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Average Dirt Bike Weight (With 7 Examples)

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Knowing the average dirt bike weight may not require further search, especially now that you’re here with me. I’ve taken the pain to sieve the essentials of the weight range for a dirt bike.

Whether you’re looking for a specific weight limit for adult dirt bike or children’s dirt bike doesn’t matter. You have all the information needed for average dirt bike weight in general.

To put it more simply, a dirt bike is expected to averagely weigh about 215 pounds (98 kilograms), with fuel inside. However, the same cannot be said for an empty-filled bike. Hence, there’s every chance of weight varying.

However, to determine the bike’s weight, you can navigate to the manufacturer’s website to learn more about it. Practically, the information you’ll get will center more on fuel-filled bikes. Some makers go as far as weighing the bike on a scale – a method that has overly proven to be questionable.

Dirt BikeWeight (Pounds & Kilograms)
Yamaha YZ 125207 pounds/ 94 kg
Kawasaki KX250F223 pounds/ 101 kg
KTM 350 SX-F 221 pounds/ 100 kg
Yamaha 250 WRF 253 pounds /115 kg
Suzuki RM-Z450 247 pounds/ 112 kg
Honda CRF250 224 pounds/ 102 kg
Husqvarna FC350 100 pounds/ 45 kg

Here are a few questions I’ll start with: How do you make your dirt bike lighter or more massive, and what is the difference between the two? Is your dirt bike street legal? What is the dry or wet weight?

But then, there are specific weights that are attributed to bikes. These motorcycles are designed exclusively for these purposes; in different brands, you can find the vehicle that best suits your needs.

Also, the suspension of the dirt bike is much harder. Its front fork has a shorter trip, a characteristic that makes it more agile but more unstable at high speeds, that is surmountable depending on the pilot’s skill. Among other differences, its rudder is more extensive, its seat position is much lower, and its brakes have more perforations for more cooling.

What exactly is the ideal weight for an average dirt bike, and how can it be achieved?

1. Yamaha YZ 125 – 207 pounds/ 94 kg

The Yamaha YZ125 is an ideal motorcycle to start in motocross and the most experienced to enjoy the joy of its 125 cc 2T engine, equipped with the Yamaha YPVS exhaust valve, a gearbox with six ratio gears.

An inverted KYB fork with 48mm bars stands out in the suspension section. This is the same material used by 4T models and comprises an open-air/oil system that prevents air from penetrating the cartridge. The valve versions also receive the rear damping system, which gets a new swingarm and a different shock absorber. The footrests are wide enough that the rider achieves an aggressive position and achieves excellent control. The chassis is like that of the 250 2T, a dual semi-cradle made of aluminum, very light, which delivers weight of 94 kg.

2. Kawasaki KX250F – 223 pounds/ 101 kg

Kawasaki renews its KX250F after a couple of years with hardly any changes to its little motocross 4T. The changes introduced to affect the motor, now more powerful, and the cycle part. The new cylinder of the KX250F has a larger diameter, but less stroke, which allows for more brilliant lap climbs, one of the objectives of this edition.

The announced power increase is especially noticeable from 10,000 rpm. And it is that Kawasaki has taken advantage of its experience in the Superbike World Championship to apply some technical solutions that were already incorporated in the 2019 KX450F. The throttle body has also been increased, with a weight of 100.5kg, which becomes 44 mm by 43 of the previous one.

The cycle part has also been extensively renovated, starting with the aluminum perimeter chassis, which now offers more rigidity than the previous one. It launches a KYB fork with 48 mm bars to achieve a smoother response and firmness when receiving the jumps.

The rear shock, KYB likewise, features a revamped Uni-Track system that increases control and precision. Lastly, braking has improved remarkably thanks to the larger diameter -250mm rear disc, which joins the 270mm front-drive, which receives new pads.

3. KTM 350 SX-F – 221 pounds/ 100 kg

Can you have everything? Ask Tony Cairoli, who since 2010 has used the KTM 350 SX-F to be a motocross world champion for five consecutive years. The agility of a ‘two and a half’ and the power of the ‘four and a half’ are combined in this intermediate model.

The KTM 350 SX-F is the perfect bike for the MX1 class, a crossover that combines the muscle of the 450 with the agility of the 250. The engine has a compact and lightweight design that uses a multifunctional balance axle to compensate for the masses. This is also responsible for driving the water pump and the distribution chain.

The traction control, the exit assistance system and the electric start make up first-rate equipment. In 2020 it hardly receives changes after numerous improvements in 2019, when the assembly of a newly designed DS clutch was mounted, new transmissions, and improvements in electronics. 0 350 SX-F’s fork is a 48mm diameter WP XACT AER with air and oil in separate circuits. The WP XACT DCC damper is fully adjustable and works through a link system.

4. Yamaha 250 WRF – 253 pounds /115 kg

The Yamaha  WR250F has been completely renovated in 2020, with a new engine, chassis, and suspensions, among other changes, although it remains a closed-circuit competition bike. One novel element to highlight is the lighter and more compact starter, which is powered by a small lead-acid battery, and the clutch reinforced to withstand the demands of d biking and being lighter. The six-speed gearbox is open-ratio. The rear shock is also derived from the YZ250F, with a more energetic, lighter spring and a more substantial capacity bottle. It also increases the capacity of the fuel tank in half a liter, which becomes 7.9 liters.

The WR250F 2020 debuts plastics, with new side panels, radiator guards, and rear fenders, offer a more streamlined image. The lighthouse is also of a new design, located in a lower position and closer to the pilot.

5. Suzuki RM-Z450 – 247 pounds/ 112kg

The 2018 Suzuki RM-Z450 receives numerous improvements to achieve more power, a more usable engine, better maneuverability, and more forceful braking. All this has been achieved thanks to the new management of the traction through the modifications introduced in the accelerator and the electronics, a new chassis, and a new swingarm, a modern shock absorber, and the new Bridgestone tires.

The RM-Z450 2018 maintains the output assistant with two selectable modes depending on the type of terrain and being able to disconnect, which allows better control of its power. The chassis, of the new invoice, is made of aluminum, like the swingarm, allowing the new design to distribute weight better and lighten the entire set. Also, the fork is spring-loaded, which has been modified. The front disc grows in size from 250mm to 280mm. Finally, the aluminum tank is replaced by a resin one, much lighter.

6. Honda CRF250 – 224 pounds/ 102 kg

The most significant improvement of the 2019 CRF250R is in the engine since it has been possible to increase the torque at low speed without sacrificing any power at maximum speed. This has been accomplished with a smaller injection body, with the intake and exhaust ports also revised. The exhaust’s right elbow is 50 mm shorter to maintain high rpm performance.

In the cycle part, the assembly of a new front brake caliper that varies the diameter of one of the pistons to use a lighter brake caliper body and low expansion hoses stands out. This seeks to improve the touch and also the stopping power. The new Renthal Fatbar handlebar reduces weight on the steering and is also adjustable in up to four positions.

7. Husqvarna FC350 – 100 pounds/ 45 kg

Husqvarna FC 350 is a very balanced motorcycle, with the agility of the 250 4T and with a power close to that of the 450, which allows the amateur to be enjoyed and the professional to be quite competitive. It hardly received any changes in 2020. In 2019, it received a new blue painted chassis that was lighter and more rigid than the previous one, making it a very stable motorcycle at high speed on the straights and with excellent shock absorption. Last year it also debuted a reasonably light and robust polyamide and carbon fiber subframe. It is a low bike in which ergonomics has been taken great care, with a seat of excellent grip and comfort and with a very modern aesthetic.

The cycle part is completed with a WP XACT AER 48 fork with independent air and oil circuits and a fully adjustable shock absorber, also WP, both fully adjustable components. The brakes are still Magura, parts that were introduced as a novelty in 2018. The aluminum swingarm has an adjustment range with an additional 5 mm, so the wheelbase can be increased to achieve more stability on fast tracks.

As for the engine, the Husqvarna FC 350 mounts a mighty -58 HP- and light -27.2 kg- propeller with broadband of useful revolutions power. It has an electric start, traction control, and a system for selecting power maps on the handlebars.

Frequently Asked Questions

Q: How much does a 125 dirt bike weight?

For the 125 class on dirt bikes, the actual heaviness is up to 195 pounds or even more.

Q: Does the weight of a dirt bike guarantee more swiftness?

There’s no direct answer to this question. While it is possible that a lightweight dirt bike can be faster, the rapidity can also depend mostly on the rider piloting it.


Finally, one last aspect to keep in mind when practicing motocross is having some insurance that guarantees medical assistance in the event of an accident… Without this, the circuits do not even allow us to ride.

The most economical option is to take out specific accident insurance for the practice of motocross on private courses offered for an annual fee from 100 euros onwards.

It is also possible that, in some circuits, they provide us the possibility of taking out insurance for a single day. However, the price is proportionally higher – around 20 euros for a day.

There is also the possibility of obtaining a competition license, either regional or national, which will also allow us to participate in competitions, although its price is higher.

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