Ampler Curt electric bike review: Single speed elegance at its finest


The Ampler Curt single speed electric bike is one of the most highly refined electric bikes we’ve seen to date, with an incredibly streamlined design that looks beautiful and performs even better and a curb weight that’s laughably light.

Ampler is known for for their elegant designs, and the Curt does not disappoint. This single speed electric bike is super clean and simple, and looks virtually indistinguishable from an analogue bike save the small, efficient motor in the rear wheel. It comes stock with an integrated battery that’s hidden in the downtube and hydraulic disc brakes, but also offers myriad upgrade points like a Brooks saddle and grips, integrated lighting and puncture resistant tires. 

Power — 250 nominal watts, 350 peak watts

The Ampler Curt single speed electric bike has an efficient Aikema gearless hub motor that puts out a modest 250 watts of nominal power and 350 peak watts of power. This motor is quite efficient and requires minimal power to operate, helping to extend the range compared to a more powerful motor. Even though it’s only 250 watts of nominal power, the Ampler Curt single speed electric bike still feels pretty zippy thanks in part to its light curb weight. And because this motor is gearless it allows for regenerative braking, which helps extend the life of the brake pads and also feeds energy back into the battery.

Speed  — 15 mph

The Ampler Curt single speed electric bike has a top speed of 15 mph, which can be reached using the pedal assist, making this a class 1 electric bike. Class 1 electric bikes can be legally ridden in almost any area, which makes this a good choice for those who live in a city with strict electric bike laws. 

Battery and Range — 48 volt 7 ah, 50 miles

The Ampler Curt single speed electric bike runs on a 48 volt system and has a 7 ah battery for an estimated max range of 50 miles with pedal assist. The battery is located in the downtube which helps keep the bike well balanced, but means it can’t be removed for charging. 

Pedal assist sensor — Torque sensor

The Ampler Curt single speed electric bike is equipped with a torque sensor that measures the rotation of the cranks. Like most cadence sensors, there is some delay from the time the rider starts and stops pedaling to the time the motor activates and deactivates.

Display — App

The Ampler Curt single speed electric bike has no display and instead opts for a proprietary app that can be accessed via a smartphone. The lack of display means there is no native feedback on the Curt, but it also means it keeps the handlebars completely clean and adds to that streamlined, under-the-radar look. The app itself provides all the necessary electrical feedback including, speed, battery level and distance. 

Frame and weight — 6061 Aluminum alloy, 29 pounds

The Ampler Curt single speed electric bike has three different frame sizes and is made from 6061 aluminum alloy with a curb weight of nearly 29 pounds, making this the lightest full frame electric bike we’ve tested to date. The multiple frame sizes also helps accommodate a wider range of riders, ensuring the frame fits you well.

Suspension —  Solid forks

The Ampler Curt single speed electric bike has solid forks and no suspension, but an aftermarket seat post suspension can be easily added for those riders who want a little more shock absorption.

Gearing — Single speed

The Ampler Curt single speed electric bike uses a belt driven single speed, but there is the option to purchase a 10-speed version as well for those who want more flexibility when climbing hills. 

Brakes — Shimano, hydraulic disc

The Ampler Curt single speed electric bike has Shimano hydraulic disc brakes with 160 mm rotors, giving this bike plenty of stopping power. The brake levers also have motor inhibitors built in, which instantly cut power to the motor whenever the brake levers are depressed.

Warranty — 2 year comprehensive

The Ampler Curt single speed electric bike has a 2 year comprehensive warranty that covers everything.

Price — Starting at $3,218 

Starting at $3,218 the Ampler Curt single speed electric bike is definitely on the expensive side and is considered a high-end electric bike. The price can quickly climb to nearly $4,000 with the optional accessories, including the belt drive (it comes standard with a chain drive) for $316, integrated lighting for $172, puncture resistant tires for $80, Brooks saddle and grips for $143, 10-speed derailleur for $316, bike lock for $92 and rear rack for $57. Most of the price for the Curt is wrapped up in the overall package, and this ride trades power and range for elegance and simplicity with some serious high-end components. 

Who’s it for — City dwellers with an eye for style and a big wallet 

This feels like a good choice for those who feel style and elegance are a must, and aren’t afraid to spend for it. The Ampler Curt electric bike is well suited for commutes through the city and its incredibly light curb weight makes it ideal for areas where the bike must be picked up and carried, like up stairs or when getting in a subway. The multiple upgrade options also means this bike can be customized to your liking, and the various frame sizes ensure you’ll get one that fits you perfectly. If lightweight single speeds that look amazing and perform even better are your thing, the Ampler Curt is a strong contender.


Check out the Ampler Curt electric bike bike: