17.1 kg70 km average rangeCharging time 2,5h
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Versatile. Supportive. Simple to use.
Low-step e-bike for commuting and longer tours that brings comfort and adventure to all your rides.
Woman riding on racing red Ampler Stellar e-bike
Stellar is an e-bike build to fit your life, not the other way around. Electric motor support and 9 gears take the strain out of commuting, daily errands and weekend tours. Puncture-protected tyres keep you safely on the road in all conditions.


Woman with child in child seat riding on racing red Ampler Stellar e-bike
Stellar makes everyday life more convenient by unchaining you from the traffic gridlock. It gives you extra power and the option to carry everything you need during your ride – from pannier bags to groceries and a child seat. 
Man standin with dog next to space blue Ampler Stellar e-bike
Simple to use
Stellar is light to lift and simple to use – press the power button, start pedalling and simply ride. When you ride up a hill, the bike automatically gives you extra support so you don’t have to change modes while riding. 


smart phone with Ampler App
Updates via the Ampler app
The Ampler app lets you can customise the motor assist settings, check the battery level, and receive over-the-air firmware updates. This will always keep your bike electronics up to date with the latest improved functions.

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Customise your bike

Get your Stellar


Space Blue

Racing Red


20% VAT included. Free shipping within Europe.

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  • S (48 cm) 162 – 175 cm
  • M (55 cm) 175 – 186 cm

No frame chosen

Please choose a configuration to see availability.

Bright integrated lights

LightSKIN and Busch+Müller EYC integrated lights that work for 2 hours even after depleting the battery.

Reliable disc brakes

Hydraulic disc brakes that are designed for reliable braking power in all conditions.

Puncture-protected tyres

Premium all-rounder Continental tyres that let you ride fast and safely on both road and gravel.

Technical details
Frame Sizes: Small 48 cm, Medium 55 cm
Weight: 17.1 kg
Maximum weight load: 120 kg (rider and luggage)
Frame: Aluminum Alloy 6061
Fork: Aluminium, 1 1/8", 12 mm thru axle
Crankset: Alloy 42T, 170 mm
Bottom Bracket: Sealed BB with integrated torque sensor
Drivetrain: Microshift Advent RD-M619M 9-Speed Rear Derailleur with Microshift SL-M8195 Shifter
Cassette: Microshift CS-H093 11-42T
Chain: Yaban SLA-H9 116L
Brakes: Hydraulic disc brakes with 160 mm brake discs
Tyres: Continental Top Contact II, 42-622 mm
Wheels: 28" wheels with 18 mm asymmetrical rims and sealed bearing hubs, 36H, brass nipples
Assist speed: 25 km/h
Range: 45-100 km depending on terrain and assist mode, average 70 km
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: Front: Busch+Müller IQ2 Eyc integrated light set / Rear: LightSKIN LED integrated into seat post
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 and a 5-year warranty of frame and fork.

Servicing in Europe

If there are any problems with your Ampler bike, you can get it fixed at our official service partners in Berlin, Munich, Hannover and Frankfurt.

Over-the-air updates

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

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