48V 1000W-1500W Fat Tire Electric Bike Conversion Kit - Waterproof Rear Hub Motor (20", 26" × 4.0")
Motor only / 48V1000W / China Mainland|20inch|Rear-Rotate 190mm
$535.68
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48V 1000W-1500W Fat Tire Electric Bike Conversion Kit - Waterproof Rear Hub Motor (20", 26" × 4.0")
$535.68
Unleash maximum electric power on snow, sand, loose gravel, and rugged off-road tracks with the 48V 1000W & 1500W Fat Tire Electric Bike Conversion Kit. Engineered specifically for 4.0-inch wide fat bike tires, this high-performance system features a heavy-duty direct-drive brushless gearless rear hub motor, an intelligent KT 35A motor controller, and a complete 1T5 waterproof cable harness. Delivering speeds up to 50 km/h (31 mph) and torque ratings up to 74.6 N·m, this kit provides extreme climbing capability and unstoppable all-season propulsion for 20'' and 26'' fat tire snow bikes.
Product Video Demonstration
Why Choose This High-Power 1000W / 1500W Fat Bike Kit?
- Direct-Drive High Speed & Durability: Brushless gearless hub motor construction has no internal plastic gears to wear out, providing ultra-quiet running, regenerative braking support, and sustained high-speed output.
- Dual Power Outputs (1000W & 1500W): Choose 1000W for speeds up to 45 km/h (59–60.3 N·m torque) or 1500W for blistering speeds up to 50 km/h (71–74.6 N·m torque).
- Fat Bike Rear Spacing Options: Engineered for fat bike rear triangles with 170mm (threaded freewheel or cassette) and 190mm (threaded freewheel or cassette) dropout configurations.
- Heavy-Duty KT 35A Controller: High-amperage controller provides stable current output with integrated thermal protection, paired with KT-LCD3 or KT-LCD5 digital display consoles.
- Safety Torque Arms Included: Includes two steel torque arms to lock the motor axle firmly in place, protecting your bicycle frame dropouts under high-torque acceleration.
- 1T5 Waterproof Quick-Disconnect Wiring: Features sealed, color-coded connectors for all handlebar controls (display, throttle, and dual brake sensors).
High-Performance KT 35A Controller & Accessories
The kit is driven by a KT 35A square/sine wave controller engineered to manage high continuous current draw effortlessly. Accompanied by sensitive thumb throttle controls, dual brake sensors for immediate motor power cut-off, and an intelligent pedal assist sensor (PAS), you maintain complete mastery over power delivery and ride safety.
Technical Specifications Comparison
| Specification | 48V 1000W Motor | 48V 1500W Motor |
|---|---|---|
| Motor Type | Brushless Direct-Drive Gearless Hub Motor | |
| Rated Voltage | 48V | |
| Maximum Speed | 40–45 km/h (25–28 mph) | 45–50 km/h (28–31 mph) |
| Rated RPM | 372–433 RPM | 414–487 RPM |
| Peak Torque | 59–60.3 N·m | 71–74.6 N·m |
| Rear Dropout Spacing | 170mm (Freewheel/Cassette) or 190mm (Freewheel/Cassette) | |
| Wheel / Rim Sizes | 20'' and 26'' Double-Wall Alloy Fat Rim (for 4.0'' Tires) | |
| Controller Model | KT 35A High-Power Brushless Motor Controller | |
| Brake Mounting | Standard 6-Bolt Disc Brake Mount (44mm BCD) | |
Intelligent KT Display Cockpit
Select your preferred cockpit display with KT-LCD3 or KT-LCD5 consoles. Both models provide real-time telemetry including current speed, average speed, max speed, trip odometer, battery capacity percentage, voltage, 5-level pedal assist adjustment, and cruise control settings.
What is Included in the Full Conversion Kit?
- 1 × 48V 1000W or 1500W Gearless Direct-Drive Rear Hub Motor Wheel (pre-laced on fat rim with 12G spokes)
- 1 × High-Power KT 35A Brushless Motor Controller
- 1 × Protective Controller Mounting Box
- 1 × Intelligent KT-LCD3 or KT-LCD5 Digital Display (based on kit selected)
- 1 × Ergonomic Thumb Throttle
- 1 × 1T5 Waterproof Main Wiring Harness
- 1 × Pair of Safety Power Cut-Off Brake Sensors
- 2 × Heavy-Duty Steel Torque Arms
- 1 × High-Accuracy Pedal Assist Sensor (PAS)
Note: If you select the "Motor only" option, you will receive only the motor wheel. For a complete electric conversion, select one of the full kit options. Battery is not included (requires a 48V battery rated for 35A continuous discharge).
Frequently Asked Questions
What is the top speed difference between 1000W and 1500W?
The 48V 1000W motor reaches top speeds of 40–45 km/h (25–28 mph) with 59–60.3 N·m of torque. The 48V 1500W motor reaches 45–50 km/h (28–31 mph) with 71–74.6 N·m of torque, offering significantly faster acceleration and stronger performance on steep hills and deep sand.
Why are torque arms included with this kit?
High-powered hub motors (1000W–1500W) exert substantial rotational torque on frame dropouts. The two included heavy-duty steel torque arms prevent the axle from spinning out or damaging your bicycle's dropouts during full-throttle acceleration.
How do I know if I need a 170mm or 190mm rear hub?
Measure the inside width between your fat bike's rear dropouts where the rear wheel axle sits. If the distance is 170mm, choose the 170mm option. If the distance is 190mm, choose the 190mm option. Make sure to match your gearing style (threaded rotate freewheel or slide-on cassette).
What battery is required for this 1000W/1500W conversion kit?
This system requires a 48V lithium-ion battery with a Battery Management System (BMS) rated for at least 35A continuous discharge current to match the KT 35A controller. A capacity of 15Ah to 25Ah is recommended for optimal performance and long ride distance.
Does E Smart Way provide warranty and free shipping?
Yes, all conversion kits ordered through E Smart Way include dedicated customer support, full warranty coverage, and free storewide shipping.
