Motocross · Trail · Electric
Your dirt bike, dialed in.
Stock specs, parts by size and free setup tools for motocross, trail and electric riders. Every number shows the maker’s page it came from and the date we checked it.
Your bike
- 150 bikes in the Garage
- 69 read from the manual
- 11 free setup tools
- 6 part types by stock size
Buying a first bike
Size it. Gear up. Ride.
For parents: seat heights with their sources, then the gear a first ride needs. The numbers are yours to weigh; we never say which bike suits a rider.
Seat heights, lowest first
Youth bikes page| Bike | Seat | Inches | Source |
|---|---|---|---|
| GasGas MC-E 2 2027 | 470–500 mm | 18.5–19.7 in | Manual p. 73 |
| Husqvarna EE 2 2027 | 470–500 mm | 18.5–19.7 in | Manual p. 77 |
| KTM SX-E 2 2027 | 470–500 mm | 18.5–19.7 in | Manual p. 73 |
| Yamaha PW50 2027 | 475 mm | 18.7 in | Manual p. 9-1 |
| Honda CRF50F 2023 | 549 mm | 21.6 in | Spec sheet (research) |
| Honda CRF50F 2024 | 549 mm | 21.6 in | Spec sheet (research) |
| Honda CRF50F 2026 | 549 mm | 21.6 in | Spec sheet (research) |
| Husqvarna EE 3 2024 | 555–600 mm | 21.9–23.6 in | Spec sheet (research) |
Your garage
Ten tools, set up for your bike
Pick your bike once and each tool opens with its stock numbers.
- Chain length calculatorLinks for new sprockets
- Gearing calculatorWhat one tooth changes
- Maintenance log
- My BikeLog each service against the manual
- Premix calculatorOil for any ratio
- Sag calculatorAgainst the manual’s targets
- Seat height finderEvery bike against an inseam
- Service scheduleWhat’s due at your hours
- Setup sheetThe manual’s clicker and jetting settings
- Tire size decoderDecode any tire size
Parts by stock size
Example: Yamaha YZ250F 2027
One bike’s stock sizes as it left the factory, each with its source. Find your own bike to see its sizes.
We earn a commission if you buy through these links. It never changes a spec or what you pay.
All six part types · Alpinestars Tech boots and Fox Racing’s own best-seller lists · Every stock size for this bike
Head to head
Side by side, sourced
Every value shows its page. Where a manual does not print it, the box says so.
| Spec | GasGas EX 300 2027 | Husqvarna FX 350 2027 |
|---|---|---|
| Sprockets | 14 / 48 p. 131 | 14 / 50 p. 153 |
| Front tire | 80/100-21 51M TT p. 132 | 80/100-21 51M TT p. 154 |
| Rear tire | 110/100-18 64M TT p. 132 | 110/100-18 64M TT p. 154 |
| Fork travel | 300 mm p. 131 | 300 mm p. 152 |
| Shock travel | 300 mm p. 131 | 300 mm p. 152 |
| Seat height | 957 mm p. 131 | 954 mm p. 153 |
| Weight | 102.5 kg p. 131 | 105.5 kg p. 153 |
| Coolant | 0.95 L p. 130 | 0.90 L p. 152 |
From each maker’s manual, checked 16 Oct 2026. Full comparison with every source · All 729 comparisons
Recently verified
Fresh off the manual
Riding an electric bike?
E-moto law in 50 states, every answer cited to the statute with the date we read it.
How we’re funded
Research first
From the manual
Only a value printed on the maker’s own page counts as verified. Page and date on every one.
Blanks never guessed
If no maker document prints it, the box says so. No averages, no borrowing from a similar bike.
No display ads
Labelled retailer links and sponsors pay the bills, and never touch the data. How we verify · Affiliate disclosure