ampler stellar red ebike with a rear carrier
Versatile. Genuine. Unconditional.

Stellar is our modern city commuter, offering you the comfort and flexibility of a citybike, and the exciting and fast electric feel of a 21st century e-bike. Regardless of whether your route is sometimes wet, has hills to tackle 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, 9 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.

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

ampler stellar red ebike with a rear carrier sideview

Racing Red

Graphite Grey

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

20% VAT included. Free shipping within Europe. Delivery: 3-4 weeks

No frame chosen

Equipped and always prepared

The wide tyres, full mudguards and comfortable riding position make Stout prepared for every occasion. You’ll always feel confident to take on any weather and road condition your commute puts you up against.

Electric assist
Smooth, intuitive and safe

The bike’s torque sensor constantly measures how hard you pedal and calculates the level of assist for the electric motor. The motor provides more assist the harder you pedal, and less assist the lighter you pedal. This puts you always in control of the bike and keeps your ride safe.

Battery and range
70 km on one charge

The average battery assisted range is 70 km, giving you peace of mind on all your rides. And even if you run out of juice, you simply keep on cycling. One hour of charging will give you 33 km of range, and it takes just 2.5 hours for a full charge.

ampler smartphone app navigation screen
Smartphone app
Control the electronics

You can ride the bike perfectly even without a smartphone. However, the app lets you:

  • Configure the electric assist (Speed, Power, Assist %)
  • See how much range you have left in your battery
  • Receive updates on your bike’s electronics
  • Navigate with the built-in maps


Sizes: Small 48 cm, Medium 55 cm
Frame: Aluminum Alloy 6061
Fork: Aluminum 1 1/8"
Crankset: Alloy 42T, 170 mm
Bottom Bracket: Sealed BB with a torque sensor
Gear shift: Shimano Acera RD-T3000 9-speed
Brakes: Shimano M315 hydraulic disc brakes
Rims: Double wall 18 mm, 36H
Tyres: Continental Top Contact II, 47-622 mm
Wheels: 28"
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


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
Frequently asked questions
Where is the battery?

The battery is integrated into the down-tube of the frame. The frame and the battery are designed in such a way that every professional bike shop could remove the battery, and if needed, replace it with a new one in under one hour.

How to charge the battery?

The battery is charged with the charger, which comes with the bike. The process is similar to charging your laptop – you have to connect the bike with a standard wall power outlet.

Why do I need the mobile app?

You can use our mobile app to:

  • Navigate and track your rides
  • See your riding history
  • Adjust the motor settings
  • See your battery level
  • Use the app as a display

You can get the free Ampler Bikes app from Play Store (Android) and App Store (iOS). You can also change all the standard functions from the Power Button on your bike.

Which frame size should I get?

You can find your perfect frame size based on your height:
160 - 170 cm = Small frame
170 - 185 cm = Medium frame
185 - 200 cm (and above) = Large frame

The geometry of the bike is made according to the most ergonomic and optimal seating position.
If your height is right in the middle of two frame sizes (e.g. 185 cm) we recommend you taking the smaller frame.

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