Specification sheet — Yamaha
Yamaha Aerox 155 specifications
Yamaha's sporty 155 cc scooter, on 14-inch wheels and with a 5.5 L tank.
- Displacement
- 155 cc
- Peak power
- 11.3 kW / 8,000 rpm
- Peak torque
- 13.9 N·m / 6,500 rpm
- Curb weight
- 125 kg (ABS Version), 122 kg (Standard Version)
- Seat height
- 790 mm
- Fuel tank
- 5.5 L
Overview
The published sheet lists a 155 cc engine, peak power of 11.3 kW / 8,000 rpm, peak torque of 13.9 N·m / 6,500 rpm. It carries a curb weight of 125 kg (ABS Version), 122 kg (Standard Version), a 790 mm seat height and a 5.5 L tank.
On the published figures it works out to 9 kW per 100 kg, level with the median for the other 5 scooters in this database (8.7 kW per 100 kg).
Market and trim notes
This sheet covers the Yamaha Aerox 155 as listed in the Indonesian distributor’s current catalogue. Market-specific equipment can differ from the same nameplate in another country, so the figures are not interchangeable.
Full specification
Every row below is a published figure. Rows the manufacturer does not publish are marked rather than estimated.
Engine and performance
| Engine type | Liquid cooled 4-stroke, SOHC |
|---|---|
| Displacement | 155 cc |
| Bore × stroke | 58.0 mm x 58.7 mm |
| Compression ratio | 11.6 : 1 |
| Cooling | Liquid derived |
| Fuel system | FI (Fuel Injection) |
| Maximum power | 11.3 kW / 8,000 rpm |
| Maximum torque | 13.9 N·m / 6,500 rpm |
| Starting | Electric Starter |
| Ignition | TCI |
| Lubrication | Basah |
| Oil capacity | Total – 1.00 L ; Berkala 0.90 L |
Transmission and final drive
| Transmission | V-belt Automatic |
|---|---|
| Clutch | Kering, Centrifugal Automatic |
| Final drive | V-belt derived |
Chassis, suspension and brakes
| Frame | Underbone |
|---|---|
| Front suspension | Teleskopik |
| Rear suspension | Unit Swing |
| Front brake | Disc |
| Rear brake | Drum |
| Front tyre | 110/80-14M/C 53P |
| Rear tyre | 140/70-14M/C 62P |
Dimensions, weight and capacity
| Length × width × height | 1980 x 700 x 1150 mm |
|---|---|
| Wheelbase | 1350 mm |
| Ground clearance | 143 mm |
| Seat height | 790 mm |
| Curb weight | 125 kg (ABS Version), 122 kg (Standard Version) |
| Fuel tank | 5.5 L |
What the numbers mean
The 790 mm seat is a middle-of-the-road height: most riders will get the balls of both feet down.
At 125 kg (ABS Version), 122 kg (Standard Version) it is manageable at walking pace but heavy enough to notice on a slope.
The 5.5 L tank is typical for the class and enough for a week of commuting between fills. The manufacturer does not publish a consumption figure, so this page does not quote a range.
Tyres are 110/80-14M/C 53P front and 140/70-14M/C 62P rear. Check that your local shop stocks both before a long trip. Small rims are less widely stocked, so confirm availability locally.
Closest alternatives
| Model | Capacity | Power | Torque | Weight | Seat |
|---|---|---|---|---|---|
| Yamaha NMAX 155 | 155.1 cc | 11.3 kW / 8,000 rpm | 13.9 N·m / 6,500 rpm | 130 kg (Standard & Connected Version), 132 kg (Connected/ABS Version) | 765 mm |
| Yamaha NMAX Turbo | 155.1 cc | 11.3 kW / 8,000 rpm | 14.2 N·m / 6,500 rpm | 135 kg | 770 mm |
| Yamaha Aerox Alpha | 155.1 cc | 11.3 kW (15.4 PS) / 8,000 rpm | 14.2 N·m / 6,500 rpm | 130 kg (TURBO & TURBO Ultimate), 127 kg (CyberCity), 124 kg (Standard) | 790 mm |
Nearest alternatives by category and capacity in this database. These are published figures, not a road test or a recommendation.
Ownership and maintenance notes
- The V-belt and rollers are the parts that change the feel of a CVT scooter. Inspect them at the interval in the owner's manual, and sooner if acceleration flattens or the engine revs without matching speed.
- Engine oil and the air filter do most of the work in keeping a small scooter consistent. Check the oil level cold, on level ground, and use the grade listed for the model.
- Liquid cooling adds a coolant level and condition check. Do it when the engine is cold, and never open the radiator cap on a hot engine.
Source and verification
Figures are taken from Yamaha Motor Indonesia, the Indonesian distributor, on 13 November 2026.
Source page: yamaha-motor.co.id/product/all-new-aerox155-connected/.
Cooling, final drive is inferred from the published layout rather than printed as a separate field.
Wording is quoted as published; spacing and unit symbols are normalised. Specification databases go stale: if a figure here differs from the current distributor page, the distributor page wins, and this sheet records what was published on the verification date.
