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Fast Dirt Bikes: How Fast Can They Go?

by Jordan Harris
Fast Dirt Bikes

Just like there are the fastest jets, bicycles, and even the fastest cars in the world, there are also fast dirt bikes in the world. Dirt bikes are known for their lightweight design and their well-constructed engines. There are many factors to consider when looking for dirt bikes. One of the deciding factors one should consider when looking to buy a bike is speed. Other factors to also consider are brand performance, overall performance, and budget.

People always want to know what their bikes can do or how far their bikes can go in terms of speed per mile since everyone wants to be fast. While power is a great standard for speed, you should not allow the size of the engine to fool you.

Generally, dirt bikes are built for fun and racing. They are fast and are manufactured to generate top speed. The dirt bikes are generally referred to as off-road bikes that are designed for rough, rock, and muddy terrains.

Apart from being a great bike for off-road riding, they must also show the ability to manage enough speed in miles per hour. Some dirt bikes with off-road abilities can go for a speed of up to 100 miles per hour with a good rider, better conditions, and a level of soundness. Choosing the best and fast dirt bikes can be a difficult process. It is always difficult to know which brand produces the best and which one of them looks cool.

Contents of this article entail.

Fast Dirt Bikes: Two-Stroke VS Four Stroke

Dirt bikes come in two rather different types, two-stroke, and four-stroke. The argument on which is better than the other dates back to when they were introduced to the market. Unfortunately, there has not been a clear winner on which is better.


Each of these bikes has its disadvantages and advantages. Both of these styles appeal to different riders who need different performance, the best choice on which is better revolves around the personal preference of the rider.

It is also very important to know the engine configuration of a dirt bike, how they work, and how they influence your entire ride when you are thinking of investing in speed

Two-Stoke Dirt Bikes

Two-stroke engines are remarkably simple machines that primarily compress and combust. They ignite for a single full revolution of the crankshaft. Between the two engines, the two-stroke engines are the much less complicated option. They are designed to complete their engine cycle in two piston movements, instead of four.

The two-stroke engines will give you more torque at a higher RPM, they combine a handful of steps and complete them in just two movements. They are so logical. The dirt bikes with a two-stroke engine are usually lighter and produce a high-pitched noise. They are also cheaper when compared to four-stroke engines.

Two-stroke dirt bikes are lightweight. This is because their engines are simpler. They also have faster acceleration and have the ability to quickly decelerate. This type of dirt bike is also cheap and easy to clean.

Four-Stroke Dirt Bikes

The four-stroke dirt bike engines are a bit more complicated than their counterparts the two-stroke engines. It takes four strokes to complete the engine cycle. For it to complete the four-engine cycles, it requires more parts, this causes it to be more complex with a heavier engine.

Instead of firing every single revolution of the crankshaft like their counterpart the two-stroke engine dirt bikes, the four-stroke engine dirt bikes have four steps that include, intake, compression, combustion, and exhaust. They usually fire every two revolutions of the crankshaft.

Four-stroke engines dirt bikes take four-piston movements to attain a singular engine cycle. On the first intake, the piston lowers, pulling in a combination of air and fuel. Four-stroke engines are very clean-burning engines from the viewpoint of emission testing.

This is as a result of their high fuel efficiency than the two stroke-engine. They are also heavier which results in a heavier bike with a similar cubic centimeter. They are also harder to clean, this is because of the higher number of parts that they are built of. This four-stroke engine has more torque at a lower RPM.

Dirt bikes with four-stroke engines are heavier than those with two-stroke engines, they make a deeper noise, and they are also cleaner burning when talking about fuel consumption.

Fast Dirt Bikes: KTM 450 SX-F

The KTM 450 SX-F is one of the fast dirt bikes in the market. The bike is a Moto world title hero. It is the best motorbike that is known for thrusting the Motocross Champion under Ryan Dungey who was the rider in the category of the dirt bikes. The 450 SX-F comes with a powerful 449cc engine which weighs just 237 pounds.

Its engine can however power a top speed of 123 miles per hour. The KTM model is equipped with professional technologies that will make your ride much enjoyable. It also has the Keihin management system that allows for electronic fuel injection and a 44mm throttle body.

With the best riders, the KTM 450 SX-F, expects maximum engine performance and immediate progressiveness on roads. For dirt bike riders looking for speed and power, you can go for the KTM 450 SX-F dirt bikes. It is 85 inches in length and has a fuel capacity of 1.8 gallons.

Fast Dirt Bikes: Suzuki DR-Z400SM

The Suzuki DR-Z400SM is the super Moto module of the DR-Z brand’s line. This model has more on-road abilities than off-roading abilities. Despite its on-road abilities, the bike provides exceptional performance on dirt roads if you are dedicated to changing its tires. It is also one of the sturdy and strong dirt bikes.

The model comes with a lightweight chassis and a slim frame. To provide durability as it coasts through the elements, its thin-walled tubing is forged from chromium-molybdenum alloy.

The Suzuki DR-Z is one of the fast dirt bikes that is powered by a liquid-cooled 398cc single-cylinder engine that uses a DOHC system to actuate its four-valve heads. Its 29mm exhaust and 38mm intake valves are large to open the combustion chamber.

Suzuki’s engine produces 39 horsepower and 25-pound feet of torque. The motorbike is comfortable at a regular speed of 94 miles per hour and an acceleration of up to 0 to 60 miles per hour in 4.54 seconds. It can also reach a top speed of 114 miles per hour. It also has a dry weight of 302 pounds. Its engine is capable to maneuver even on uneven surfaces.

Fast Dirt Bikes: Aprilia RXV 5.5

Another one of the fast dirt bikes in this list is the Aprilia RXV 5.5 which is a race-ready bike that jaunts light with 303 pounds. The Aprilia dirt bike is fitted with several technologies that have been developed using the company’s professionalism in the Enduro World Championship.

This bike unlike other bikes comes in with a v-twin engine. It has a powerful 549cc engine that produces 55 horsepower at an overall top speed of 113 miles per hour and an acceleration of 0 to 60 miles per hour in 4.16 seconds.

The 77-degree v-twin offers some magnificent performance information. For instance, the RXV 5.5 boasts a magnificent power output of 70 horsepower. It has a compact and slim frame that makes it very enjoyable to ride in dirt and muddy terrains. This bike has a dry weight of 284.

Fast Dirt Bikes: Husqvarna TX

Husqvarna is one of the known and world-renowned dirt bike brands. The Husqvarna TX 300cc is another fast dirt bikes in the market. It features off-road abilities. It is also light, and fast. The engine of this dirt bike is designed to incorporate swinging mass while a counterbalance shaft decreases vibration.

Husqvarna TX has an electric starter for protection below its engine and the off-road design of this bike is accompanied by a six-speed wide-ratio gearbox. It has a maximum speed of 112 miles per hour. It has a dry weight of 250.2 pounds.

Fast Dirt Bikes: Beta 450RS

This is also one of the fastest dirt bikes that are street legal in the United States. It comes with a top speed of 111 miles per hour. It is slightly faster than the ATK.

The Beta 450RS dirt bike is powered by a liquid-cooled, four-stroke, single-cylinder 449cc engine that produces 43.71 horsepower and 29.59-pound-feet of torque at an average top speed of 111 miles per hour. This type of dirt bike can do 0 to 60 miles per hour in 5.25 seconds.

The bike has a dry weight of 246 pounds; it is kept in control by its cool and lightweight molybdenum steel frame and other extremely light parts. This bike is highly flexible and has an excellent distinction for performance and durability. It is best for people looking for a dual-sport bike that is street legal in all 50 states. Beta 450RS can handle both trail and road cruising.

Fast Dirt Bike: ATK 700 Intimidator

Unlike the KTM and the Husqvarna, the ATK intimidator dirt bike usually goes under the radar. Its general appearance is intimidating. This type of dirt bike delivers a top speed of 110 miles per hour. The ATK 700 Intimidator comes with a 685cc Maico two-stroke engine that is capable of producing 78 horsepower through a five-speed gearbox.

This type of motorbike has a dry weight of 238 pounds. It has a clear edge with the right qualification. The ATK dirt bike will have an unquestionable advantage with the correct upgrade in connection with the fastest dirt bike in the world.

The ATK Intimidator has some standard features such as the 48mm USD Forks Reiger rear suspension, hydraulic clutch, and Brembo brakes.

Fast Dirt Bikes: BMW G650 X-Challenge

The BMW G650 XChallenge was a cool single-cylinder off-roader. It is one of the fast dirt bikes that is designed to specifically bridge the gap between on-road and off-road performance. This type of bike can go through rough terrain with ease.

It is equipped with tough suspension, air damping technology, and other cool enduro equipment. It is a very powerful machine. The 652cc four-stroke single-cylinder engine that produces 53 horsepower at 7000 rpm can propel the bike to an average top speed of 104 miles per hour.

The G650 XChallenge bike can go for up to 0 to 60 miles per hour in just 4.78 seconds. It has a dry weight of 317 pounds which is somehow heavier than the KTM dirt bike.

Fast Dirt Bikes: MUZ Baghira

The Baghira dirt bike is one of the fast dirt bikes in the world. It is a dual-purpose that has been designed with great balance and suspension in mind. It has got tall seats that provide the needed suspension travel and ground clearance to pave your way through the dirt muddy terrains. With the MUZ Baghira, you can ride comfortably when standing because of the wide handlebars and footpegs.

MUZ Baghira is powered by a single-cylinder four-stroke SOHC 5-V Yamaha engine that displaces 650cc that produces 37 horsepower at 6,500 RPM. The bike can go for up to 102 miles per hour. It is the type of bike that can handle all types of terrain.

Its five-valve engine also features water cooling, an electric starter, and a counterbalance. The Baghira bike is also fitted with large Grimeca brakes. Its rear wheels are equipped with a 9.65-inch hydraulic disc brake while its front wheel is equipped with an 11.1-inch single hydraulic brake.

MUZ Baghira can carry two people and it is an ideal option for riders who like to explore the mountain ride over the weekend. Its selling point was the exhilaration on-road and off-road.

Fast Dirt Bikes: Honda XR650L

Another fast dirt bikes in this list that has been up for many years is the Honda XR650L. It is also one of the most reputed dual-sports bikes in the market that is manufactured by the Honda brand. This dirt bike is very popular because of its best performance and handling experience on-road and off-road conditions.

The XR650L offers excellent flexibility, is so reliable, and practically indestructible. They also offer excellent value for money.

The Honda XR650L dirt bike comes with a long suspension, off-road tires, and a better ground clearance. It is powered by the 644cc air-cooled four-stroke single-cylinder engine that produces 40 horsepower and 47.2-pound-feet of torque at an average top speed of 98 miles per hour or even more with some modifications. It is a flyer that can also go for 0 to 60 miles per hour in 5.83 seconds.

XR650L is a heavy dirt bike with a dry weight of up to 349 pounds. It is designed for the street, comes with the turn signal, mirrors, license plate, light, and more.

Fast Dirt Bikes: Kawasaki KLR650

The Kawasaki KLR60 is a dual-sport bike manufactured by the Kawasaki brand. This is also one of the fast dirt bikes that offer a top speed of 98 miles per hour. It has a dry weight of 388 pounds. This model is a friend to street riders and those who have chosen off-road riding as their daily activity.

The KLR650 can reach up to 0 to 60 miles per hour in 6.04 seconds. It comes with a very powerful engine. It is built with a four-stroke, single-cylinder, liquid-cooled DOHC engine with a four-valve ability.

Fast Dirt Bikes: Honda CRF450R

The Honda brand features two of its models in this list, the Honda XR650L and the Honda CRF450R. The CRF450R is also one of the fast dirt bikes on this list. This is one of the super-fast dirt bikes that can handle all kinds of terrain. It comes with a top speed of 87 miles per hour.

Mostly known for its ability to tackle rough and uneven terrains. It is agile, responsive, easy to handle, and with it, you are sure to win any race. The Honda CRF450R is powered by a 449cc liquid-cooled engine. With the new and latest updates made, it comes with a new exhaust, narrower valves, and a new transmission ratio, and general weight loss.

Fast Dirt Bikes: Yamaha YZ450FX

The Yamaha YZ450FX is also one of the fast dirt bikes in the world. It is an enduro-type racing motorcycle with an excellent mixture of lightweight, nimble handling, agile, and power. This type of dirt bike has a 449cc liquid-cooled DOHC engine with a five-speed transmission gearbox.

It also has some standard features which include the dry-sump lubrication system, electric starter system, and YZ-F Derived cooling system, lightweight features like aluminum handlebars and pegs. It has a class-leading suspension. They are always ready to take on the track.

Fast Dirt Bikes: Yamaha WR

The Yamaha WR is promulgated as the peak of reliable performance by Yamaha. It has a capacity of 250cc or 450cc and a four-stroke engine.

The dirt bike can go for a top speed of 88.8 miles per hour. This dirt bike can hit up to 0 to 60 miles per hour in just 8.71 seconds. It can go both on-road and off-road.

Fast Dirt Bikes: Yamaha YZ250F

The Yamaha YZ250F is a high-performance dirt bike that was designed to provide a maximum balance of speed and stability. It has an aluminum chassis and suspension that have been tuned for maximum cornering accuracy.

It comes with a 250cc engine that produces 39 horsepower and 18 feet pounds of torque. The bike has a dry weight of 233 pounds. Its fuel tank capacity is 1.6 gallons.

Fast Dirt Bikes: How To Be Safe

By not being mindful and prepared on how to ride your dirt bike, your life can easily come to an end. Guaranteeing your safety while on the off-road motorbike suggests ensuring you know how to ride your bike. You should also do a security assessment before your ride. You should also use correct safety equipment. Here are some of the ways to be safe.

Use Helmet

You should use a helmet that fits snugly on your head. Consider looking for a helmet with the label ‘’DOT’’ on it. This shows that the helmet has been crafted to U.S. Department of Transport standards.

Make Sure Your Clothes Are Not Loose

Loose or uncomfortable clothes may hinder the functioning of your bike. Always wear long pants to cover your legs and never wear scarves. Also, remember to use a set of safety glasses if your helmet does not have a faceguard.

Inspect The Manufacturer’s Site

Don’t forget to check out the owner’s guide for your dirt bike, cover to cover. If you don’t have the guidebook for your bike, then you should inspect the site of the manufacturer.

Take a safety course to find out a suitable bike handling, steering, stopping, and general upkeep of the bike. Your state’s Department of Motor Vehicle or Park and Recreational Department is always a good place to find dirt bike safety courses.

Avoid Riding On The Road

Unless you are going to cross the road to the other trail, avoid riding on the road. Your dirt bike is not meant to be ridden on streets, roads, or even highways. You may not have the proper lighting or safety features to ride on roads.

Choose a bike that is the right size for you, so you may be in control of the bike all the time. Riding a bike that is too long or even too small may be harder to control the brakes and steers the bike.

Inspect The Bike Before Every Ride

You should check the tire pressure to make sure the tires are properly inflated. Also, test the brakes to make sure they are working. You should also give other controls a quick test to make sure they are in working condition.

Ride in control at all times. Avoid riding in conditions and on terrains that seem beyond your ability or the condition that pose risks. The conditions include mud, standing water, snow, rain, and steep hills. Ride on the designated area only and at a safe speed.

Fast Dirt Bikes: Final Thoughts

Now that you have known some of the fast dirt bikes in the world, you should now go get one that is ready to fire and handle any terrain whether on tracks or trails. The decision on which one to go for solely depends on you to make.

The dirt bikes that have been covered in this article have got a powerful engine that can make them tackle all kinds of trails. In our list, the KTM450SX-F is in the first position, it weighs 450 pounds of dry weight at a top speed of 123 miles per hour.

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