Raw. Untamed. Fast.

Curt is a fast-moving and bold city charger that stripped of all excess, only keeping that which is key to a fierce ride. The deep rims, carbon fork and straight handlebars give Curt an athletic look and keep the weight down to just 14.1 kg. Combined with a sporty geometry, the ride feels firm and highly responsive – just like a true racer.

Configured for speed

Available in single-speed and 10-speed configurations, you can choose the version that fits your need for versatility and looks. The optional Gates Carbon belt drive will keep the single-speed Curt’s drivetrain clean, quiet and maintenance-free.

Customised to your needs

Add mudguards and lights to your configuration to keep yourself dry on rainy days and visible in the dark. For an extra touch of performance and comfort, add on the Brooks Cambium seat and the Cambium Comfort grips. The resulting bike will look as sleek as ever while giving you the flexibility to ride in all weather conditions, everywhere.

Customise your bike

Get your Curt

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20% VAT included. Free shipping within Europe. Delivery: 5-6 weeks

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Lightweight and nimble

At 14.1 kg, Curt is more than 30% lighter than the average electric bike, making it easy to lift and carry. The lightweight componentry and smart frame design make Curt one of the most lively urban e-bikes around, ready to take on the streets straight out of the box.

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.

Smartphone app
Control the electronics

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

  • Customise the smart assist
  • See how much range you have left in your battery
  • Navigate with the built-in maps
  • Receive updates on your bike’s electronics


Sizes: Small 50 cm, Medium 54 cm, Large 58 cm
Frame: Aluminum Alloy 6061, Double butted
Fork: Carbon 1 1/8"- 1 1/2"
Crankset: Alloy 48T, 170 mm
Bottom Bracket: Sealed BB with a torque sensor
Gear shift: Single-speed 48/16. Shimano Deore M6000 10-speed upgrade (+275€)
Brakes: Shimano M500 hydraulic disc brakes
Rims: Double wall 30 mm, 36H
Tyres: Continental Contact Speed 35-622
Weight: 14.1 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 583 589 604
Seat tube length B 500 540 580
Head tube C 140 150 175
Steering angle D 72.5 72.5 72.5
Seat tube angle E 73 73 73
Chainstay F 436 436 436
Wheelbase G 1054 1060 1066
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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