Two numbers decide how a bike accelerates: the power of the engine and the mass it has to move. Manufacturers publish both (retrieved 23 September 2026), and dividing one by the other cuts through all marketing. This is the honest way to compare Vietnamese underbones.
The verified ratios
| Model | Max power | Kerb weight | kW per 100 kg |
|---|---|---|---|
| Yamaha Exciter 155 VVA | 13.2 kW | 123 kg wet | ~10.7 |
| Honda Winner R | 11.5 kW | 124 kg | ~9.3 |
| Honda CBR150R | 12.6 kW | 139 kg | ~9.1 |
| Honda Wave RSX | 6.46 kW | 98 kg | ~6.6 |
| Honda Future 125 FI | 6.83 kW | 104 kg | ~6.6 |
| Honda Super Cub C125 | 6.87 kW | 109 kg | ~6.3 |
| Honda Wave Alpha 110 | 6.12 kW | 96 kg | ~6.4 |
| Honda Blade | 6.18 kW | 98-99 kg | ~6.2 |
| Honda CT125 | 6.76 kW | 117 kg | ~5.8 |
| Yamaha Sirius RC 110 | 5.9 kW | 100 kg wet | ~5.9 |
(Power per 100 kg, rounded; wet and kerb weights are as the manufacturers publish them - see our wet vs dry weight explainer for the difference. )
What the ratios reveal
First: the three manual sport bikes form their own class - a CBR150R with 12.6 kW is dragged down by its own 139 kg, and the lighter Winner R is effectively its equal despite less power. The Exciter’s four-valve VVA head plus lowest weight wins outright.
Second: the entire semi-automatic class sits between roughly 5.8 and 6.7 kW per 100 kg. Within that class, a 96 kg Wave Alpha feels nearly as lively as a 109 kg Super Cub with more power - the weight does it. This is why we tell short-distance riders to buy light, not powerful.
What ratios miss
Gearing, clutch type and where torque peaks decide how the power reaches the road - a rotary four-speed and a six-speed manual use power very differently. And a passenger or full luggage adds real kilograms that the ratio does not include.
Feeling the difference
Our price-published daily classes are the Honda Wave and Yamaha Sirius at 150,000 VND per day - contact us to confirm current availability. Sport models: contact us. Insurance is not included in rentals.