The Yamaha YFM50 motorcycle specifications include a 49 cc (2.99 cu in) engine, an automatic gearbox, and a listed weight of 108 kg (238.1 lb).
Key specifications
How the Yamaha YFM50 compares
This compares the motorcycle with all Yamaha models in this specifications database. The blue marker is this model and the grey line is the Yamaha database average.
About 91% lower than the Yamaha database average. Around the 5th percentile across Yamaha models.
About 22% lower than the Yamaha database average. Around the 2nd percentile across Yamaha models.
About 48% smaller than the Yamaha database average. Around the 17th percentile across Yamaha models.
Yamaha database percentile rankings
Percentiles show where this motorcycle sits across the Yamaha specifications database. They are descriptive database rankings, not performance ratings.
49 cc — larger displacement than about 5% of Yamaha models.
618 mm — taller than about 2% of Yamaha models.
6.8 L — larger than about 17% of Yamaha fuel tanks in this database.
Dimensions compared with Yamaha average
Each measurement is compared with the average value across Yamaha models where that dimension is available.
1,537
2,082
26% below average.
825
823
Close to average.
915
1,172
22% below average.
1,030
1,416
27% below average.
618
793
22% below average.
Mechanical overview
Additional useful specifications
| Front tire size | 16/7-10 |
|---|---|
| Rear tire size | 16/10-9 |
| Bore/stroke ratio | 0.94:1 (Undersquare) |
Model information
| Year released | 2009 |
|---|
Engine specifications
| Engine type | Single cylinder, four-stroke |
|---|---|
| Displacement | 49 cc (2.99 cu in) |
| Bore × stroke | 39.0 x 41.4 mm (1.5 x 1.6 inches) |
| Compression ratio | 10.3:1 |
| Cooling system | Air |
| Fuel system | Carburettor. Mikuni VM 16 SH |
| Fuel control | Single Overhead Cams (SOHC) |
| Ignition | DC-CDI |
| Starter | Electric |
| Lubrication | Wet sump |
Transmission and drivetrain
| Gearbox | Automatic |
|---|---|
| Final drive | Shaft drive (cardan) (final drive) |
Brakes, wheels and tires
| Front brakes | Expanding brake (drum brake) |
|---|---|
| Rear brakes | Expanding brake (drum brake) |
| Front tire | 16/7-10 |
| Rear tire | 16/10-9 |
Dimensions and weight
| Dry weight | 108 kg (238.1 lb) |
|---|---|
| Seat height | 618 mm (24.3 inches) |
| Overall length | 1,537 mm (60.5 inches) |
| Overall width | 825 mm (32.5 inches) |
| Overall height | 915 mm (36.0 inches) |
| Wheelbase | 1,030 mm (40.6 inches) |
Fuel and emissions
| Fuel capacity | 6.80 L (1.80 US gal) |
|---|
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Yamaha models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Yamaha information before relying on them. Visit the official Yamaha website.