Properly selecting the right dirt bike size based on your height and size is essential to truly get the most out of dirt biking. We explore this with our dirt bike size chart of 80 popular dirt bike brands, but we also go deeper with dirt bike size chart for your age and height.

Most likely the first thing on your mind when deciding to buy a dirt bike is all the fun and excitement you’re gonna have. It’s perfectly understandable and, after all, the thrill of riding is what made us all fall in love with dirt bikes in the first place.

Nevertheless, your main concerns when choosing the bike for you or your kid should be safety and comfort. Being safe while riding is not something that should be taken lightly.

Although dirt bikes usually are smaller and pack less power than larger road motorcycles, dirt bikes still have a really good power to weight ratio. Likewise, if you’re not comfortable on your dirt bike, it doesn’t just feel unsafe, but also greatly reduces your enjoyment while riding your dirt bike.

 I will repeat, you need to properly select your the right dirt bike based on your height and size, as it is essential to get the most out of dirt biking. The amount of dirt bike control you’ll have is directly related to these factors.

Lots of people, when they talk about the dirt bike’s size, they refer to the size of the engine. Of course, having an engine packing the right number of cubic centimeters (and horsepower) is very important, but the overall dimensions of the bike, seat height, and wheel size are actually more crucial to your comfort and safety.

The size of the engine is not necessarily related to the bike’s height. Even the biggest dirt bike size model can have a small engine. Some smaller bikes have engines with higher cc measurements, so the shorter riders can have more power if they like.

How to pick the right dirt bike size

 There’s no universal dirt bike frame size and to the answer question of how to pick the bike of the right size. Depends on what you plan on doing with the dirt bike. 

Each of us has different body types and builds. Some have shorter legs or longer arms. Although you can get the idea of what you need by doing some research, the biggest mistake you can make is buying a bike that’s either too big or too small.

Go to the dealership, sit on the dirt bike or have your kid try it and check to see how comfortable it is. Sitting on the dirt bike will help you get a feel for the bike and get a sense of weight distribution. A general rule is that when you sit on the bike the balls of your feet should touch the ground.

To be more precise, you should touch the ground with your toes and feet cushions, while your heels are up in the air. Place all of your weight on the motorcycle. Try not to carry any of your weight by your legs.


This may feel weird to many beginners but, it’s important to be able to control the bike by putting your feet down. If your whole foot is on the ground, it can lead to a foot injury while riding this also means that you are too big for the dirt bike.

Also, this means that there is more weight on the suspension which will cause you to feel every rock or bump. Too much weight and you can bottom out the rear shock and de wieght the front tire making it harder to conrtol the dirt bike . While you’re at it, make sure to check the distance between seat and hand controls.

Not being able to properly reach controls doesn’t just feel awkward, but is an accident waiting to happen. When looking for a dirt bike make sure you wear the boots you plan to wear while dirt biking riding, or at least similar.

Not being in your riding gear is a common mistake for many. Bear in mind that boots can add a couple of inches to your height, so the bike that seemed too high at first, can be just right.

If you are buying a dirt bike for your child, it may not be a bad idea to go a bit higher. Kids can grow a lot during just one year and you don’t want to buy another motorcycle in such a short period of time. Just make sure that your son or daughter has enough contact with the ground to be able to successfully control the bike and feel safe.

Dirt Bikes Size Chart vs Age and Height

Every manufacturer publishes dimensions of their bikes. You can compare the seat heights against your inseam to have an approximate idea about the right fit for you. In order to get a clearer picture of what size of the bike you need, take a look at the chart of bike sizes according to your height. This should help you narrow down your choices before picking the perfect ride.

See our table of dirt bike sizes based on age, body height and seat height. To be more helpful we included metrics too.

AgeBody Height (Inches)Body Height (CM)Seat Height (Inches)Seat Height (CM)
3-6 year olds2’1190-110cm23-24″58-61cm
5-8 year-olds3’11120cm23-2558-64cm
8-9 year-olds4’4133cm24-26″60-66cm
9-10 year-olds4’7140cm24-26″60-66cm
10-12 year-olds4’9145cm26-31″66-79cm
12+ years5’2″ 157cm31-35″79-89cm
12+ years5’4″162cm 33-36″84-92cm
12+ years5’6167cm 34-37″86-94cm
12+ years5’8172cm 34-38″ 86-97cm
12+ years5’10178cm 35-39″89-99cm
12+ years6″182cm 37.5″+95cm +
IMG 1206 scaled

Dirt Bike Wheels Size Matters

Some of the dirt bikes you’ll look at have bigger wheels and some have smaller wheels (ex. big wheel), especially when it comes to kids’ dirt bikes. Some dirt bikes will come in both versions for the same model. This comes handy if, for example, a kid is of lighter weight, but needs a bigger bike. The bigger the wheels the better it will roll over obstacles. 

Bear in mind that this chart, due to the different builds, should serve as guidance when shopping for a dirt bike. Most of all, it’s a good place to start when planning a purchase. To help you we made a list of the most popular dirt bikes from renowned manufacturers on the market for each class of height.


Dirt Bike Manufacuture models and sizes

Here are some examples of kids, Youth, and adult dirt bike sizes. Contine reading below to check out our size chart on the best dirt bike models, with details on seat height and engine power.

Kid and Youth Dirt Bike Size Models

    • Yamaha PW50,
    • Yamaha TTR50E,
    • Yamaha TTR110E
    • Yamaha YZ65,
    • Honda CRF50F,
    • Honda CRF110F,
    • Suzuki RM-65,
    • Suzuki DR-Z50,
    • Suzuki DR-Z70,
    • KTM 50SX,
    • Husqvarna TC 50,
    • Husqvarna TC 65,
    • Kawasaki KLX 110

      Youth and Adults Dirt Bike Size Models

        • Yamaha TT-R125LE,
        • Yamaha YZ12,
        • Yamaha YZ85,
        • Suzuki DR-125L,
        • Suzuki RM85,
        • KTM 85SX,
        • Husqvarna TC 85,
        • Kawasaki KX 85,
        • Kawasaki KX 100,
        • Kawasaki KLX 140

      Adult Dirt Bike Size Models

        • Yamaha YZ125,
        • Yamaha YZ250X,
        • Yamaha YZ45F,
        • Honda CFR250XLR,
        • Honda CRF450X,
        • Suzuki RM-Z250,
        • Suzuki RM-Z450,
        • KTM125SX,
        • KTN150SX,
        • KTM 250SX,
        • KTM350SX-F,
        • KTM 450SX-F,
        • Husqvarna TC 125,
        • Husqvarna TC 250,
        • Husqvarna FC 350,
        • Husqvarna FC 450,
        • Kawasaki KX 250F,
        • Kawasaki

      Dirt Bike Size Chart of Popular Brands

      In the table below we have detailed information on around 80 dirt bike sizes, including seat heights and engine sizes of the most popular dirt bike brands

      KTM 50 SX26.18 in66550
      HUSQVARNA TC 5026.18 in66550
      COBRA CX 50SRX (king)26.77 in68050
      KTM 65 SX29.53 in75065
      HUSQVARNA TC6529.53 in75065
      YAMAHA YZ6529.7 in75465
      KAWASAKI KX 6529.9 in75965
      COBRA CX 6530.00 in76265
      Kawasaki KX 8532.7 in83085
      KTM 300 XCW TPI32.7 in830300
      Yamaha YZ 8533.1 in84085
      SHERCO 300 SEF RACING33.1 in840300
      SUZUKI RM 8533.5 in85085
      Husqvarna TC 85 19/1634.45 in87585
      BETA 390 RR RACE EDITION34.45 in875390
      KTM 85 SX 19/1635.04 in89085
      HUSQVARNA FE 35035.04 in890350
      BETA XTRAINER 30035.83 in910300
      BETA 300 RR36.61 in930300
      BETA 250 RR36.61 in930250
      BETA 200 RR36.61 in930200
      BETA 125 RR36.61 in930125
      Husqvarna TC 25037.01 in940250
      Husqvarna TC 12537.01 in940125
      BETA 350RR RACE EDITION37.01 in940350
      BETA 390 RR RACE EDITION37.01 in940390
      BETA 250 RR SEF RACING37.01 in940250
      HONDA CRF 450X37.01 in940450
      Kawasaki KX25037.4 in950250
      HUSQVARNA TX300 i37.4 in950300
      SUZUKI RMX 450Z37.4 in950450
      KTM 450SX-F37.40 in950450
      KTM 250SXF37.40 in950250
      KTM 250 SX37.40 in950250
      KTM 125 SX37.40 in950125
      KTM 450 XCF37.40 in950450
      HUSQVARNA FX 45037.40 in950450
      SHERCO 450 SEF FACTORY37.40 in950450
      KTM 350 XCF37.40 in950350
      SHERCO 300 SEF FACTORY37.40 in950300
      HUSQVARNA FX 35037.40 in950350
      KTM 250 XCF37.40 in950250
      SHERCO 300 SC37.40 in950300
      SHERCO 250 SC37.40 in950250
      YAMAHA WR 450 F 202137.40 in950450
      HUSQVARNA TE 300i37.40 in950300
      SHERCO 300 SE FACTORY37.40 in950300
      HUSQVARNA TE 250i37.40 in950250
      SHERCO 250 SE RACING37.40 in950250
      HUSQVARNA TE 150i37.40 in950150
      SHERCO 125 SE FACTORY37.40 in950125
      HUSQVARNA TE 150i37.40 in950150
      YAMAHA YZ450 FX37.6 in955450
      Yamaha YZ450F38.0 in955450
      Kawasaki KX45037.6 in955450
      Suzuki RMZ 25037.6 in955250
      YAMAHA YZ250FX37.6 in955250
      HUSQVARNA FC 25037.6 in955250
      YAMAHA YZ 25037.6 in955250
      YAMAHA WR 450 F 202137.6 in955450
      YAMAHA WR 250 F 202137.6 in955250
      HONDA CRF 450 RX38 in955450
      Suzuki RMZ45037.8 in960450
      Honda CRF250R37.8 in960250
      KTM 300 XC TPI37.8 in960300
      KTM 250 XC37.8 in960250
      HONDA CRF 250R37.8 in960250
      KTM 250 XCW TPI37.80 in960250
      KTM 150 XCW TPI37.80 in960150
      HONDA CRF 450X37.9 in962450
      HONDA CRF 250 RX38.0 in965250
      Honda CRF450R38 in965450
      SHERCO 250 SEF FACTORY38 in965250
      Yamaha YZ250F38.2 in970250
      Yamaha YZ25038.2 in970250
      BETA 300 RR RACING EDITION38.2 in970300
      SERCO 450 SEF RACING38.2 in970450
      Yamaha YZ12538.6 in980125
      KTM 350 XCW38.6 in980350

      I hope our sizing chart for dirt bikes is helpful. We tried to include the best dirt bikes, including how tall their seats are, both in inches and millimeters and also the engine size in cc.


      Dirt Bike Height Adjustment

      The dirt bike manufacturers, of course, can’t make custom rides for each individual. Typically, dirt bike manufacturers land in the middle regarding size and height. This stock size is 150-180lbs and 5’9″ to 5’11”. Fortunately, there are ways to adjust your dirt bike’s height.

      With a few simple tricks, you can lower or raise the height. Also, this can save you from buying a new bike Avery time your kid has overgrown the old one.

      Lowering the Dirt Bike Size

      The simplest way to lower your bike is to just cut the foam out of your seat. The seat may not be as comfortable anymore, but this could give you more confidence when riding.

      Another thing you can do is replace the foam. The softer foam will compress under the weight of the rider and lower the overall height. Better foam compressing can also be achieved by drilling holes in a seat.

      If you don’t feel like using the first method, you can replace the existing seat with a new one. Finding a suitable seat with less padding can help you reach the ground easier.

      Correct SAG settings

      A great way to reduce the height of your dirt bike is to tinker with the sag settings by adjusting the spring of the rear suspension to find the height that perfectly fits you. This way you can lose a couple of centimeters. This may have some effect on the steering.

      MAKE SURE THAT YOU SET UP THE SAG CORRECTLY. Consult the owner’s manual for these settings.

      Raising the Dirt Bike Size

      If you need more height, instead of using replacement softer foam, you can add a thicker and harder one. This can give you up to two extra inches.

      Also, the same way you can use sag settings to lower your bike, you can adjust it to make it higher.

      You can also purchase a taller seat. Keep in mind if you change the sag settings it will effect how the dirt bike controls. Also, putting bar risers might feel more comfortable, they also effect the handling of the dirt bike. 

      Owning a dirt bike can bring you a limitless amount of fun and excitement. But, buying one that doesn’t suit you can be a great risk. For you or your kids. Don’t ruin what can be a source of great joy in your life by being careless.

      Today, more than ever, there is a never-ending array of dirt bike manufacturers, models, and types to choose from. Be patient when shopping for a dirt bike. Try hard to find the one that suits you and your skill level.

      Don’t be afraid to ask for a bit of advice and try as many dirt bikes as it takes to get to the right one. Smaller doesn’t necessarily mean safer. Hopefully our dirt bike size chart helped you with the choice of choosing the right dirt bike for your height and age.

      Besides your height and dirt bike size, there are other important factors to consider. Your weight, age, and most of all, experience.