Staring down the Polaris lineup can feel like a tough choice. You see two legendary engine sizes staring back at you: the 570 and the 850. You know one is bigger, but what does that really mean for your weekend on the trails, your work on the property, or your wallet?
You’ve probably heard guys at the trailhead swear by one or the other. It’s a classic debate, and it’s easy to get lost in spec sheets and horsepower numbers that don’t tell the whole story. The truth is, the best engine isn’t just about being the biggest or fastest.
We promise this complete polaris 850 vs 570 guide will cut through the noise. We’re going to break down the real-world differences in power delivery, handling, long-term maintenance, and overall cost. By the end, you’ll know exactly which machine is built for the way you ride.
The Tale of Two Engines: Core Differences at a Glance
Before we dive deep into the feel and function, let’s get the technical specs out of the way. Think of this as the tale of the tape. These numbers are the foundation for everything we’ll discuss about how these machines behave in the real world.
Understanding these core differences is the first step in our polaris 850 vs 570 guide.
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Polaris 570 ProStar:
- Engine Type: Single-Cylinder DOHC
- Displacement: 567cc
- Horsepower: Around 44 HP
- Key Trait: Quick-revving with strong, immediate low-end torque.
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Polaris 850 ProStar:
- Engine Type: Twin-Cylinder SOHC
- Displacement: 850cc
- Horsepower: Around 78 HP
- Key Trait: Smooth, deep powerband with massive top-end capability.
The biggest takeaway here is single-cylinder vs. twin-cylinder. A single-cylinder (570) provides a punchy, responsive feel right off the line. A twin-cylinder (850) delivers power more smoothly and has a deeper well of torque to pull from, especially at higher speeds.
Power and Performance Breakdown: How They Actually Feel
Horsepower numbers are just one piece of the puzzle. How that power is delivered to the wheels is what truly defines the character of an ATV. This is where the choice becomes less about numbers and more about your personal riding style.
The 570 ProStar: The Reliable Workhorse
Don’t let the smaller displacement fool you. The 570 is an incredibly capable and fun engine. Its single-cylinder design gives it a snappy, responsive feel that’s perfect for navigating tight, wooded trails.
The power is immediate and predictable. When you hit the throttle, it goes without the intimidating rush of a bigger engine. This makes it a fantastic choice for riders who prioritize technical skill over brute force or for those new to the sport.
For utility work like hauling firewood or plowing a driveway, the 570’s low-end grunt is exactly what you need. It gets the job done efficiently without burning a hole in your fuel budget. It’s a prime example of having the right amount of power for the job.
The 850 ProStar: The Trail Dominator
The 850 is all about raw, exhilarating power. The twin-cylinder engine is remarkably smooth, but when you lay on the throttle, the acceleration is immense. It pulls hard through the entire RPM range, from a crawl to top speed.
This is the engine for the rider who wants to conquer deep mud holes, fly up steep hill climbs, and feel a rush on open fire roads. The benefits of polaris 850 vs 570 are most obvious when you need to spin big, heavy mud tires or when you demand instant, arm-stretching acceleration.
While it’s smooth, that 78 horsepower demands respect. It’s an engine best suited for experienced riders who understand throttle control and can manage the machine’s weight and power at speed.
A Crucial Guide: Polaris 850 vs 570 – Who is Each Engine For?
So, how do you choose? The best way to approach the polaris 850 vs 570 decision is to be honest about your primary use. Let’s break down the ideal rider for each platform.
You’re a “570 Rider” If…
- Work Comes First: You need a dependable machine for property maintenance, hunting, or farm chores. Its efficiency and usable torque are perfect for this.
- You Ride Tight Trails: Your rides are in dense woods where top speed is irrelevant and nimble handling is king.
- You’re on a Budget: The 570 offers a lower initial purchase price and better fuel economy, saving you money both upfront and at the pump.
- You’re a Newer Rider: The predictable power delivery helps build confidence and skills without being overwhelming.
You’re an “850 Rider” If…
- You Crave Adrenaline: Speed, power, and the thrill of acceleration are your top priorities.
- You Tackle Extreme Terrain: You frequently ride in deep mud, sand dunes, or on steep, challenging hills where extra power is a necessity, not a luxury.
- You Plan to Add Heavy Mods: If you’re dreaming of massive 30-inch tires and a snorkel kit, the 850 has the grunt to turn them effectively.
- You’re an Experienced Rider: You have the skills to safely manage nearly 80 horsepower and the weight that comes with a high-performance machine.
Maintenance and Common Problems with Polaris 850 vs 570
Long-term ownership is a huge factor. Both engines are solid, but their designs lead to different maintenance needs and potential quirks. Following a good polaris 850 vs 570 care guide is key to longevity.
Polaris 570 Maintenance & Known Issues
The 570 has a stellar reputation for reliability. Its simpler single-cylinder design means fewer moving parts. Regular oil changes, air filter cleanings, and clutch inspections are the core of its upkeep.
- Air Filter: The ProStar engine breathes a lot of air. Always use a high-quality, well-oiled filter like a Twin Air or UNI filter and check it after every dusty ride. Dust ingestion is the #1 killer of these engines.
- Clutch Wear: Because it works hard, the clutch can wear, especially if you add larger tires. Keep an eye on engagement and listen for odd noises.
- Pro Tip: Many owners find that a quality aftermarket clutch kit, like one from EPI or Dalton, can dramatically improve performance and belt life, especially for specific riding styles.
Polaris 850 Maintenance & Known Issues
The 850 is also a reliable powerplant, but its high-performance nature requires diligent attention. Following polaris 850 vs 570 best practices for maintenance is not optional here.
- Heat Management: Twin-cylinder engines produce a lot of heat. Ensure your radiator is always clean and the fan is working properly. Some riders add heat shielding to protect plastics and improve comfort.
- Oil Consumption: Due to their design, some high-output twins can consume a small amount of oil between changes. Check your oil level before every ride—not just every few.
- Vibration: While smooth under power, twin engines can sometimes vibrate more at idle. Be sure to periodically check motor mounts and look for any fasteners that may have loosened over time.
Beyond the Engine: Chassis, Costs, and Eco-Friendliness
The engine you choose is often packaged in a different chassis with different components. This impacts handling, ride quality, and your total cost of ownership.
Chassis and Handling
Generally, 570 models are built on a slightly smaller, lighter chassis. This makes them feel more nimble and easier to maneuver in tight quarters. They are less fatiguing to ride over a long day of technical trails.
The 850 models almost always feature a larger, more robust frame designed to handle the extra power and stress. They often come with upgraded suspension components like arched A-arms for better ground clearance and a more premium ride quality at high speeds. They feel more planted and stable but can be a handful on very narrow trails.
Cost of Ownership and Eco-Friendly Considerations
The 850 will cost you more upfront, and the expenses continue from there. It consumes more fuel, wears out tires faster, and parts can be more expensive. This is the price of high performance.
When considering a more sustainable polaris 850 vs 570 approach, the 570 is the clear winner. Its superior fuel efficiency means a smaller carbon footprint per mile. For any rider, practicing Tread Lightly principles and performing regular maintenance for peak efficiency are the best ways to be an eco-friendly polaris 850 vs 570 owner.
Frequently Asked Questions About Polaris 850 vs 570
Is the Polaris 850 more reliable than the 570?
Both engines are considered very reliable when properly maintained. However, the 570’s simpler single-cylinder design has fewer internal components, giving it a slight edge in long-term simplicity and potentially fewer failure points over a very long lifespan.
How much faster is the 850 than the 570?
The difference is significant. While a 570 might top out around 60 MPH, an 850 can reach 70-75+ MPH. More importantly, the 850 gets to its top speed much, much faster. The acceleration and mid-range pull are in a completely different league.
Which engine is better for plowing snow?
This is a great debate. The 570’s instant low-end torque is fantastic for pushing snow and is more than enough for most residential driveways. The 850’s raw power is beneficial for very heavy, wet snow or large commercial lots, but it requires more throttle control to avoid spinning the tires.
Can I still have fun on a 570 if my friends have 850s?
Absolutely! On tight, technical trails, a skilled rider on a 570 can easily keep up with, and often out-maneuver, an 850. It’s only on long, straight stretches or extreme hill climbs where the power difference becomes a major factor.
The Final Verdict: Making the Right Choice for You
At the end of the day, the polaris 850 vs 570 debate has no single winner. The best machine is the one that perfectly matches your needs, budget, and experience level.
Choose the Polaris 570 if you value reliability, efficiency, and nimble handling for work and technical trail riding. It’s a smart, capable, and incredibly fun machine that will never let you down.
Choose the Polaris 850 if your heart craves maximum power, thrilling acceleration, and the ability to conquer the most extreme terrain without breaking a sweat. It’s a beast that rewards a skilled rider with unmatched performance.
Be honest with yourself about how you’ll use your ATV 90% of the time. Make your choice based on that reality, not on bragging rights. No matter which engine you pick, you’re getting a fantastic machine. Now get out there, get dirty, and ride safe. We’ll see you on the trail!
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