# Yamaha Aerox 155 — Full Specifications 2026

> Complete technical specifications for the Yamaha Aerox 155.

Source: https://indianautoforum.com/bikes/yamaha/aerox-155/specifications

The Yamaha Aerox 155 is powered by a 155cc liquid-cooled, 4-stroke, SOHC engine with Yamaha's VVA (Variable Valve Actuation) technology. That might sound like brochure-speak, but VVA genuinely changes how the engine performs - it switches between low and high cam profiles depending on engine speed, delivering strong low-end pull for city filtering and a punchy top-end surge when you crack the throttle on a highway stretch. The result is 14.75 bhp at 8,000 rpm and 13.9 Nm of torque at 6,500 rpm - the most powerful CVT scooter you can buy under Rs 1.5 lakh in India.

The CVT gearbox is impressively smooth. There's none of the rubber-band hesitation that plagues cheaper automatics - twist the throttle at any speed from 20 to 100 km/h and the Aerox responds immediately. The Smart Motor Generator (SMG) system doubles as both a starter motor and a generator, contributing to smooth stop-start behaviour in city traffic.

At 126 kg kerb weight with a 790mm seat height, the Aerox is accessible to most Indian riders. The 14-inch alloy wheels run 110/80-14 front and 140/70-14 rear tubeless rubber - a wider contact patch than most scooters, which contributes to the planted cornering feel. The 1,350mm wheelbase and 145mm ground clearance strike a useful balance between stability and urban manoeuvrability.

Braking comes from a 230mm front disc with single-channel ABS and a 130mm rear drum. The front disc setup is competent for the performance level, though seasoned riders will wish for a rear disc. The Version S adds a Traction Control System (TCS) that modulates wheelspin during aggressive acceleration on slippery surfaces - a useful safety net, especially on rain-wet roads.

The 24.5L underseat boot is genuinely class-leading - it swallows an XL full-face helmet, a laptop bag, and a jacket without protest. External fuel filling means you never have to lift the seat to refuel. The 5.5-litre tank, combined with the 40 kmpl ARAI mileage claim, gives a theoretical range of around 220 km between stops.

## Brakes & Wheels
| Spec | Value |
|------|-------|
| Braking System | Single Channel ABS |
| Front Brake | Disc, 230 mm, 1 piston caliper |
| Rear Brake | Drum, 130 mm |
| Tyre Pressure (Rider & Pillion) | Front - 29 psi, Rear - 33 psi |
| Tyre Pressure (Rider Only) | Front - 29 psi, Rear - 33 psi |
| Tyre Size | Front - 110/80 - 14, Rear - 140/70 - 14 |
| Tyre Type | Tubeless |
| Wheel Size | Front - 14 inch, Rear - 14 inch |
| Wheel Type | Alloy |

## Dimensions
| Spec | Value |
|------|-------|
| Fuel Tank Capacity | 5.5 litres |
| Ground Clearance | 145 mm |
| Kerb Weight | 126 kg |
| Overall Dimensions (LxWxH) | 1980 mm x 700 mm x 1150 mm |
| Reserve Fuel Capacity | 1.3 litres |
| Seat Height | 790 mm |
| Wheelbase | 1350 mm |

## Power & Performance
| Spec | Value |
|------|-------|
| Battery | 12V,6.0 Ah |
| Bore x Stroke | 58 mm x 58.7 mm |
| Compression Ratio | 11.6:1 |
| Displacement | 155 cc |
| Emission Standard | BS6 Phase 2B |
| Engine Type | 1 Cylinder, Liquid Cooled, 4 Valves |
| Fuel Type | Petrol |
| Max Power | 14.75 bhp @ 8000 rpm |
| Max Torque | 13.9 Nm @ 6500 rpm |
| Mileage - ARAI | 40 kmpl |
| Mileage - Owner Reported | 40 kmpl |
| Riding Modes | No |
| Riding Range | 220 km |
| Spark Plugs | 1 Per Cylinder |
| Top Speed | 115 kmph |
| Transmission | Automatic |
| Transmission Type | CVT |

## Suspensions & Chassis
| Spec | Value |
|------|-------|
| Chassis Type | Underbone |
| Front Suspension | Telescopic fork |
| Front Suspension Preload Adjuster | No |
| Rear Suspension | Unit swing |
| Rear Suspension Preload Adjuster | No |

## Warranty and Services
| Spec | Value |
|------|-------|
| 1st Service | 1000 km or 30 days |
| 2nd Service | 4000 km or 150 days |
| 3rd Service | 7000 km or 270 days |
| 4th Service | 10000 km or 390 days |
| No. of Free Services | 4 |
| Vehicle Warranty | 30,000 km or 2 years |

How does the Aerox 155 spec sheet compare against its rivals? The TVS NTorq 150 uses a similar displacement engine but it is air-cooled, which limits sustained performance once temperatures climb in stop-and-go traffic. The Hero Xoom 160 uses a slightly larger 160cc motor - also air-cooled. The Aerox's liquid cooling is a genuine engineering advantage: the engine runs cooler, performance stays consistent over long distances, and refinement at highway speeds is noticeably superior. If raw specifications are your buying criterion, the Aerox 155 wins this segment outright. The only area where the spec sheet lets it down is the rear suspension setup - firm by any Indian road standard - and the absence of a rear disc on the base variant.

## FAQs

**What is the engine displacement and type of the Yamaha Aerox 155?**
The Yamaha Aerox 155 uses a 155cc, liquid-cooled, 4-stroke, SOHC single-cylinder engine with VVA (Variable Valve Actuation) technology. It produces 14.75 bhp at 8,000 rpm and 13.9 Nm of torque at 6,500 rpm - the most powerful CVT scooter under Rs 1.5 lakh in India.

**What is the kerb weight and seat height of the Yamaha Aerox 155?**
The Yamaha Aerox 155 weighs 126 kg at kerb and has a seat height of 790mm. The 14-inch alloy wheels, 1,350mm wheelbase, and 145mm ground clearance keep it manageable in city traffic despite the sporty maxi-scooter dimensions.

**What suspension does the Yamaha Aerox 155 use?**
The Aerox 155 uses telescopic front forks and a unit swing arm rear suspension tuned for handling and highway stability rather than comfort. The firm rear suspension tune is the most repeated owner complaint, particularly on potholed urban roads. No suspension adjustment is possible from stock.

**What is the braking setup on the Yamaha Aerox 155?**
The Yamaha Aerox 155 uses a 230mm front disc brake with single-channel ABS and a 130mm rear drum brake. The front disc handles emergency stops competently; the rear drum is adequate for normal riding but the absence of a rear disc is felt during hard braking at speed above 80 km/h.

**How much underseat storage does the Yamaha Aerox 155 have?**
The Yamaha Aerox 155 offers 24.5 litres of underseat storage - the largest in its scooter segment in India. It fits an XL full-face helmet with room for a laptop bag simultaneously. External fuel filling means you never need to open the seat at a petrol pump.

## More
- [Overview](/bikes/yamaha/aerox-155)
- [Variants & Prices](/bikes/yamaha/aerox-155/variants)
- [Price in India](/bikes/yamaha/aerox-155/price)