ATVYouth
2025 Kawasaki KFX90
89cc Single-cylinder, air-cooled
$3,199
View full specsKawasaki KFX90 vs Yamaha YFZ50
2025 Kawasaki KFX90 vs 2025 Yamaha YFZ50: 6 vs 3 hp (unverified estimates), 89 cc vs 49 cc, 278 lb dry vs 220 lb wet, $3,199 vs $2,349. Full side-by-side specs: powertrain, drivetrain, dimensions, towing and price.
ATVYouth
2025 Yamaha YFZ50
49cc Single-cylinder (SOHC, 4-stroke), air-cooled
$2,349
View full specsAt a glance
More power6 hpvs3 hp est.Unverified estimates
Lower price$3,199vs$2,349YFZ50 wins
Weight278 lb dryvs220 lb wetDifferent weight bases
Bigger engine89 ccvs49 ccKFX90 wins
Ground clearance4.5 invs3.5 inKFX90 wins
Towingn/avsn/aTie
Across measured specs the KFX90 leads in 2 categories and the YFZ50 in 1. Comparing two youth ATVs, the KFX90 uses a 89 cc single-cylinder with about 6 hp, while the YFZ50 uses a 49 cc single-cylinder (sohc, 4-stroke) with about 3 hp. At least one horsepower figure is an unverified estimate, so this comparison does not declare a power winner. At $2,349 the YFZ50 is the more affordable of the two.
Full specifications
KFX90 Kawasaki · 2025 View | YFZ50 Yamaha · 2025 View | |
|---|---|---|
| Engine | ||
| Displacement | 89 cc | 49 cc |
| Engine configuration | Single-cylinder | Single-cylinder (SOHC, 4-stroke) |
| Cylinders | 1 | 1 |
| Cooling | Air | Air |
| Power (approx.) | 6 hp | 3 hp |
| Fuel system | EFI | Carburetor |
| Starter | Electric | Electric |
| Drivetrain | ||
| Transmission | Automatic CVT | Automatic CVT with chain final drive |
| Drive system | 2WD | 2WD |
| Dimensions & capacity | ||
| Seating | 1 rider | 1 rider |
| Weight (different bases) | 278 lb (126 kg) | 220 lb (100 kg) |
| Overall width | 41.5 in (105.4 cm) | 32.3 in (82 cm) |
| Wheelbase | 41.3 in (104.9 cm) | 32.7 in (83.1 cm) |
| Ground clearance | 4.5 in (11.4 cm) | 3.5 in (8.9 cm) |
| Fuel capacity | 1.5 gal (5.7 L) | 1.5 gal (5.7 L) |
| Towing capacity | n/a | n/a |
| Pricing | ||
| MSRP (base) | $3,199 | $2,349 |
| Model year | 2025 | 2025 |
Highlighted figures indicate the stronger spec in each row. Power is approximate crank output; confirm exact numbers with the manufacturer.