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Qulbix Q140MD 25kW: Extreme Output, Competition Ready

Elite-tier 25kW performance featuring high-discharge racing cells and heavy-duty power delivery for professional-level torque.

25 kW

Peak Power

+110 km/h

Top Speed

4.7 kWh

Battery capacity

QRBS

Quick-Swap Battery

+120km

Range

3h

Charge time

UNMATCHED POWER & HIGH-DISCHARGE PERFORMANCE

Performance that redefines the limits.

With 25kW of electrical power at your fingertips, you are commanding a machine built for professional racing and extreme vertical climbs. This is the ultimate power-to-weight ratio for riders who demand explosive acceleration and zero compromises in the most demanding conditions.

The Fardriver ND72680 controller is the heart of this system. Pushing a massive 680A maximum phase current, it is mounted high in the front of the frame to ensure maximum airflow cooling during high-load sessions. To support this massive throughput, the 25kW version features upgraded, thicker-gauge power cabling to minimize resistance and heat.

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The 72V (nominal) Li-ion battery maintains a 65Ah (4680Wh) capacity but is engineered with high-discharge cells specifically for the 25kW platform. While the capacity remains the same, the internal chemistry and construction are optimized to dump massive current consistently without voltage sag.

Versatile Charging: Featuring an on-the-battery charge plug, you can power up while the battery is inside the frame or quickly pull it out for convenient indoor charging.

Smart Monitoring: Use the JK BMS app to connect via Bluetooth. Monitor real-time cell voltages, balancing status, and discharge temperatures directly from your smartphone.

Stay on the move. Our unique removable battery system allows you to swap in a fresh pack in seconds, perfect for long days in the field.

Sport Use: Quick battery swaps between heats for uninterrupted track riding with two batteries.

Commuter Use: Easily remove the battery for charging at work or home.

Traveling Use: You can use the extra space under the hood and seat for an on-board charger.

Extremely cold environments: For maximum range in cold environments, charge the battery indoors at room temperature before placing it in the vehicle.

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The included 20A charger features an on-board display (V, A, Ah) to keep you informed about the charging status while you quickly top up for the next ride.

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ELITE DRIVE & RAW CONTROL

Maximum throughput. Racing-grade precision.

A high-performance 3-phase out-runner motor. The motor is a Qulbix version of the QS 205 V3 with the internal cooling fan/fins and Ferro Fluid for improved cooling.

Being direct-drive, it is ultra-silent and eliminates the maintenance and weight of additional primary gear reductions.

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To sustain this massive 25kW output without efficiency loss or heat buildup, we have upgraded the core architecture:

We’ve upgraded the motor with Ferro Fluid and internal air-cooling fins. This allow for longer hill climbs and high-power runs while the controller monitors temperatures to protect your investment.

Enhanced Phase Cabling: Features significantly thicker-gauge wiring to handle the increased amperage safely and efficiently.

High-Current Mapping: Fully adjustable throttle response and field weakening, allowing you to fine-tune the bike from a "controlled beast" for technical trails to an "all-out racer" for top-speed runs.

Silent Efficiency: Even at peak output, the sine-wave technology ensures near-silent motor operation and ultra-smooth power delivery across the entire RPM range.

The heart of the 25kW system is the fully programmable ND72680 sine-wave controller. Unlike standard setups, this high-output FOC (Field Oriented Control) unit is tuned to manage a staggering 680A of phase current, providing the instantaneous torque required for professional-level riding and extreme climbs.

Choose your balance. We recommend 26T/30T for 100km/h top speed. This gear ratio is suitable for riding on a flatter terrain, with not much elevation. A shorter gearing (26T/34T or 26T/38T) is more suitable for dedicated off-road climbing without sacrificing too much velocity.
A 26T/38T top speed will be around 80 km/h, but the wheel torque will be the highest.

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Q140MD Performance Electric Bike & Frame Kit

Full control at your fingertips. Choose between the minimalist 3-inch TFT for off-road focus or the 5-inch TFT media display for detailed telemetry and navigation.

Both displays use CAN BUS to communicate with the controller, to show a wide range of information.

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RACE-SPEC CHASSIS & PRECISION HANDLING

Engineered for the rough stuff.

Front: Fastace ALX13RC 2.0 forks (200mm travel) with adjustable compression and rebound.

Rear: Fastace hydraulic shock with 220mm of wheel travel and adjustable preload/damping/compression.

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Qulbix FastAce BDA53RC Rear Shock Absorber

System that stops fast and stays cool. Magura 4-piston calipers are paired with heavy-duty 203mm (2.3mm thick) rotors. These calipers are made of one-piece aluminium block for maximum rigidity. The pistons are made of ceramic.

We combine these with Zoom levers with adjustable reach because of its large oil reservoir, oil level inspection window and integrated switch.

Use the left-thumb button to slow down via the motor. It recharges the battery, saves your brake pads, and provides incredible control on steep descents.

Because the 25kW model is equipped with a high-discharge racing battery, the system can accept significantly higher recharge currents during aggressive braking.

Thermal Efficiency: The racing cells handle the rapid energy influx with minimal heat buildup, ensuring consistent performance even on long downhill runs.

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By sharing the pivot axis between the motor and swing-arm, we minimize un-sprung mass and eliminate chain sag, resulting in a simpler, lighter, and more responsive ride.

The rider can also adjust the rear shock stiffness by using different mounting positions on the rear shock bracket.

A frame bracket can also be rotated, adjusting the height of the rear end.

Q140MD Performance Electric Bike & Frame Kit - Swing Arm

PRACTICALITY & CUSTOMIZATION

Not just a racing machine.

A shell-type frame made of high-tensile (1200 N/mm²) Cr-Mo steel. It is watertight and built to last a lifetime.

Use the internal frame space as a secure, lockable compartment for your wallet, or a phone.

The extra compartment under the moto seat provides room for tools, spare tubes, or a rain jacket. While not lockable, this added space makes the bike a truly practical machine, not just an off-road racer.

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Configure the bike to your style—choose between footpegs or pedals, and a moto-style or bicycle seat.

Q140MD Performance Electric Bike & Frame Kit - Footing & Crank Options

All models include a 12V DC-DC converter and Alarm. The wiring is already in place for mirrors, horns, and lights, making it easy to opt for street-legal components.

Q140MD Performance Electric Bike & Frame Kit - Road Legal Set for Q140MD

The Q140MD is IP65 ready. You can clean it with water jets—just dry it out and lube the moving parts to stay trail-ready

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MASTER THE Q140MD EXPERIENCE

See it in Action

A 12-minute raw look at how the Q140MD handles real-world terrain. This time on the Road.

Technical Walkthrough

Everything you need to know about the frame, battery, suspension, motor, and electronics.

Qulbix Philosophy

Discover the passion behind the craft. From the first weld to the final bolt, see how we build world-class electric performance in the heart of Europe.

PHOTO GALERY

WHAT'S INCLUDED

12V ready

12V DC converter included

fast Charger

Global voltage compatible

Alarm

For added security

Mudguard Set

Included

Kickstand

Included

bash guard

Protect the frame

STANDARD PERFORMANCE VS. EXTREME OUTPUT

Q140MD 25kW

€ 5.899,40

VAT excl.

basic configuration

Extreme acceleration, designed for professional racing.

Peak Power 25 kW
Heavy-Duty 6AWG Phase Wires
Max Torque +400 Nm
Controller Fardriver ND72680 (680A Phase)
350A Discharge 72V/65Ah/4680Wh Li-ion battery
Top speed over 110 km/h
Range over 120 km (at 40Wh/km)

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Q140MD 14kW

€ 5.240,00

VAT excl.

basic configuration

Massive torque, optimized for long-range trail & enduro.

Peak Power 14 kW
Standard 8AWG Phase Wires
Max Torque +300 Nm
Controller Fardriver ND72450 (450A Phase)
200A Discharge 72V/65Ah/4680Wh Li-ion battery
Top speed over 100 km/h
Range over 120 km (at 40Wh/km)

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SPECIFICATION TABLE Q140MD 25kW

Power	25 kW (max. electrical power)
Max. speed	+110 km/h (26T/26T chain-wheel combo, battery at 100%)
Range (90kg rider)	120 km (72v 65ah battery, 40 Wh/km)
RO mass	51 kg (vehicle without the battery)
Maximum load	120 kg (rider+equipment)
Seat height	900 mm
Configuration	Pure electric
Throttle	Right hand twist operated throttle.
Regen	Left-thumb operated Regen button, Brake switch actuation (F/R/Both - this is optional!)
Battery capacity and weight	4680 Wh, 25 kW (72V 65Ah), 19,9 kg
Motor type	3 phase brush-less with permanent magnet. FF and Air cooled (added fins).
Controller functions	Fardriver ND72450 Sine-wave (FOC) controller, regen, field weakening, silent motor operation.
Energy consumption	Normal riding: 40 Wh/km
Charging time	20A charger: 72V 65Ah – 3h
Battery cell chemistry	Lithium-ion
Charger weight	3 kg
Displayed info	Voltage, SOC, speed, power, motor/controller temperature, power, trip meter, odometer and more.
Front wheel suspension	Fastace ALX13RC 2.0 front suspension, inverted, 200mm travel, spring 60lbs. Adjustable compression and rebound.
Rear wheel suspension	Fastace shock absorber with steel spring and hydraulic damping. Adjustable spring preload, compression and rebound. Rear wheel travel: 220mm. Standard spring stiffness: 550lb.
Wheel dimensions	MX: Front: 19'', rear: 16'' with rim lock. ROAD: front: 16'', rear: 16''
Brakes	Magura MT5 4 pistons with ZOOM breake lever, 203mm x 2,3mm rotor, with oil reservoir level window and integrated brake switch.
Frame material	Super strong construction steel and high tensile strength aluminium.
Foot pegs	Aluminium foldable foot pegs with removable grip studs
Pedals	Overdrive dual stage gearing 30-12-30T, 120mm cranks, pedals with grip studs
Street-legal status	Without the type approval. Off-road / closed circuit use only.

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Qulbix Q140MD 25kW: Extreme Output, Competition Ready

25 kW

+110 km/h

4.7 kWh

QRBS

+120km

3h

Brutal 25kW Peak Power

4.7kWh High-Discharge Racing Battery

QRBS (Quick-Swap Battery System)

Fast 20A Charging

QS205MD Direct-Drive Motor

Heavy-Duty Power Delivery

Competition-Spec Fardriver Controller

Optimized Gearing

The Rider’s Cockpit

High-Travel Suspension

Elite Stopping Power

High-Performance Regenerative Braking

Co-Axial Pivot Design

Virtually Indestructible Frame

Integrated Storage

Modular Layout

Street-Ready Foundation

Washing & Cleaning

See it in Action

Technical Walkthrough

Qulbix Philosophy

12V ready

fast Charger

Alarm

Mudguard Set

Kickstand

bash guard