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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23
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Description
HKM-678803 750W Electric Fat Tire Bike - 20 Inch Wheels, 7 Speed, 48V Lithium Battery, Classic Cafe Racer DesignHKM678803 750W Electric Fat Tire Bike Cafe racer silhouette meets modern electric performance a bold machine for urban streets and beyond. The HKM678803 fuses retro caf racer aesthetics with a hightorque 750W rearhub motor, chunky 20inch fat tires, and a meticulously engineered 48V drive system. Its stance is aggressive yet refined, delivering a riding experience that feels equally at home carving through downtown traffic or kicking up dust on gravel
HKM‑678803 750W Electric Fat Tire Bike
Cafe racer silhouette meets modern electric performance — a bold machine for urban streets and beyond.
The HKM‑678803 fuses retro café racer aesthetics with a high‑torque 750W rear‑hub motor, chunky 20‑inch fat tires, and a meticulously engineered 48V drive system. Its stance is aggressive yet refined, delivering a riding experience that feels equally at home carving through downtown traffic or kicking up dust on gravel trails. Every detail — from the color‑matched frame welds to the intuitive digital cockpit — has been designed for riders who refuse to compromise on style or substance.
Performance‑Engineered Drive System
750W High‑Torque Rear Hub Motor
The gearless brushless motor delivers instant thrust and quiet operation. With a peak output well above nominal, it tackles 15‑degree inclines without hesitation, offering a throttle‑controlled max speed of 31 mph (50 km/h) and a pedal‑assist sweet spot for cruising around 19 mph (30 km/h).
48V High‑Density Lithium Battery
The removable 48V lithium‑ion pack employs smart BMS (Battery Management System) for over‑charge, over‑discharge, and temperature protection. Real‑world range spans 19–37 mi (31–60 km) depending on assist level, rider weight, and terrain — enough for a full week of commuting between charges.
Top Speed
31 mph (50 km/h)
Max Range (Pedal Assist)
37 mi (60 km)
Rider‑Focused Control & Comfort
Front Suspension Fork
A telescopic front fork with progressive spring damping irons out potholes, curbs, and trail chatter. The responsive travel maintains steering precision while notably reducing rider fatigue over long distances.
Shimano 7‑Speed Drivetrain
The crisp, reliable Shimano rear derailleur puts seven perfectly spaced ratios at your thumb. Shift seamlessly on the move — whether you’re accelerating from a stoplight or climbing a loose‑gravel incline.
Dual Disc Brakes
Mechanical disc brakes front and rear deliver consistent, powerful stopping performance in rain, dust, or mud. The large rotors shed heat quickly, giving you confident control on steep descents.
Backlit Digital Cockpit
The centrally mounted LCD screen presents real‑time speed, battery gauge, assist level, odometer, and trip distance at a glance. The anti‑glare surface remains readable even in direct sunlight.
Iconic Cafe Racer Styling, Robust Build
The HKM‑678803’s elongated saddle, dropped handlebar stance, and sculpted frame evoke the golden era of custom motorcycles — yet every tube and weld is engineered for modern e‑bike durability. Fat 20‑inch tires provide a generous contact patch, absorbing vibrations and enhancing stability on pavement, hardpack, and loose surfaces alike.
20" × 4.0" Fat Tires
Puncture‑resistant compound with aggressive tread blocks for confident grip on diverse terrain.
High‑Tensile Steel Frame
Net weight 92.6 lb (42 kg), payload capacity 101.4 lb (46 kg) — robust yet manageable.
Available Colorways
Technical Specifications
Intelligent Ride Technology
Beyond the raw numbers, the HKM‑678803 integrates subtle yet impactful smart features that elevate everyday usability. The controller delivers smooth, ramped power delivery — no jerky starts — while regenerative‑style engine braking helps preserve brake pads on long descents. An optional walk‑assist mode lets you push the bike effortlessly when dismounted. The twist throttle and cadence‑based pedal assist work in harmony, offering five levels of assistance that you can tailor to your fitness level or desired range.
Advantages Over Conventional E‑Bikes
Fat Tire Versatility
20x4.0 tires float over sand, snow, and roots — terrain that stops skinny‑tire commuters in their tracks.
Retro‑Modern Identity
Cafe racer styling isn’t just aesthetic — the lower center of gravity enhances cornering stability and rider confidence.
Shimano Reliability
Unlike generic derailleurs, genuine Shimano indexing provides crisp, miss‑free shifts — ride after ride.
Frequently Asked Questions
What real‑world range can I expect?
Range varies with rider weight, terrain, assist level, and weather. In Eco mode on flat pavement, experienced riders report up to 37 mi (60 km). Sport mode with throttle usage typically yields around 19–24 mi (31–38 km).
Is the battery removable for charging?
Yes. The 48V pack slides out with a key‑lock mechanism, allowing you to charge indoors or swap with a spare for extended adventures.
Does it ship as a class 2 or class 3 e‑bike?
The HKM‑678803 can be configured via its display to comply with local regulations. It supports both throttle‑only operation (Class 2) and pedal‑assist up to 28 mph (45 km/h) where permitted. Always check your local e‑bike laws.
What is the recommended rider height?
The frame geometry suits riders between 5'4" and 6'4" (162–193 cm) comfortably. The seat post and handlebar offer generous adjustability.
Purchase Protection & Peace of Mind
On all orders, no minimum — straight to your door.
Extended coverage against manufacturing defects.
Not satisfied? Return within 30 days for a full refund.
Comprehensive coverage on motor, battery, and frame.
Experience the fusion of vintage charisma and electric innovation. The HKM‑678803 750W Electric Fat Tire Bike — designed for the modern explorer.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy