HKM-351123 20x4.0 Fat Tire Electric Bike - 2000W Off-Road Moped Style with Max Speed 60km/h

The heart of the HKM-351123 is a high‑torque 2000‑watt brushless rear hub motor. Engineered with neodymium magnets and a refined stator design, it delivers immediate throttle response and strong low‑end pull. Whether you’re launching from a stoplight or grinding up a 20 % grade, the motor maintains consistent output without overheating.

The controller intelligently modulates power delivery across five pedal‑assist levels plus a pure throttle mode. Riders can expect a top speed between 25 and 37 mph (40 and 60 km/h) depending on terrain, rider weight, and assist level — putting it in a class that blends bicycle agility with moped velocity.

A single‑speed drivetrain keeps maintenance low, while the motor’s sealed construction shrugs off dust and water (rated IP65). Regenerative braking is not included, preserving a natural coasting feel that many riders prefer.

A removable 48 V, 20 Ah lithium‑ion pack tucks neatly into the frame, protected by a locking cover. The pack uses 21700 cells with a battery management system (BMS) that guards against overcharge, over‑discharge, and short circuits. Full charge time is approximately 6 to 8 hours with the included 2 A smart charger.

Real‑world range varies by mode: in pure electric throttle mode, expect 25–35 miles (40–56 km); with moderate pedal assist, range extends to 40–55 miles (64–88 km). Factors like rider weight, wind, tire pressure, and elevation change will influence these numbers. A charge indicator on the battery itself lets you check remaining capacity even when the pack is off the bike.

The oversized 20‑inch wheels wrapped in 4.0‑inch‑wide tires define the bike’s character. The large contact patch dramatically improves grip on loose surfaces — sand, gravel, wet grass, or packed snow — while also providing a degree of natural suspension. Lower tire pressures (recommended 5–30 PSI / 0.34–2.07 bar) let you fine‑tune comfort and traction.

Puncture‑resistant layers and a knobby tread pattern enhance durability and self‑cleaning in mud. The result is a bike that feels planted and confidence‑inspiring whether you’re carving along a forest trail or commuting over potholed city streets.

Front and rear 160 mm hydraulic disc brakes provide strong, linear stopping power. The dual‑piston calipers and metallic pads maintain consistent performance even after prolonged downhill braking. Integrated motor cutoff switches instantly disable power when the brake levers are pulled, adding an extra layer of control in unexpected situations.

Crafted from 6061 aluminum alloy, the frame is both lightweight (bike weight: 79 lbs / 36 kg) and capable of supporting up to 330 lbs (150 kg). The low step‑through design makes mounting easy, while the long padded seat accommodates two riders comfortably. Wide handlebars and a relaxed steering geometry reduce fatigue on long rides.

A centrally mounted LCD screen shows speed, battery level, assist mode, odometer, and trip distance at a glance. The display is readable in direct sunlight and automatically dims at night. Buttons on the left handlebar let you toggle assist levels (0–5), activate walk mode, and control the built‑in headlight and taillight.

A powerful 500‑lumen LED headlight cuts through darkness, while the rear brake light brightens when decelerating. Amber side reflectors and optional turn signals increase visibility from all angles, helping you stay seen in urban traffic.

• Motor 2000 W peak brushless rear hub, 80 Nm (59 lb‑ft) torque
• Battery 48 V 20 Ah lithium‑ion (21700 cells), removable
• Max Speed 25 – 37 mph (40 – 60 km/h)
• Range 35 – 55 miles (56 – 88 km) pedal assist
• Tires 20″ x 4.0″ knobby, puncture‑resistant
• Brakes Hydraulic disc, 160 mm rotors, motor cutoff
• Suspension Front hydraulic fork, 80 mm travel
• Frame 6061 aluminum alloy, step‑through
• Weight 79 lbs (36 kg) including battery
• Load Capacity 330 lbs (150 kg)
• Display LCD backlit, speed/odo/battery/assist
• Lights LED headlight (500 lm), brake‑actuated taillight
• Water Resistance IP65 rated motor & electronics
• Charger 48 V 2 A smart charger, 6 – 8 hrs full charge