of driving under the supervision of an adult. Adjustable Speed Limiting & Ergonomics. Long-Travel Front & Rear Suspension. Electronic Fuel Injected (EFI) 149CC Engine. Safety Nets to ensure you are safe inside the cab.

Where is the battery on Polaris ace?

To get access to the battery inside the ACE, get rid of the seat. For this to be done, pull the lever to release the heart downwards and then slide your chair back until the frame falls off the edge. Then, remove the seat from your vehicle. To reinstall it, you must reverse the procedure.

How fast is a Polaris ACE 150?

HOW FAST IS IT? It’s entirely your decision. Ace 150 has a clever electronic speed limiter system that allows parents can modify the machine’s performance according to their preference. The location of the speed-limiter fuse inside the fuse box determines the top speed for the device at 10, 15, 22, and 29 miles per hour.

What age is a Polaris ace for?

It is the first single-seat youth model The Polaris ACE(r) 150 EFI has been designed to offer children 10 years old and over the pleasure of driving. At the same time, under adult supervision and safety features, parents will appreciate it. The specifications and features listed are from the model 2019.

Will a Polaris ACE 150 fit in a truck bed?

Its 48″ width is approximately the maximum to fit into the tray in a mid-sized pickup. If you want to go any bigger or more wide, it is a trailer that is the only way to choose. Be sure to secure ladders before putting the Ace onto the pickup.

Polaris Ace 900 FAQ

1. How fast does a Polaris Ace 900 go?

The 900 is in its most comfortable spot at around 55 mph, and it will peak at around 70mph (this occurred at the elevation of 6,000 feet). With the wheel’s short base, anything more than 40 mph feels like flying.

2. What is the difference between RZR 900 and 900s?

It’s far different than the RZR XP900, however, they do share with them the ProStar 875cc twin inline engine. The rear of the cage is upright as well as forward the chassis, bodywork, and cabin are shared with XP1K. This gives the 900 plenty of elbow room and space inside the cabin than the earlier RZR 800.

3. Is a side by side a good investment?

That Said, Is It Worth the Investment? If you are a fan of having fun taking your time on the most challenging trails all the way from desert dunes and mountain passes, and everything in between If so, the answer is yes. RZRs are specifically designed to overcome every obstacle you throw before them.

4. How fast does a Polaris Ace 900 go?

The 900 is at 55 mph, and the top speed will be around 70 mph. This was at 6,000 feet elevation. The 900’s short wheelbase makes it seem like you are flying at speeds above 40 mph.

5. Is the Polaris 900 a good engine?

According to the Polaris RZR 900 lineup, it is the most powerful and fastest-accelerating model on the trail. Despite its power, the Polaris RZR 900 off-road machine has many problems that can be troubling. Polaris has many problems to resolve before customers are satisfied.

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