How Fast Do Powersports Vehicles Go? [Complete Guide by Engine Size]
How fast can a dirt bike, ATV, or motorcycle really go?
If you're thinking about getting into powersports or upgrading your ride, you're probably wondering what kind of speed to expect. Engine size plays a big role in performance, but there's more to it than just the number of cc’s. This guide breaks it all down by vehicle type, engine size, and brand so you know what you're getting into.
Let’s kick things off by looking at what engine size actually means.
Understanding Engine Sizes in Powersports Vehicles
When people talk about engine size in powersports, they're usually referring to “cc,” which stands for cubic centimeters. This number tells you how much space the engine has to mix air and fuel before combustion. In general, more cc means more power and a higher potential top speed.
But cc isn’t the only thing that determines how fast a vehicle can go. A 250cc dirt bike and a 250cc ATV won't perform the same way, because their weight, gearing, and design are completely different. The same goes for a sport bike versus a cruiser, even if they have identical engine sizes.
Here are a few key factors that influence top speed besides engine size:
Vehicle weight: Lighter vehicles can reach higher speeds faster
Gearing ratios: Determines how power is delivered to the wheels
Aerodynamics: Affects wind resistance and high-speed stability
Rider weight and terrain: Makes a big difference, especially off-road
Engine size gives you a general idea, but it’s not the whole story. Two-wheel machines like scooters or mopeds perform very differently than quads or four-wheelers with the same engine size.
Dirt Bikes: Speed by Engine Size
Dirt bikes come in a wide range of engine sizes, each offering a different balance of speed, control, and rider skill level. Here’s a breakdown of what you can expect by cc class.
50cc Dirt Bikes
Top Speed: 25–40 mph
These are perfect for kids and absolute beginners. They’re lightweight, easy to handle, and designed with safety in mind. Most 50cc models are automatic and limited in power, which helps riders focus on control.
125cc Dirt Bikes
Top Speed: 45–60 mph
125cc bikes are a solid step up for teens or adults who want something fun but manageable. They have enough power to get through trails and small jumps, but they won’t feel overwhelming. Some models come with manual transmissions, which adds to the learning curve.
250cc Dirt Bikes
Top Speed: 70–85 mph
Now you're getting into serious performance. A 250cc dirt bike has the speed and torque to handle jumps, whoops, and rough trails. These are commonly used in motocross and off-road racing. The actual top speed depends on whether it’s a 2-stroke or 4-stroke engine.
Many brands like Can-Am and Suzuki offer dirt bikes in this range. If you're upgrading to a faster class, it may be time to trade in your current ride for a new bike.
What Affects Dirt Bike Speed?
Stroke type: 2-strokes are typically faster than 4-strokes of the same size
Terrain: Speed drops on rough or hilly trails
Rider size and skill: Bigger riders may need more power to reach top speed
Motorcycles: Engine Size vs. Speed
When it comes to motorcycles, engine size has a huge impact on top speed, but so does the type of bike. A 600cc cruiser and a 600cc sport bike might both have the same engine size, but they’ll deliver very different riding experiences.
600cc Motorcycles
Top Speed: 110–135 mph
A 600cc motorcycle is often the sweet spot between everyday rideability and track-ready performance. These bikes are quick off the line, handle well at high speeds, and can hold their own on highways or backroads.
How Fast Does a Yamaha R6 Go?
Top Speed: Up to 160 mph
The Yamaha YZF-R6 is one of the most iconic 600cc sport bikes ever made. It's engineered for high-performance riding and can reach speeds of 155 to 160 mph under optimal conditions. That’s race-level performance in a mid-size package. Riders love the R6 for its agility, throttle response, and sleek design.
Here’s how 600cc motorcycles compare by style:
ATVs and Quads: What to Expect by Engine Size
ATVs are built for off-road fun, utility, and handling tough terrain—but they can still move fast. Like dirt bikes and motorcycles, their top speed depends on engine size, weight, and design. Let’s break it down.
50cc to 125cc ATVs
Top Speed: 15–40 mph
These models are usually designed for kids and young teens. They’re smaller, lighter, and often come with speed limiters or parental controls. A 50cc quad might top out at 15 to 20 mph, while a 125cc ATV can push closer to 30 or even 40 mph depending on tuning.
250cc and Higher ATVs
Top Speed: 40–70+ mph
Once you get into the 250cc range, you’ll see a big jump in speed and power. These are full-size ATVs made for adults, capable of serious trail riding, sand dunes, or utility work. Some sport models can go even faster with performance upgrades.
What Affects ATV Speed?
Tire size and type: Bigger tires or aggressive tread can lower speed
Weight of rider and gear: Heavier loads reduce acceleration and top end
Fuel and tuning: Aftermarket exhausts and carb tuning can boost performance
Want a quad that’s fast but still manageable? A 250cc or 450cc sport ATV is often the sweet spot.
Speed by Brand: Yamaha, Honda, Polaris, Kawasaki
Not all powersports brands are built the same. Some focus on pure performance and speed, while others aim for durability, comfort, or beginner-friendly handling. Here’s how the top brands compare when it comes to how fast their vehicles go.
Yamaha
Yamaha is known for high-performance sport bikes and dirt bikes. Models like the R6 and YZ250F are built for speed and precision.
Yamaha R6 (600cc sport bike): Up to 160 mph
YZ250F (250cc dirt bike): Around 75–85 mph
Raptor 700R (ATV): Up to 75 mph
Yamaha’s engineering leans toward sportier riders looking for serious speed and agility.
Honda
Honda blends reliability with versatility. Their bikes and ATVs are often tuned for smooth handling and consistent power, not just raw speed.
CBR600RR (600cc sport bike): Around 155 mph
CRF250F (250cc dirt bike): Around 65–75 mph
TRX250X (ATV): Around 50–55 mph
Honda machines are great for riders who want balance, control, and long-term dependability.
Polaris
Polaris focuses more on ATVs and side-by-sides than motorcycles. Their ATVs are built tough, with plenty of torque and off-road capability.
Polaris Sportsman 570 (ATV): Around 65 mph
Polaris Outlaw 110 (Youth ATV): 30 mph (governed)
RZR XP 1000 (UTV): Around 80–85 mph
Polaris machines are known for power in rough terrain, not just flat-out speed.
Kawasaki
Kawasaki makes everything from beginner bikes to top-tier sport machines. They’re especially well-known for high-performance motorcycles.
Ninja ZX-6R (636cc sport bike): Around 160 mph
KX250 (250cc dirt bike): Around 75–85 mph
Brute Force 750 (ATV): Around 70–75 mph
Kawasaki tends to build for aggressive performance and high-end specs.
Here’s a side-by-side comparison table:
Legal and Safety Considerations
Speed is exciting, but it also comes with responsibility. Every powersports rider needs to understand the legal limits and safety practices that go hand in hand with performance.
Speed Limits and Local Laws
While dirt bikes and ATVs are often ridden off-road, many states have laws about where and how they can be used. For street-legal motorcycles, you're subject to standard speed limits like any other vehicle. Off-road vehicles may be restricted to trails, parks, or private land.
Street bikes: Follow posted speed limits and road rules
Dirt bikes/ATVs: Some areas require permits or restrict usage to certain zones
Youth ATVs and dirt bikes: May have age-based restrictions or mandatory speed limiters
Always check with your local DMV or parks department to see what's allowed in your area.
Protective Gear Is a Must
No matter how fast your vehicle can go, safety gear is non-negotiable. At high speeds, even a small crash can cause serious injuries.
Recommended gear includes:
DOT-approved helmet
Goggles or face shield
Gloves and padded riding jacket
Boots with ankle protection
Chest and knee protectors (especially off-road)
Why Speed Isn’t Everything
Pushing a vehicle to its top speed can be fun, but it’s not always practical or safe. Fast acceleration, responsive braking, and good suspension are often more important than raw top speed, especially on uneven or unpredictable terrain.
Want to ride with confidence? Invest in quality gear, know your limits, and choose a vehicle that fits your skill level.
How to Choose the Right Vehicle for Your Speed Needs
Not everyone needs to hit 70 mph on a trail or 160 mph on the freeway. Choosing the right powersports vehicle comes down to matching speed with your experience, riding environment, and comfort level.
Start with Your Riding Experience
If you're new to powersports, it’s smart to start small. A 50cc or 125cc dirt bike or ATV is a great way to build confidence. You’ll still have fun, but without the risk of getting in over your head.
Good beginner picks:
50cc–125cc dirt bikes for kids and teens
125cc–250cc ATVs for new adult riders
300cc–500cc motorcycles for city riding and light touring
Think About Where You’ll Ride
The type of terrain or roads you ride on can totally change what engine size makes sense.
Know Your Priorities
Ask yourself what matters most:
Want high speed and acceleration? Look at 600cc+ motorcycles or 450cc+ ATVs.
Want versatility and trail comfort? A 250cc to 450cc dirt bike or quad might be perfect.
Want to cruise and explore? A mid-size bike like a Honda Rebel or Kawasaki Vulcan will give you smooth speed with less intensity.
Still Not Sure? Visit RideNow Powersports
The best way to know what works for you is to sit on a few models and ask questions at your local dealership. RideNow Powersports has a wide selection of dirt bikes, ATVs, and motorcycles for all experience levels. Our team can help you test ride, compare options, and find a perfect match for how fast (or how fun) you want to go.
Stop by your nearest RideNow Powersports location and find your next ride.