ADO Air 20S Folding Electric Bike
The first 20-inch folding e-bike with a carbon belt drive, torque sensor, and hydraulic suspension

Who is this folding electric bike best suited for?
The ADO Air 20S folding electric bike is the ideal choice for daily city commuters, students, and travelers looking for an extremely lightweight, clean, and reliable mode of transport. Thanks to its compact folding frame and low weight of just 18 kg, the bike is incredibly easy to carry up stairs, store in the office, or transport in a car trunk and on public transit. It is tailored for riders from 150 cm to 200 cm tall, ensuring wide usability for the whole family.

Carbon Belt-Drive – Rust-free and maintenance-free
Forget about dirty, greasy chains and constant maintenance. The ADO Air 20S is equipped with an advanced Carbon Belt drive, which ensures quiet, smooth, and clean operation. The belt is rust-resistant and lasts between 20,000 and 30,000 km of operation without the need for lubrication or servicing. Your clothes will remain completely clean during your commute, and the power transfer to the wheel is direct and highly efficient.

Smart Torque Sensor and brushless motor
The heart of the drive system is an advanced smart torque sensor that precisely detects your pedaling force and adjusts the motor assistance in a millisecond. This provides a completely natural riding feel without sudden starts. Even when riding uphill or starting from a standstill, you will instantly receive optimal support from the brushless hub motor, which in the road-legal version develops 250 W of power and up to 37 Nm of torque (the international version reaches a maximum power of 350 W and up to 42 Nm of torque).

Portable and powerful battery with up to 100 km range
The bike uses a high-quality portable battery with a capacity of 36V 9.6 Ah, which is elegantly hidden in the seatpost. The battery can be easily removed and charged anywhere – at home or in the office. With a full charge taking between 4 and 6 hours, you can ride up to 100 km under optimal conditions. The battery also complies with the strict UN 38.3 testing standards for lithium-ion batteries.

Front hydraulic suspension for premium comfort
Compared to standard rigid folding bikes, the ADO Air 20S boasts a front hydraulic fork (Hydraulic Shock Absorber Fork). The suspension effectively absorbs vibrations and shocks when riding over speed bumps, gravel, or cobblestones, significantly reducing hand and back fatigue while ensuring an exceptionally stable and comfortable city ride.

Powerful hydraulic disc brakes
For safe and quick stopping in all weather conditions, the bike features premium hydraulic disc brakes. They provide consistent braking force with minimal effort on the brake lever, giving you complete control over the bike on dry, wet, and slippery city surfaces.

IPS color display and ADO smart app with navigation
The built-in 2.4-inch IPS color display features high brightness, ensuring excellent readability of speed, range, and assist level data even under direct sunlight. The display has a high water resistance rating of IPX7. Via Bluetooth, you can connect to the ADO Smart APP, which allows you to track ride statistics and send navigation instructions directly to the bike's screen.

Ultra-lightweight aluminum frame and easy folding
The bike frame is made of lightweight and structurally optimized aluminum. The net weight of the bike is just 18 kg (excluding accessories), making it easy to lift with one hand. The bike folds in just a few seconds to compact dimensions of 86 x 52 x 68 cm, allowing you to store it in the tightest corners of your home or office. Despite its lightweight design, the bike has a high load capacity of up to 120 kg.

20-inch puncture-resistant tires and safe lighting
The bike is equipped with robust 20-inch tires with a width of 1.95 inches, which are puncture-resistant and offer excellent grip on city streets and paved gravel paths. For great visibility at night or in poor weather, a bright front headlight with a light output of 1200 lumens and **E-Mark** certification is provided, water-resistant to the IPX5 standard, while a reflector is mounted at the rear for extra safety.
What do you receive with your purchase?
- ADO Air 20S folding electric bike
- 36V 9.6 Ah removable battery
- 42V 2A battery charger
- A pair of mudguards (for front and rear wheel)
- Assembly and mounting tools
- User manual
- Warranty: 2-year warranty on the bike frame and 12 months on the controller, motor, battery, fork, steering tube, handlebar, charger, pedals, sprocket, and rear swingarm.
- Service and technical support are provided at Tržaška cesta 222, 1000 Ljubljana.
Technical Specifications
| Model | ADO Air 20S (Folding electric bike) |
| Rated motor power | CE version: 250 W / International version: 250 W |
| Maximum motor power (Peak Power) | CE version: 250 W / International version: 350 W (use of the international version is restricted to private areas) |
| Battery | Portable, 36V / 9.6 Ah (hidden in the seatpost) |
| Torque | CE version: 37 Nm / International version: 42 Nm |
| Charging time | 4-6 hours |
| Charger | 42V 2A |
| Maximum range | Up to 100 km |
| Speed | Up to 25 km/h (electronically limited for road use) |
| Display | 2.4-inch IPS color display (IPX7 waterproof) |
| Suspension | Front hydraulic suspension (Hydraulic Shock Absorber Fork) |
| Transmission / Drivetrain | Single speed, carbon belt (Carbon Belt) |
| Braking system | Hydraulic disc brakes |
| Tires | 20 x 1.95 inches (puncture-resistant) |
| Pedal assist | Smart torque sensor (Torque sensor) |
| Assist levels | 3 levels of electric assist (0-3 levels of pedaling) |
| Frame | Ultra-lightweight aluminum frame |
| Front light | IPX5 waterproof, 1200 lumens, E-Mark IPX5 headlight |
| Rear light | Reflector |
| Pedals | Folding pedals |
| Suitable rider height | 150 cm - 200 cm |
| Operating temperature | -10°C to 50°C |
| Net weight | 18 kg (includes battery, without accessories; tolerance +/- 3%-5%) |
| Gross weight | 24 kg (includes battery and all accessories; tolerance +/- 3%-5%) |
| Maximum load capacity | 120 kg |
| Folded dimensions | 860 mm (length) x 520 mm (width) x 680 mm (height) |
| Certifications | SGS CE, SGS UKCA, EN15194, UN 38.3, Machinery Directive (2006/42/EC), EMC Directive (2014/30/EU), Radio Equipment Directive (2014/53/EU), DIN EN 15194:2017 |
| Bike geometry dimensions (mm) | |
| A - Seat Tube Length | 370 mm |
| B - Head Tube Length | 330 mm |
| C - Top Tube Length | 630 mm |
| D - Fork Length | 310 mm |
| E - Reach | 420 mm |
| F - Max Seat Height | 960 mm |
| G - Min Seat Height | 740 mm |
| H - Total Length | 1560 mm |
| I - Max Handlebar Height | 1150 mm |
| J - Min Handlebar Height | 1020 mm |
| K - Standover Height | 600 mm |
| L - Wheel Diameter | 510 mm |
| M - Wheelbase | 1060 mm |
| N - Chainstay Length | 410 mm |
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