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Qulbix Q140MD Core Race 2022 E-bike

1 - Wheelbase: 1290 cm

2 - Handlebar grip height: 115 cm (fork angle: 64°)

3 - Bottom bracket height: 340 mm

4 - Seat height: 90 cm

5 - Max. load capacity: moderate riding: 120kg; for hard off-road riding: 100kg

6 - Average rider: 1.8 m


The range of the e-bike always depends on consumption of power, which is determined by various factors, as the over-all weight of the bike, rider and equipment; riding surface and tyres, type of terrain, riding style etc.

Typical energy consumption:

  1. CRUISING: Low speed and low intensity riding, with a lot of pedalling - PAS system engaged, speeds up to 25-30km/h.
    Riding on flat, firm terrain with intermediate tyres and tyre pressure over 1,8 bar.
  2. MOST COMMON REAL LIFE RIDING: Medium to high speed riding, with speeds up to 50km/h.
    Riding on flat, mixed terrain (soft and hard) with MX tyres and tyre pressure over 1,8 bar.
    Moderate acceleration from low speeds / "medium" out of the corner acceleration.
  3. RACING: Full speed and high intensity riding, full throttle, maximum available power (12 kW max).
    Riding on up and down terrain, soft surface with MX tyres and tyre pressure over 1,6 bar.
    A lot of full throttle acceleration from low speeds - "hard" out of the corner acceleration.


The Q140MD Core is the only performance electric bike on the market that is truly modular in design. It has two seat types (classic bicycle or moto seat), two footing types (pedals or foot pegs) and three throttle set-ups you can choose from to transform your bike according to your riding needs.


Ride it like a/an:





Throttle control

By pedals and twist grip 2

By pedals (active PAS 1) only

By twist grip only

By twist grip only

Footing type



Foot pegs


Seat style 

Classic bicycle seat

Classic bicycle seat

Moto style seat

Moto style seat



Can be restricted to street- legal 25 km/h




Off-road trips, exploring nature

Commuting, getting a classic bicycle work-out


Training of MX tracks

Challenging off-road terrain, such as steep hills and on narrow forest paths

1 Pushing the pedals will activate the pedal assist sensor (torque/cadence); twisting the grip throttle will over-ride pedal assist and activate twist grip throttle. Using classic disc brakes or regenerative brake will cut off both types of throttle. For current PAS options available, contact the Qulbix team.

2 The bike can be started by pedals or twist grip throttle. Using twist grip throttle will over-ride and shut down pedal assist. Using classic disc brakes or regenerative brake will shut down pedal assist for safety reasons.

One bike. In 4 different ways.

Q140MD Core's Handlebar

The Core has three throttle set-ups:

  1. Classic moto style twist grip throttle - use only the twist grip to regulate throttle.
  2. Twist grip throttle AND pedal assist - use the pedals or the twist grip to regulate throttle. Using the twist grip will override the pedal assist throttle. This double throttle option is best for off-road trips, where you wish to have a workout, but also want to have maximum control over throttle in case the terrain gets too rough for pedals.
  3. Pedal assist - use only pedals to control throttle. For current pedal assist options available, contact the Qulbix team.

Throttle set-ups can be easily be regulated on your bike's display. You can also set up an end speed lock, at 25km/h.


In reality the Core is something in between a bicycle and a motorcycle, that's why we use the phrase "bike". Depending on how you set it up, that's the way it will behave. That's the beauty of it.

For example:

  1. if you set-up the top speed of 25 km/h, turn on the PAS (pedal assist system), use the classic bicycle seat and pedals you can ride it like a pedelec (but of course it will not run out of power on steep terrain, as a classic pedelec would);
  2. if you mount the moto seat and pegs, use only the grip throttle and use full 15kW power it will behave as a light e-motorcycle.

Most people praise the variability of the regen. Only advanced controllers allow this feature, more basic ones have none or just on/off. It does take some practice, but once you get used to it, it's quite easy to operate both - thumb on the regen and index finger on rear brake. Most of the time you do not need the hydraulic rear brake - just front and regen.

Variable regen brake is a real advantage, since you can moderate the braking force - and you gain back the energy, extend the range and save brake pads. To switch it to the hydraulic brake lever would be possible, but it could be only on/off and would loose the functionality. We can not moderate the regen braking force with such a short stroke of the brake lever. The regen has also integrated ABS functionality, and if pressed hard it is on the traction limit and when the bike enters the corner you can make a smooth slide.

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