17.2 kg70 km average range
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Versatile. Genuine. Unconditional.
Stellar is our modern city commuter, offering you the comfort and flexibility of a city bike, and the exciting and fast electric feel of a 21st-century e-bike. Regardless of whether your route is wet, has hills or challenges you on gravel, Stellar will feel true to its name, thanks to its versatile character.
Configured for use in all conditions
The step-through frame, wide tyres, 10 gears and full mudguards make Stellar a stand-up commuter, riding equally well in all conditions. At 17.2 kg, Stellar is lightweight and easy to lift when required.
Ampler stellar ebike on the street
Built to take you anywhere
The rear carrier creates space for your bag and personal items when cycling, whilst the high-powered integrated light set lights up the road in the dark. The puncture-protected Continental tyres ease you through even rugged roads when you decide to take on adventurous routes.
Customise your bike

Get your Stellar


Racing Red

Space Blue

Frame size
  • S (48 cm) 155 – 170 cm
  • M (55 cm) 170 – 185 cm

Please choose a configuration to see availability.

14-day free returns

Powerful integrated lights

Stellar comes with bright front and rear lights, so you will always stay visible. You also never have to worry about forgetting the lights home or about them getting stolen.

Strong disc brakes

Stellar has Shimano hydraulic disc brakes that are designed for high braking power, reliability and easy maintenance.

Puncture-protected tyres

City streets often have broken bottles and sharp stones that create punctures and flat tyres. To remove that worry, Stellar comes with lightweight Continental puncture-protected tyres.

Mobile app connectivity

You have a window into your bike via Ampler mobile app, where you can customise the motor assist settings, track your rides, navigate with built-in maps, and receive over-the-air updates.

Technical details
Frame sizes Small 48 cm, Medium 55 cm
Frame Aluminum Alloy 6061
Fork Aluminium 1 1/8", 12 mm thru axle
Crankset Alloy 42T, 170 mm
Bottom Bracket Sealed BB with a torque sensor
Drivetrain Shimano Deore RD-T6000 10-speed
Brakes Shimano Deore T6000 hydraulic disc brakes
Brake pads Shimano G02S
Wheels 28" wheels with 18 mm asymmertrical rims and sealed bearing hubs, 36H
Tyres Continental Top Contact II, 42-622 mm
Weight 17.2 kg
Assist speed 25 km/h
Range 45-100 km depending on terrain and assist mode
Battery 48 V 336 Wh LG Li-ion battery
Motor 48 V 250 W rear hub motor
Control mode Precise pedal torque sensing motor control system
Connectivity Smartphone connectivity with option to change motor settings
Charger 3A Li-ion charger with Rosenberger magnetic plug
Charging time 2.5 hours for a full charge
Lights Busch+Müller IQ2 Eyc integrated light set / StVZO approved
model geometry
Effective top tube A 587 597
Seat tube length B 480 550
Head tube C 145 153
Steering angle D 71 71
Seat tube angle E 72 72
Chainstay F 452 452
Wheelbase G 1070 1078
Standover H 700 709

Buying and riding an Ampler worry-free

Free shipping & returns

Not happy with your bike? Return it for free within 14 days and get a full refund.

2-year warranty

No need to worry if things break — Your bike comes with a 2-year warranty.

Servicing in Europe

If anything breaks during the warranty, we will pick up your bike, fix it and return it for free.

Over-the-air updates

With our over-the-air updates, the firmware inside your bike will always stay up to date.