HKM-316051 Electric Fat Tire Mountain Bike

Engineered for boundless exploration — master city streets and mountain trails with unstoppable electric torque.

Motor & Power Delivery

The heart of the HKM-316051 is a robust 1000‑watt brushless hub motor, engineered to produce instant, responsive torque. With peak output exceeding 85 Nm, the motor conquers steep inclines up to 20° without hesitation. Advanced sine‑wave controller technology ensures smooth, quiet acceleration — whether you’re using the twist throttle or the 5‑level pedal assist system. The intelligent motor management automatically adapts power delivery based on terrain, preserving efficiency and extending battery life on longer rides.

Riders will appreciate the seamless integration of power modes: choose from Eco, Tour, Sport, Turbo, and Walk assist. Each mode recalibrates the torque curve and speed cap, giving you precise control over your ride. The motor’s sealed construction is rated IP65 against dust and water, so creek crossings and muddy trails won’t slow you down.

Battery & Range

The high‑capacity 48V 16Ah lithium‑ion pack delivers 768 watt‑hours of energy, providing a practical riding range of 19 to 37 miles (31 to 60 km) on a single charge. Actual range depends on riding style, terrain, assist level, and rider weight. The battery is composed of premium 21700 cylindrical cells, known for their high energy density and cycle life — rated for over 800 charge cycles before reaching 80% capacity.

A smart Battery Management System (BMS) continuously monitors cell voltage, temperature, and current, protecting against overcharge, over‑discharge, and short circuits. The removable pack can be charged on or off the bike in approximately 6–7 hours with the included 2A smart charger. An LED charge indicator on the battery itself gives you a quick status check before you head out.

7‑Speed Gear System

The 7‑speed drivetrain features a reliable Shimano‑compatible rear derailleur and a wide‑ratio cassette (14‑28T). This setup gives you the flexibility to spin comfortably on steep climbs and maintain efficiency at higher speeds on flat roads. The indexed shifter provides crisp, precise gear changes with a short thumb throw, so you can react instantly to changing gradients.

Coupled with the motor’s pedal assist, the gear system allows you to find the perfect cadence. In hilly terrain, you can drop into a lower gear and let the motor do the heavy lifting, while on descents or open stretches, a higher gear lets you cruise with minimal effort. The chain and sprockets are treated with anti‑rust coating for durability in wet conditions.

Frame & Construction

Crafted from 6061 aluminum alloy using triple‑butted hydroforming, the frame achieves an ideal balance of lightness and durability. The step‑through geometry accommodates a wide range of rider heights (approx. 5'2" to 6'4") and makes mounting effortless, even when wearing bulky gear. The frame’s internal cable routing keeps the silhouette clean and protects cables from snagging on branches or rocks.

Total bike weight is approximately 66 lbs (30 kg), including the battery. The robust rear rack mount can support an additional 55 lbs (25 kg) of cargo, turning the bike into a capable utility vehicle for grocery runs or bikepacking. The aluminum alloy also provides natural corrosion resistance, extending the bike’s service life in coastal or humid environments.

20" x 4.0" Fat Tires

The oversized 20‑inch by 4.0‑inch tires are the defining feature of this electric mountain bike. With a large contact patch, they float over soft surfaces such as sand, snow, and loose gravel, providing exceptional stability where standard tires would sink. The aggressive tread pattern channels mud and water away, maintaining grip on wet roots and rocks.

Running at low pressures (5–30 PSI), the tires act as natural suspension, absorbing trail chatter and reducing rider fatigue on bumpy terrain. The 20‑inch diameter keeps the bike’s overall wheelbase compact, enhancing maneuverability in tight singletrack or urban environments. The rims are double‑wall aluminum, reinforced to handle the extra stress of fat tire cornering.

Braking System

Stopping power is provided by front and rear mechanical disc brakes with 180 mm (7.1 inch) rotors. The large rotor diameter increases heat dissipation and reduces fade during long descents, while the mechanical calipers offer consistent lever feel and easy maintenance. Both levers feature a motor cutoff switch that instantly disengages power when braking, adding a critical safety layer.

Whether you’re coming to a controlled stop on a gravel road or need an emergency halt in traffic, the disc brakes deliver reliable, modulated braking. The sintered metal pads are long‑lasting and perform well in wet conditions, giving you confidence in all weather.

LCD Display & Controls

The backlit LCD display keeps vital ride data in clear view: current speed, battery level, trip distance, odometer, assist mode, and motor output wattage. The high‑contrast screen remains readable in direct sunlight and automatically adjusts brightness for night riding. Simple three‑button controls allow you to toggle modes without taking your hands off the grips.

The display also provides diagnostic codes for system troubleshooting, making it easy to check motor, battery, or controller status. With the USB charging port on the display base, you can keep your phone or GPS topped up during long adventures.

Personalization Options

The HKM-316051 can be tailored to your taste with a choice of frame colors and the option to add a custom logo or decal. Whether you prefer a stealthy matte black or a vibrant electric blue, the high‑quality paint finish resists scratches and UV fading. The personalized badge can feature your initials, a club emblem, or your brand — making your bike truly one of a kind.

Beyond aesthetics, the cockpit is adjustable: the handlebar stem angle and seat post height can be fine‑tuned for ergonomic comfort. Optional accessories like fenders, a headlight, and a rear rack are available to configure the bike exactly to your needs.

Ride Everywhere

From the morning commute through city streets to weekend expeditions on forest trails, the HKM-316051 adapts effortlessly. The fat tires absorb potholes and train tracks, while the powerful motor lets you keep pace with traffic. On weekends, lower the tire pressure and tackle beach sand, snowy paths, or rocky fire roads — the bike’s versatility reshapes your idea of where a bicycle can go.

The ergonomic saddle and lock‑on grips reduce fatigue on long rides, and the adjustable pedal assist means you can arrive at work without breaking a sweat. When the trail gets technical, the responsive handling and low center of gravity inspire confidence.

Technical Specifications

*Range varies with terrain, rider weight, pedal assist level, and weather. **Top speed can be electronically limited to comply with local e‑bike regulations.

Why the HKM-316051 Stands Out

• Instant Torque — 1000W motor accelerates from a standstill smoothly, no lag.
• All‑Terrain Capability — fat tires and powerful motor let you roam beyond pavement.
• Long‑Range Battery — 768 Wh capacity outlasts many competitors in its class.
• Custom Identity — choose your color and add a personal logo.
• Safety First — motor cutoff switches in brake levers for instant power cut.
• Low Maintenance — reliable mechanical discs and sealed bearings reduce service needs.

Frequently Asked Questions

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