13.5 - 14.3 kg70 km range
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Raw. Fast. Untamed.
Curt is a fast-moving and bold city charger that’s stripped of all excess, only keeping that which is key to a fierce ride. The stiff frame, full-carbon fork and straight handlebars give Curt an athletic look and keep the weight down to just 13.5 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 needs for versatility and looks. The single-speed configuration features a Gates Carbon belt drive that keeps Curt’s drivetrain clean, quiet and maintenance-free. The 10-gear version features the Shimano Deore M6000 shifter and derailleur which make even the steepest hills flat.
Designed for the streets
The lightweight mudguards keep you dry on rainy days and the puncture-protected Continental tyres offer you peace-of-mind when riding on busy and unpredictable streets. You’ll stay visible to others and illuminate even the darkest roads with the powerful integrated light set. The resulting bike is as sleek as ever while giving you the flexibility to ride in all weather conditions, everywhere.
Customise your bike

Get your Curt

Choose drive

Matte Black

Frame size
  • S (50 cm) 160 – 170 cm
  • M (54 cm) 170 – 185 cm
  • L (58 cm) 185 – 200 cm

Please choose a configuration to see availability.

14-day free returns

Powerful integrated lights

Curt 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

Curt 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, Curt 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 50 cm, Medium 54 cm, Large 58 cm
Frame: Aluminum Alloy 6061, Double butted
Fork: Carbon 1 1/8"- 1 1/2", 12 mm Thru-axle
Crankset: Alloy 170 mm
Bottom Bracket: Sealed BB with a torque sensor
Drivetrain: Gates CDX carbon Drive / Shimano Deore M6000 10-speed
Brakes: Shimano M6000 hydraulic disc brakes
Brake pads: Shimano G02S
Wheels: 28" wheels with 28 mm asymmetrical rims and sealed bearing hubs, 36H
Tyres: Continental Grand Prix 4-Season, 32-622 mm
Weight: 13.5 kg (Single-speed belt) / 14.3 kg (10-speed chain)
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: Front: Busch+Müller IQ2 Eyc / Rear: LightSKIN integrated seat post LED light
model geometry
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
Standover H 784 808 840

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.