20″ Step-Through 4.0 Fat Tire Electric Bike K8

500W Motor | 48V 10.4Ah Lithium Battery | 7-Speed Shimano | Custom Colors | 150kg Load Capacity

The K8 20″ Step-Through Fat Tire Electric Bike is built for riders who refuse to be limited by terrain. With a powerful 500W spoke wheel motor, a 48V 10.4Ah lithium battery, and grippy 20″ x 4.0 fat tires, the K8 glides over snow, sand, gravel, and city streets with ease.

Its step-through aluminum alloy frame makes mounting simple for every rider, while the snowmobile-specific oil-damped front fork smooths out rough roads. Choose from three riding modes — pure electric, pedal-assist, or manual — and enjoy a range of 30–40 km per charge.

🎨 Custom colors available. Built to order. Built to last.

• 🚲 Step-Through Aluminum Alloy Frame — Easy mount and dismount for all riders

• ⚡ 500W Spoke Wheel Motor — Strong, efficient power for any terrain

• 🔋 48V 10.4Ah Lithium Battery — 30–40 km range per charge

• 🏔️ 20″ x 4.0 Fat Tires — Superior grip on snow, sand, gravel & pavement

• 🎨 Custom Color Options — Make it yours

• 🛠️ Snowmobile-Specific Oil-Damped Front Fork — Smooth shock absorption

• ⚙️ Shimano 7-Speed Drivetrain — TX50 Dial + ZT50 Rear Pull

• 🛑 Front & Rear Mechanical Disc Brakes — Reliable, e-bike specific stopping power

• 💧 IP68 Waterproof Instrument — 5-speed display with USB charging

• 🔔 3-in-1 Switch — Horn, headlight, and turn signal in one

• 🦶 Half Aluminum Folding Pedals — Durable and space-saving

• 🚦 Brake-Activated Tail Light — One-way brake light function

• 🧠 12-Magnet Speed Sensor Booster — Smooth, responsive pedal assist

• 💪 150kg Load Capacity — Built for riders and cargo
  

  Three Riding Modes

  Mode	Description
  ⚡ Pure Electric	Full throttle power — no pedaling needed
  🚴 Electric Power Assistance	Motor + pedaling for longer range
  🦵 Human Powered Cycling	Ride like a standard bicycle

  Full Specifications Table

  Category	Specification
  Model	K8
  Frame Material	Aluminum alloy
  Seat Tube	Aluminum alloy
  Handlebar	Aluminum alloy, horizontal
  Tire Size	20″ x 4.0
  Tire Type	E-bike specific fat tire
  Motor	500W spoke wheel
  Battery	48V 10.4Ah lithium
  Range	30–40 km
  Speed	25–50 km/h
  Charger	Certified plug, 54.6VDC, 2.5mm head
  Controller	9-tube 25A sine wave brushless
  Instrument	5-speed, USB charging, IP68 waterproof
  Switch	3-in-1 horn / headlight / turn signal
  Main Line	7-in-1 IP68 waterproof cable
  Booster	Integrated 12-magnet speed sensor
  Front Fork	Snowmobile-specific oil-damped shock absorber fork
  Axis	Five-way 100 × 175
  Brakes	Front & rear mechanical disc (e-bike specific)
  Tooth Disc	Aluminum alloy crank 48T
  Dial	Shimano TX50
  Rear Pull	Shimano ZT50
  Flywheel	Shimano 7-speed
  Chain	Anti-rust, e-bike specific
  Mud Board	20″ x 4.0 semi-wrapped snow flying board
  Car Lights	Waterproof joint, 2-in-1 function
  Tail Lights	One-way brake light function
  Foot Pedal	Half aluminum alloy folding pedal
  Color	Customizable
  Net Weight	30 kg
  Gross Weight	40 kg
  Load Capacity	150 kg
  Packaging Size	148 cm × 32 cm × 83 cm

Container Loading (for wholesale buyers)

FAQ

Q: What is the range of the K8 e-bike?
A: 30–40 km per charge, depending on rider weight, terrain, and riding mode.

Q: Can I customize the color?
A: Yes — color customization is supported. Contact us for available options.

Q: What is the top speed?
A: 25–50 km/h, depending on mode and local regulations.

Q: How long does it take to charge?
A: Approximately 4–6 hours with the included 54.6VDC certified charger.

Q: What is the maximum load capacity?
A: 150 kg.

Q: Is it waterproof?
A: The instrument and main line are IP68 waterproof. We recommend avoiding deep water or heavy rain exposure.

Q: Do you offer wholesale or OEM?
A: Yes. We welcome wholesale and OEM orders. Container loading: 70 pcs per 20″ container, 170 pcs per 40 HQ.

Ready to Ride the K8?

🎨 Custom colors available · 📦 Wholesale & OEM welcome · 🚚 Worldwide shipping

📧 Email:info@bsocool.com 📞 Phone/WhatsApp: +8618275750015 | 🌐 www.bsocool.com