KOOLUX X9 750W 20-Inch Fat Tire Electric Bike – 48V 15.6Ah

Experience powerful electric assistance and stable all-terrain riding with the KOOLUX X9 Fat Tire Electric Bike. Designed for commuting, leisure and outdoor cycling, the X9 combines a 750W brushless rear hub motor, 48V 15.6Ah lithium-ion battery, Shimano 7-speed drivetrain and wide 20 × 4-inch pneumatic fat tyres.

The rear hub motor delivers approximately 70–80 Nm of torque, providing strong assistance for urban roads, inclines and recreational routes. Its integrated 48V battery provides a streamlined frame design, while front and rear disc brakes deliver dependable stopping control.

A 3.5-inch colour LCD display provides convenient access to essential riding information, while the strong carbon-steel frame supports riders weighing up to 120 kg.

Key Features

• 750W Brushless Rear Hub Motor – Delivers strong, smooth electric assistance.
• 48V 15.6Ah Lithium-Ion Battery – High-capacity rechargeable battery integrated into the frame.
• Up to 70–150 km Estimated Range – Designed for commuting and longer recreational journeys.
• 45–50 km/h Maximum Speed – High-performance electric assistance for suitable riding environments.
• 70–80 Nm Torque – Provides strong acceleration and climbing support.
• 20 × 4-Inch Fat Tyres – Wide pneumatic tyres provide increased traction and stability.
• Shimano 7-Speed Drivetrain – Multiple mechanical gears for changing terrain.
• Front & Rear Disc Brakes – Provides controlled braking at both wheels.
• 3.5-Inch Colour LCD Display – Displays important riding and system information.
• IP54 Protection Rating – Provides protection against limited dust ingress and water splashes.
• Carbon-Steel Frame – Strong construction designed for everyday and recreational use.
• Up to 25° Climbing Angle – Designed to support riding on moderate inclines.
• 120 kg Maximum Rider Weight – Strong adult riding platform.
• Non-Folding Design – Solid full-frame construction.
• Accessories Included – Supplied with air pump, bicycle lock and bell.

Product Specifications

Brand: KOOLUX
Model: X9
Product Type: Fat Tire Electric Mountain Bike
Recommended Users: Adults & Teen Riders Within Approved Size and Weight Range
Motor Power: 750W
Motor Type: Brushless Rear Hub Motor
Torque: Approximately 70–80 Nm
Battery Type: Rechargeable Lithium-Ion
Battery Voltage: 48V
Battery Capacity: 15.6Ah
Battery Energy: Approximately 748.8Wh
Battery Position: Integrated Within Frame
Estimated Riding Range: Approximately 70–150 km
Maximum Speed: Approximately 45–50 km/h
Charging Time: Approximately 6–7 Hours
Drivetrain: Shimano 7-Speed
Wheel Size: 20 Inches
Tyre Size: 20 × 4 Inches
Tyre Type: Pneumatic Fat Tyres
Braking System: Front & Rear Disc Brakes
Frame Material: Carbon Steel
Display: 3.5-Inch Colour LCD
Protection Rating: IP54
Maximum Climbing Angle: Approximately 25°
Maximum Rider Weight: 120 kg
Expanded Dimensions: 1650 × 690 × 1140 mm
Design: Non-Folding
Net Weight: 41.5 kg
Gross Weight: 49.6 kg
Package Dimensions: 1450 × 280 × 870 mm
Colour: Black

750W Brushless Rear Hub Motor

The KOOLUX X9 features a 750W brushless rear hub motor producing approximately 70–80 Nm of torque.

This electric drive system provides assistance for:

• Daily commuting
• Moderate inclines
• Gravel and countryside routes
• Recreational trails
• Longer outdoor rides
• Mixed urban and recreational cycling

The brushless motor design provides smooth power delivery without requiring the maintenance associated with conventional brushed motors.

48V 15.6Ah Lithium-Ion Battery

The X9 uses a 48V 15.6Ah rechargeable lithium-ion battery, providing approximately 748.8Wh of nominal battery energy.

The battery is integrated within the bicycle frame, creating a cleaner appearance while keeping the battery positioned centrally within the bike.

Charging time is approximately 6–7 hours.

Riding Range

The KOOLUX X9 provides a listed estimated riding range of approximately 70–150 km per charge, depending on operating conditions and riding mode.

Range is influenced by rider weight, terrain, speed, assistance level, gradients, tyre pressure, weather and battery condition.

Shimano 7-Speed Drivetrain

A Shimano 7-speed transmission provides multiple mechanical gears for different riding conditions.

Riders can select lower gears for hills and slower riding or higher gears for flatter routes and faster recreational cycling.

The mechanical drivetrain works alongside the electric assistance system to provide greater flexibility across changing terrain.

20 × 4-Inch Fat Tyres

Wide 20 × 4-inch pneumatic fat tyres provide a broad contact area for increased traction, stability and cushioning.

The tyre configuration is suitable for:

• Urban roads
• Gravel
• Countryside routes
• Recreational trails
• Beach and soft surfaces
• Uneven outdoor paths

The large tyre volume also helps absorb smaller surface irregularities during everyday riding.

Front & Rear Disc Brakes

The X9 features disc brakes at both the front and rear wheels, providing controlled stopping performance for urban commuting and recreational outdoor riding.

The braking system complements the bike's 750W motor and wide tyres, providing greater rider control across changing surfaces.

3.5-Inch Colour LCD Display

The handlebar-mounted 3.5-inch colour LCD display provides convenient access to essential riding information.

Displayed information includes key operating data such as:

• Current speed
• Battery level
• Assistance mode
• Travel distance
• Riding status

IP54 Protection

The KOOLUX X9 carries an IP54 protection rating, providing protection against limited dust ingress and water splashes.

The bicycle should not be submerged or exposed to high-pressure water during cleaning. Electrical components, connectors and charging interfaces should be kept protected from excessive moisture.

Carbon-Steel Frame

A strong carbon-steel frame provides a durable platform for the motor, battery and fat-tyre wheel system.

The non-folding construction provides a solid full-frame design for commuting and recreational outdoor cycling.

Suitable Riding Applications

The KOOLUX X9 is suitable for:

• Daily urban commuting
• Recreational cycling
• Gravel roads
• Countryside routes
• Selected trails
• Moderate hills
• Longer-distance rides
• Beach and soft-surface riding
• General outdoor transportation
• Weekend leisure cycling

Included Accessories

The standard package includes:

• KOOLUX X9 Electric Bike
• Air Pump
• Bicycle Lock
• Bell

Dimensions & Weight

Expanded Size: 1650 × 690 × 1140 mm
Net Weight: 41.5 kg
Gross Shipping Weight: 49.6 kg
Package Size: 1450 × 280 × 870 mm
Maximum Rider Weight: 120 kg

Safety & Road-Use Information

Always wear an appropriate cycling helmet and inspect the brakes, tyres, wheels, battery, drivetrain, electrical connections and frame fasteners before riding.

With a listed 750W motor and maximum speed of approximately 45–50 km/h, road-use requirements can differ between jurisdictions. Riders should follow applicable electric bicycle regulations for public-road operation.