The Yamaha U7E motorcycle specifications include a 72 cc (4.39 cu in) engine, power of 4.9 hp (3.6 kW) @ 6,500 rpm, a 3-speed gearbox, and a listed weight of 77 kg (169.8 lb).
Key specifications
Year-specific specification changes
How the Yamaha U7E 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 9th percentile across Yamaha models.
About 87% lower than the Yamaha database average. Around the 9th 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.
4.9 hp — more powerful than about 9% of Yamaha models with power data.
72 cc — larger displacement than about 9% of Yamaha models.
Mechanical overview
Additional useful specifications
| Front tire size | 225-17 |
|---|---|
| Rear tire size | 250-17 |
| Power-to-weight ratio | 0.064 hp/kg |
| Power-to-weight | 63.6 hp/tonne |
| Specific power | 68.1 hp/L |
| Bore/stroke ratio | 1.12:1 (Oversquare) |
Engine specifications
| Engine type | Single cylinder, two-stroke |
|---|---|
| Displacement | 72 cc (4.39 cu in) |
| Power | 4.9 hp (3.6 kW) @ 6,500 rpm |
| Bore × stroke | 47.0 x 42 mm (1.9 x 1.7 inches) |
| Compression ratio | 6.8:1 |
| Cooling system | Air |
Transmission and drivetrain
| Gearbox | 3-speed |
|---|
Brakes, wheels and tires
| Front brakes | Expanding brake (drum brake) |
|---|---|
| Rear brakes | Expanding brake (drum brake) |
| Front tire | 225-17 |
| Rear tire | 250-17 |
Dimensions and weight
| Dry weight | 77 kg (169.8 lb) |
|---|
Performance
| Top speed | 85.0 km/h (52.8 mph) |
|---|---|
| Power/weight ratio | 0.0636 hp/kg |
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.