skip to Main Content

Fastest Dirt Bike in The World (KTM 450 SX-F)

Fastest Dirt Bike

While there are a lot of speedy vehicles out there, you may be wondering which dirt bike is the fastest. For those of you who are getting a bit impatient, I will get right to the point. The fastest dirt bike is called the KTM 450 SX-F and was made by KTM.

KTM 450 SX-F – Top Speed: 123 mph

Originally released in 2007, the KTM 450 SX-F was a great way for KTM to enter the very popular 450 cc class of dirt bikes without breaking ranks from its other models. The bike incorporates over two decades of street bike development and design into its chassis, while still maintaining a true motocross design with its engine configuration. Its weight is kept down by using lightweight aluminum throughout the frame (even the swing arm). A six speed transmission with reverse gear allows for short shifting while still having the range needed to get through most terrains.

The bike is designed for dirt riding and the engine found on the bike produces 45 HP of power and has a 6 speed gearbox that allows for smooth acceleration up to 7000 rpm. The brakes are ABS front and back, while the suspension system provides upright posture while cornering at high speeds. The bike is also lightweight for its class and size, weighing in at only 275 lbs. The chassis of the bike is designed with a steel frame and aluminum handlebars.

With a front end geometry that helps it corner like a motocross bike, and a rear end that allows it to be driven and not fought against in turns, the KTM 450 SX-F is able to ride fast over all types of terrain. In the mud, dirt, or sand it easily takes the power with its lightweight chassis, but can also be pushed around with ease. The long travel suspension provides for a stable platform while riding in more extreme conditions.

Fastest Dirt Bike In The World – Extras

Anyone who sets out to buy a dirt bike these days faces a lot of competition from other brands in the same market such as Suzuki, Kawasaki, Honda, and Yamaha. They all have their own features that are appealing to both newbies and professionals alike. Each one contrives its own idea of what makes a bike fast but in the end it all comes down to personal preference.

It is important for everyone to know what type of bike they want for themselves. All bikes are not made equal and it would be best if you could have more information about each one before making your decision. A bike has a certain purpose and it is very important that you research its purpose before buying. Some other top fastest dirt bikes are as follows:

1. 2017 Husqvarna 701 Enduro R – Top Speed: 120 mph

One of the fastest dirt bikes is the 2017 Husqvarna 701 Enduro R. It is generally a street-legal dirt bike with a powerful engine. This dirt bike is made in Sweden. It has a cam-shaft and four-stroke engine. The Enduro R has 570cc (31 cubic inches) displacement, six gears, and has an estimated top speed of 120 miles per hour!

It is still being tested in competition but it looks like it will be one of the fastest. A new version of the Enduro R called the 701 Supermoto was released in 2018. The price of the dirt bike is $9,999. The new bike weighs lighter and has more power. The weight is now 177 pounds and the engine on the dirt bike has been upgraded and is now 774cc (48.7 cubic inches).

2. Aprilia RXV 450 – Top Speed: 114 mph

The Aprilia RXV 450 is designed to be stable at high speeds. The bike has a fairing that extends down the sides, covering the engine and partly shielding legs from wind when the motorcycle races at top speeds. That shield helps the dirt bike maintain stability along with its low center of gravity. A lower center of gravity helps keep the weight over the front wheel which in turn helps prevent fishtailing during sudden manuevers.

The performance of this dirt bike is very good. It climbs steep hills with relative ease, and stays fairly stable on steep descents as it bounds over rocks and crevices without losing balance too much. The Aprilia boasts a v-twin engine that results in impressive speeds that make it come close to being the fastest dirt bike.

3. Beta 450 RS – Top Speed: 110 mph

The Beta 450 RS comes with the amazing features that you would expect from the most advanced two wheeler machine in its class. It has a four stroke, DOHC engine with direct injection and continues the tradition of being one of the hottest machines for off-roading and fun.

The Beta 450 RS dirt bike is an adventure-inspired vehicle that’s fun to ride. It’s great for adventure seekers and the people who want to get off-road and enjoy everything that Mother Earth has to offer. It also comes in a variety of colors and with a range of features such as a front suspension system, frame protector, under guards, storage compartments, hand grips on the handlebars, and hubs with rapid reflex bearings.

The Beta 450 RS has an advanced handlebar mounted throttle control system which allows for precision adjustment to suit varying terrain. It has an advanced instrument panel boasting a speedometer, fuel gauge, coolant temperature indicator, and gear position indicator along with warning lights to alert you to various situations such as low battery voltage or if brake pad wear is becoming excessive.

4. Suzuki DR-Z400 – Top Speed: 94 mph

The Suzuki DR-Z400 is a motorcycle that sets its sights on speed. There is also a less expensive version that was made for kids. Both versions have 15 inch (380mm) wheels which are made of plastic and offer the same features as other bikes in Suzuki’s lineup. The engine is 4 stroke, air cooled and liquid cooled and has a bore and stroke of 56 x 50 mm. This means that it can produce up to 35 HP power with an output of 18 BHP at RPMs. It is also able to reach speeds of 0 to 60 mph in 2.7 seconds and 0 to 100 mph in 7.0 seconds.

5. Yamaha KX450F – Top Speed: 94 mph

The KX450 and was made in Japan by Yamaha. It can go from 0 to 60 miles per hour in 2.5 seconds. The engine was made using Yamaha’s Advanced YZ450F technology that started back in 2004. They released the bike with an air cooled, single cylinder, DOHC with 4 valves per cylinder.

The bike measures up at 44 inches (1120mm) high by 26 inches (660mm) wide by 33 inches (845mm) deep and weighs in at 102 pounds (46kg). It has a fuel capacity of 3.4 gallons and is 175 pounds (79kg).

Should You Ride the Fastest Dirt Bike

If you want a fast bike, it’s not easy to pick the right bike but you have to do your research first before making your decision. You don’t want to get stuck with something that will only make you frustrated if you can’t fully enjoy riding it.

It’s best if you try to test ride different bikes before making your purchase. You may also want to talk to friends or family members who own bikes and ask them for advice on what they think is the best type. The best thing about dirt bikes is that they are quite versatile as they can be used off-road and on the track, so no matter what kind of rider you are, there’s something for everyone. Some riders may only use them for racing while others who like to ride on trails or go exploring new territories.


Over the years, I have grown a passion for dirt biking and all the joys it brings. Now I want to share my knowledge with as many people as possible.

Back To Top
×Close search