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This is the easiest place to manage dirt bike sizing.
I’ve spent hours collating data on all the main manufacturers that make dirt bikes.
You can go to my interactive sizing guide below and filter by what measurement is important.
Price, seat height, engine size, get the idea?
But… If you need more help stick around.
Being comfortable in the saddle is important.
When you are sitting on your bike the balls of your feet should be on the ground.
This is real important with young kids as they need to be able to support their legs when stopping.
See my chart below that has recommended seat heights by inches and also engine size.
Once you have an idea of what size bike you need you can go to the chart and filter by bike size.
With a selection of bikes that have the size you want you can then check what engine sizes are available.
To help manage finding the right power range I have put all bikes into riding ability.
This will be either beginner or intermediate.
I haven’t included higher performance bikes as this is beyond the scope of this blog.
Sizing chart 2019 Update
Honda CRF50F Trail 50 Four 21.6 $1500 Begin Honda CRF110F Trail 110 Four 26.3 $2250 Begin Honda CRF125F Trail 125 Four 29 $2700 Begin Honda CRF150F Trail 150 Four 33 $3700 Begin Honda CRF230F Trail 230 Four 34.5 $4200 Begin Honda CRF250R MX 250 Four 37.8 $7144 Inter Honda CRF250X Enduro 250 Four 37.7 $7599 Inter Honda XR650L Dual 650 Four 37 $6999 Inter Honda CRF250L Dual 250 Four 34.4 $5199 Inter Honda CRF250L Rally Dual 250 Four 35.2 $5949 Inter Honda CRF125F Trail 125 Four 28.9 $3099 Begin Honda CRF125F BW Trail 125 Four 30.9 $3499 Begin Honda CRF150F Trail 150 Four 32.8 $3799 Begin Honda CRF230F Trail 230 Four 34.6 $4349 Begin Kawasaki KLX110 Trail 110 Four 26.8 $2299 Begin Kawasaki KLX110L Trail 110 Four 28.7 $2499 Begin Kawasaki KX65 MX 65 Two 29.9 $3699 Inter Kawasaki KLX140 Trail 140 Four 30.7 $3099 Begin Kawasaki KX85 MX 85 Two 32.7 $4349 Inter Kawasaki KLX140L Trail 140 Four 31.5 $3399 Begin Kawasaki KX250F MX 250 Four 37.2 $7749 Inter Kawasaki KLX140G Trail 140 Four 33.9 $3699 Begin Kawasaki KX100 MX 100 Two 34.3 $4599 Begin KTM 50 SX Mini MX 50 Two 21.97 $3020 Inter KTM 50 SX MX 50 Two 26.93 $3600 Inter KTM 65 MX 65 Two 29.53 $4800 Inter KTM 85 SX sm MX 85 Two 33.66 $5700 Inter KTM 150 SX MX 150 Two 37.8 $7900 Inter KTM 125 SX MX 125 Two 37.8 $7695 Inter KTM 250 EXC-F Enduro 250 Four 37.8 $9349 Inter KTM 250 XC-F Enduro 250 Four 37.8 $9130 Inter KTM 250 XC Enduro 250 Two 37.8 $8700 Inter KTM 250 Freeride Trail 250 Two 35.2 $8271 Inter KTM 150 XC-W Enduro 150 Two 37.8 $7900 Inter Suzuki DR-Z70 Trail 70 Four 22 $1749 Begin Suzuki DR-Z125L Dual 125 Four 32 $3299 Begin Suzuki DR650S Dual 650 Four 34.8 $6599 Inter Suzuki DR-Z400S Dual 400 Four 36.8 $6749 Inter Suzuki RM-Z250 MX 250 Four 37.6 $7899 Inter Suzuki DR-200S Dual 200 Four 33.3 $4649 Begin Suzuki RM85 MX 85 Two 33.5 $4199 Begin Yamaha PW50 Trail 50 Two 18.7 $1499 Begin Yamaha TT-R50E Trail 50 Four 21.9 $1699 Begin Yamaha TT-R110E Trail 110 Four 26.4 $2299 Begin Yamaha TT-R125LE Trail 125 Four 31.7 $3299 Begin Yamaha XT250 Dual 250 Four 31.9 $5199 Begin Yamaha YZ65 MX 65 Two 29.5 $4599 Inter Yamaha TT-R230 Trail 230 Four 34.3 $4399 Begin Yamaha YZ85 MX 85 Two 33.1 $4599 Inter Yamaha WR250R Dual 250 Four 36.6 $6699 Begin Yamaha YZ250F MX 250 four 38 $8199 Inter Yamaha WR450F Enduro 450 Four 38 $9599 Inter Yamaha WR250F Enduro 250 Four 38 $8099 Inter Yamaha YZ250FX Enduro 250 Four 38 $7999 Inter Yamaha YZ250X Enduro 250 Two 38.2 $7499 Inter Yamaha YZ125 MX 125 Two 38.4 $6499 Inter
For riders of “average weight” the recommended dirt bikes in the sizing chart will be fine.
If you have a larger build then engine performance may be an issue.
Modern dirt bike engines are much more powerful than their earlier machinations which allow for much heavier riders on the same size engine.
Test riding a bike will be a good indicator of whether a bike is suitable.
If you are buying your first bike, a slightly under powered bike is better and safer option than a bike that has power the rider cannot safely manage.
All the main manufacturers make dirt bikes of all sizes particularly for beginners.
Ensure you get your height right for size of the bike and engine power output.
The dirt bike sizing guide covers off all the main manufacturers and the different configurations they offer.
Honda for example provide a wide range of bikes across all dirt bike categories.
They have traditionally been popular with beginners for their simplicity to ride and maintain.
A 50cc bike is an ideal size for kids aged between 3-7.
The engine can be throttled down for the very young and new riders.
As the rider improves the throttle can be adjusted to increase performance.
Getting the sizing right for your dirt bike purchase is really important.
Work out what seat height you need.
Check what bikes are available on the interactive guide.
Don’t get a bike that is overly powerful.
You won’t enjoy your riding and it might not be safe.
Go for manageable power and you will be in dirt biking heaven!
All the best.