QNUT BK20 Electric Motorbike

$859.00 USD
Shipping fees will be calculated at checkout.
  • Battery: 48V, 18Ah

  • Motor: 500W

  • Top Speed: 28 MPH

  • Range: 60-90 Miles

Quantity
Free shipping
1-Year warranty
Secure payments
Dedicated support

Features

3-Speed Throttle. Ride Your Way
Choose your speed with precision:
Gear 1: Cruise smoothly at 15 mph
Gear 2: Ride efficiently at 20 mph
Gear 3: Unleash full power at 28 mph
From city streets to open roads, twist the throttle and go.
20 × 4.0" Fat Tires. Confident on Any Surface
Whether it’s cracked pavement, loose gravel, or beach sand, the 20 × 4.0" fat tires offer a stable, cushioned ride. The wide tread grips with confidence—absorbing shocks and keeping you balanced wherever you roll.
Cold Start Throttle. Instant Power, No Pedaling
Forget pedaling. The BK20’s cold start throttle delivers instant acceleration from a dead stop. Red light? Steep hill? Just twist the throttle. This is pure, on-demand power engineered for effortless takeoffs and a true motorbike feel.
Comfort That Looks as Good as It Feels
Sink into the BK20's wide, ergonomic saddle. Wrapped in a rugged, vintage-style leatherette, it’s built for long-haul comfort and designed to turn heads. It’s the perfect blend of plush support and timeless style for a ride that feels as good as it looks.
3-Speed Throttle. Ride Your Way
Choose your speed with precision:
Gear 1: Cruise smoothly at 15 mph
Gear 2: Ride efficiently at 20 mph
Gear 3: Unleash full power at 28 mph
From city streets to open roads, twist the throttle and go.
20 × 4.0" Fat Tires. Confident on Any Surface
Whether it’s cracked pavement, loose gravel, or beach sand, the 20 × 4.0" fat tires offer a stable, cushioned ride. The wide tread grips with confidence—absorbing shocks and keeping you balanced wherever you roll.
Cold Start Throttle. Instant Power, No Pedaling
Forget pedaling. The BK20’s cold start throttle delivers instant acceleration from a dead stop. Red light? Steep hill? Just twist the throttle. This is pure, on-demand power engineered for effortless takeoffs and a true motorbike feel.
Comfort That Looks as Good as It Feels
Sink into the BK20's wide, ergonomic saddle. Wrapped in a rugged, vintage-style leatherette, it’s built for long-haul comfort and designed to turn heads. It’s the perfect blend of plush support and timeless style for a ride that feels as good as it looks.
Bright, Focused, and Road-Ready
The BK20’s high-intensity headlight cuts through the dark with precision, lighting your path and making you visible to others. Whether you’re riding at dawn, dusk, or deep into the night, it ensures you see and are seen—for a safer ride every time.
Rear Light System. Stay Seen, Stay Safe
The BK20’s integrated rear light system features a bright tail light, responsive brake light, and built-in turn signals—keeping you visible and predictable from behind. Whether you're slowing down or changing lanes, your every move is clearly communicated to drivers and riders around you.
5.6" Color Display. Real-Time Ride Data
Your vital stats, front and center. The BK20’s vibrant 5.6-inch full-color display delivers everything you need at a glance—speed, battery life, and gear selection—all in sharp, sunlight-readable clarity. Stay informed without distraction.
Dual Disc Brakes. Stop with Confidence
Equipped with front and rear mechanical disc brakes, the BK20 delivers reliable stopping power in all conditions. Whether you're cruising or at top speed, safety comes first—every time you squeeze the lever.
Bright, Focused, and Road-Ready
The BK20’s high-intensity headlight cuts through the dark with precision, lighting your path and making you visible to others. Whether you’re riding at dawn, dusk, or deep into the night, it ensures you see and are seen—for a safer ride every time.
Rear Light System. Stay Seen, Stay Safe
The BK20’s integrated rear light system features a bright tail light, responsive brake light, and built-in turn signals—keeping you visible and predictable from behind. Whether you're slowing down or changing lanes, your every move is clearly communicated to drivers and riders around you.
5.6" Color Display. Real-Time Ride Data
Your vital stats, front and center. The BK20’s vibrant 5.6-inch full-color display delivers everything you need at a glance—speed, battery life, and gear selection—all in sharp, sunlight-readable clarity. Stay informed without distraction.
Dual Disc Brakes. Stop with Confidence
Equipped with front and rear mechanical disc brakes, the BK20 delivers reliable stopping power in all conditions. Whether you're cruising or at top speed, safety comes first—every time you squeeze the lever.

FAQ

1. Is the QNUT e-bike safe to ride for beginners?

Yes. At QNUT, rider safety is engineered into every detail. From power management to system diagnostics, QNUT e-bikes are built with smart protections to ensure a secure and intuitive riding experience for all riders, including beginners.

2. What is Level 0 Safety Mode?

All QNUT e-bikes include a Level 0 pedal-only mode, which fully disables motor assistance.

  • No motor assistance is activated
  • The bike operates like a traditional bicycle
  • Motor assistance only engages when the rider intentionally increases the pedal assist level

This ensures riders always maintain full control from the first pedal stroke.

3. How does the brake safety system work?

QNUT e-bikes are equipped with an integrated brake sensor cutoff system.

When the brake lever is applied:

  • Motor power is immediately disengaged
  • Pedal assistance stops instantly
  • Braking becomes smoother and more responsive

This helps improve safety during sudden stops or emergency braking situations.

4. Does the bike have overheating protection?

Yes. QNUT e-bikes feature smart thermal protection to help protect the motor and drivetrain.

The system continuously monitors internal temperatures. If temperatures exceed safe operating levels, the motor power will automatically reduce or disengage to help prevent overheating and long-term component damage.

5. Does the bike have throttle protection?

Yes. QNUT e-bikes include throttle protection designed to prevent excessive stress on the drive system.

If the throttle is continuously activated for an extended period, the system may temporarily limit output to reduce strain on the motor and drivetrain, helping maintain long-term performance and reliability.

6. How does battery protection work?

QNUT e-bikes use an advanced Battery Management System (BMS) with over-current protection.

The BMS provides:

  • Continuous battery health monitoring
  • Over-current protection
  • Automatic sleep mode during extended periods of inactivity

These protections help improve battery safety, extend battery lifespan, and maintain long-term reliability.

7. Does the bike have self-diagnostic features?

Yes. QNUT e-bikes feature real-time smart diagnostics.

The controller continuously performs system checks and displays error codes when issues are detected.

This helps riders quickly identify and troubleshoot operational problems with clear and actionable information.


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8. How long will shipping take?

For in-stock QNUT e-bikes:

  • Delivery typically takes 3–7 business days, depending on your location.

For accessories:

  • Shipping may take 10–20 business days when shipped separately.

Once your order ships, you will receive tracking information via email.

9. Is there any warranty?

Yes. QNUT products include a limited warranty.

  • Electronic components: 1-year warranty
  • Frame: Covered against manufacturing defects for the original owner

For warranty assistance, please contact us at:

Email: support@qnutbike.com

For full warranty terms, please visit our Warranty Policy.

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