Comfort 25/45

More comfort is not possible.

Comfort 25/45 – The most affordable 45km/h e-bike – with low top tube

You appreciate a comfortable climb on the e-bike? Then the Comfort 25/45 model with the low top tube is just right for you. Otherwise, it is identical to the Classic 25/45. If you need to pull a trailer or start uphill, the Classic and Comfort models are best. Due to its characteristics, the mid-motor reacts faster and with more torque when starting. For a commute of less than 20km, the Classic and Comfort models are wonderfully sufficient; above that, the Power45 is basically more suitable.

The components

/ The electric motor

500 watts of peak power support you during acceleration or when starting uphill. The engine is equipped with a torque sensor that measures the rider’s force and adjusts the engine power accordingly. This gives the feeling of riding a normal bike with a lot of tailwind. Also, the engine is equipped with an idle, so you can drive without a battery without much resistance from the engine.


Aureus Mid-Drive


Torque sensor which measures the driver performance

Speed sensor

Spoke magnet sensor


500 watt



Sliding aid

Yes up to 6 km/h




Yes with gear ratio 33.6:1


25 km/h or 45km/h depending on software package



Power-assist ratio


/ Disc brakes

Reliable, high-quality hydraulic disc brakes of the Tektro brand have established themselves on the e-bike. They enable safe braking at high speeds. Large diameters of 180 mm rear and front provide maximum safety even in the rain.

Brake technology


Brake lever length


Number of brake pistons

2 Pistons

Brake caliper

Tektro HD-M285 disc brake caliper front / rear Post Mount

Disc diameter

180 mm

/ The circuit

The AureusDrive relies on a proven and robust 10-speed Shimano Deore gears. With a robust motor, the 10 speeds are ideal and allow the use of a thick, stable and low-maintenance chain.


Shimano Rapidfitre plus SL-M6000


Shimano Deore CS-M4100 10S


AureusDrive 52T with trouser guard

Front derailleur

Shimano Deore RD-M6000 10s


KMC e10

/ The battery

The powerful 48 V battery with 14 Ah, integrated into the frame and easy to remove, provides 672 Wh of energy storage. The battery uses robust and durable Samsung lithium-ion cells. With this energy it is possible to drive up to 70 km in eco mode (45 km/h on the model).

Range at 45 km/h version

Eco(70km), Tour (50km), Speed(40km), Turbo (35km)



Battrie cells

SamsungLithium-ion cells

Material battery case


Range at 25km/h version

Eco(110km), Tour(80km), Speed(60km), Turbo(50km)


14Ah (672Wh)

Cell size

18650 cells(18mm diameter, 65mm length)


3.3 kg

/ The display

A 2.1-inch LCD display provides information on assistance level, miles traveled, speed, battery status, average speed and more.


2.1 inch



Number of support levels

4 (Eco,Tour, Speed, Turbo)


Warranty and upgrade option

3 year warranty on all components and the frame, excluding wear parts. For the battery, we guarantee 60% capacity after 2 years.

The Classic is available in 25km/h, as well as in 45km/h. An upgrade to 45km/h is possible at any time. The components are the same for both designs. The only difference is the gear ratio and the maximum speed at which the motor supports you.

For 45km/h you need a mandatory liability insurance with yellow number and at least a class M driver’s license.

The technical data of the Comfort at a glance

Frame:welded aluminum frame
Frame color:white, green or black, (color choice at extra charge)
Frame size:S (155cm-170cm) or M (170-185cm)
Tires:CST 700x35C (28 inch)
Weight (incl. battery)27kg
Engine:500 watt TSDZ 10 mid-mounted motor with speed and torque sensor
Display:2.1 inch LCD display
Pedal assistance:4-stage (Eco, Tour, Speed, Turbo)
Speed:25km/h or 45km/h
Battery:670 Wh lithium-ion battery
Range at 45km/h version:Eco (70km), Tour (50km), Speed(40km), Turbo (35km)
Range at 25km/h version:Eco(110km), Tour(80km), Speed(60km), Turbo(50km)
Battery charging time:Approx. 4 hours
Circuit:10-speed Shimano Deore gears
Brakes:Hydraulic brakes TEKTRO HD-T285
Suspension fork:Suntour Mobie A32 lockable
Saddle and handle:Velo brand ergonomic grips and saddle
Luggage carrier:Standard with luggage carrier
Handlebar:Zoom brand aluminum

Frequently asked questions

To save paper and protect the environment, the latest operating instructions for the Classic 25/45 are available in PDF format here.

The Classic model has a higher input than the Comfort model.

Unlike the Power 45, this model is designed for slightly shorter distances.

The advantage over the Power 45 is that on the one hand it is cheaper and still supports up to 45 km/h, and on the other hand it is trailer-compatible.

  1. AureusDrive relies on proven and robust technology for its components. To give you the best value for money, the components have also been selected according to this principle.
  2. We distribute our e-bikes ourselves without intermediaries. This allows us to offer our customers a lower price than our competitors.
  3. We have deliberately dispensed with additional features such as Bluetooth communication, 24-speed transmission or GPS tracking. Our g45c is simply an e-bike.

The recommendation for Comfort frames is as follows:

M: height 175cm – 195cm

S: body size S 160cm – 175cm

These are approximate sizes that usually fit very well. If the seating position no longer fits after a long ride after purchase, it is possible to change the handlebar stem with us or our partners.

Our range also includes adjustable stems, with which the seating position can be optimally adjusted:

Siehe hier:

If you order it together with your bike, we will mount the stem immediately.

Note that the recommendations are different for each model.

Your AureusDrive e-bike has a 3-year warranty on all components and the frame, excluding wear parts. We guarantee 60% battery capacity after 2 years.

Yes, of course. You can register with your nearest partner under “Support” on our website. Since we use standard parts, any bike mechanic can service our AureusDrive.

When fully discharged, a full charge takes 3 to 4 hours. Our charger charges the battery with a rather low current of 3 amps at 48 volts. This protects the Samsung battery cells and ensures a long battery life.

We have a battery with a capacity of 670 Wh. The autonomy of the battery depends on several factors, such as slope, weight of the rider, ambient temperature, assistance level, cadence and tire pressure.

The following intervals should be possible:

For the model with 45 km/h:

Eco (70 km), Tour (50 km), Speed (40 km), Turbo (35 km)

For the 25 km/h model:

Echo (110 km), Tour (80 km), Speed (60km), Turbo (50 km)

We supply electric bikes in white, black and green. Other colors and/or own brands are possible. We kindly ask you to contact us in this regard.

The cost of custom painting is about 800 francs.

The large display shows the speed in very large symbols. Next to the large display on the left side is a control for setting the support levels.

The small display has the same functions as the large one and offers a better view of the handlebar. In addition, the display is less conspicuous and a basket can be attached to the front of the Aureus.

The e-bike alone weighs 27 kg. The maximum total weight is 130 kg.

Assembly of all additional parts in our workshop is free of charge.

The frame is designed for a maximum weight of 25 kg.

Yes, the battery is designed to be easily removed each day and recharged at home. The corresponding charger has a charging current of 3 amps.

It is also possible to charge the battery mounted on the e-bike.

In the store you will find the current delivery dates for the respective models.

No, our electric bikes are not equipped with a brake light.