Power and torque headline every review, but the two numbers describe different experiences - and the rpm they arrive at matters as much as the figures. All values below are manufacturer-published (retrieved 23 September 2026).
The two numbers
Torque (Nm) is the twisting force - how hard the engine pushes per combustion cycle. Power (kW) is torque multiplied by rpm - how fast that push can be delivered. The commuter class: Wave Alpha 6.12 kW/8.44 Nm; Blade 6.18/8.65; Wave RSX 6.46/8.70; Sirius 5.9/9.0; Future 125 6.83/10.2; Super Cub 6.87/10.15; CT125 6.76/10.9. The sport class: Winner R 11.5 kW/13.5 Nm; Exciter 155 13.2/14.4; CBR150R 12.6/14.4.
Why rpm is the hidden third number
The CT125 makes its 10.9 Nm at 4,750 rpm - low-rev tractor pull for bad roads. The Exciter makes 14.4 Nm at 8,000 rpm and 13.2 kW at 9,500 - you must rev it to reach the promise. Same class of figure, opposite characters. When you read any spec, always read the “@ rpm” alongside it.
What this means for choosing
City riding rewards low-rpm torque: the CT, Future and Cub figures arrive early and make stop-light launches easy. Touring rewards peak power: the sport trio’s 11.5-13.2 kW shows up on overtaking. And the commuter class’s 6-7 kW is not a defect - in Hanoi flow, traffic sets the pace, and our commuting guide explains why the cheap bikes win it.
Rental advice
The price-published Wave and Sirius classes (150,000 VND/day) deliver exactly the low-rpm character that suits new visitors; contact us to confirm current availability of any model.