Electric City Cargo Bike for Daily Commuting
HKM-5252819 Electric City Cargo Bike
The HKM-5252819 is an electric city cargo bike with a 2000 W rear hub motor (3200 W peak) and a 48 V 20 Ah pack (960 Wh) in a rugged step-through frame. It carries a 400 lb load on a 20 x 4.0 in fat-tire platform, with a front suspension fork, hydraulic disc brakes, and a twist throttle that makes commuting and errands simple and controlled.
2000 W (3200 W Peak) Motor48 V 20 Ah / 960 Wh Pack37 mph Top Speed20 x 4.0 in Fat TiresHydraulic Disc BrakesFront Suspension Fork400 lb (180 kg) LoadRear Cargo Rack
Motor
2000 W
3200 W peak rear hub
Battery
48 V 20 Ah
960 Wh removable lithium
Top Speed
37 mph
60 km/h, throttle only
Range
35-55 mi
56-89 km, varies with load
Tires
20 x 4.0 in
Fat tread, city-stable
Load Capacity
400 lb
180 kg rider, cargo, and passenger
Overview
The HKM-5252819 is a city cargo bike with a step-through frame and a low rear deck that is easy to mount with a load and rated for a combined 400 lb. The upright position gives a clear view of traffic, and the fat tires keep the bike stable when the rack is loaded.
A 2000 W brushless rear hub motor with a 3200 W peak rating handles starts from a stop and shallow hills even when loaded, fed by a 48 V 20 Ah pack that stores 960 Wh. The twist throttle gives immediate acceleration and 5 pedal-assist levels let you add human power to extend range.
Range runs 35-55 mi depending on load and assist. Throttle-only with a full cargo load lands near the low end; moderate pedal-assist on the same route regularly returns the higher figure. A full recharge takes about 6-7 hours on the supplied charger.
A hydraulic front fork smooths broken pavement and a rear coil spring takes the larger hits, while 20 in fat tires add grip on wet or loose ground. Hydraulic disc brakes at both ends provide the stopping power a loaded city bike needs.
Key Features
2000 W Brushless Rear Hub Motor
A 2000 W brushless motor (3200 W peak) is laced into the rear wheel hub, so drive losses stay low and the hub carries cargo weight without extra strain. Peak output pulls away confidently from a stop even when loaded.
48 V 20 Ah Lithium Pack (960 Wh)
The removable pack sits in the frame and lifts out with a key for indoor charging. 960 Wh covers daily errands and commutes; a full recharge from empty takes about 6-7 hours on the supplied 2 A charger.
Front Suspension Fork and Rear Coil Spring
A hydraulic front fork smooths broken pavement and a rear coil spring takes the larger hits under load, keeping the cargo steady and the rider relaxed on mixed city surfaces.
Hydraulic Disc Brakes, Front and Rear
Sealed hydraulic lines actuate both calipers. Lever effort stays light and predictable, and power-off levers cut motor drive the instant either is pulled - important on a 400 lb loaded bike.
7-Speed Drivetrain
A 7-speed derailleur with an index shifter gives usable pedaling cadence from walking pace to cruising speed and helps climb moderate grades without overheating the battery.
20 x 4.0 in All-Terrain Fat Tires
The wide casing spreads rider and cargo weight over a large contact patch for stability under load, and adds grip on gravel, wet pavement, and park paths.
LED Headlight and Integrated Brake Light
A bright LED headlight runs off the main pack and a brake light illuminates whenever either lever is pulled, adding visibility in traffic and at dusk.
Rear Cargo Rack and Front Basket
A long rear rack and a front basket give two secure surfaces for groceries, a backpack, a child seat, or delivery boxes. Combined cargo capacity on the two surfaces is roughly 130 lb.
Full Specifications
Model
HKM-5252819 | Electric City Cargo Bike
Frame Material
Heavy-duty steel alloy cargo frame, step-through geometry
Motor
2000 W brushless rear hub motor, 3200 W peak
System Voltage
48 V DC
Battery
48 V 20 Ah lithium-ion (960 Wh), removable and lockable
Charger
2 A smart charger, 100-240 V input
Charging Time
6-7 hours from empty
Battery Cycle Life
Approximately 800 charge cycles to 80 percent capacity
Top Speed
37 mph (60 km/h)
Range Per Charge
35-55 mi (56-89 km), varies with load, terrain, and assist level
Climbing Grade
Up to approximately 25 degrees with a solo rider
Peak Torque
92 N.m
Drivetrain
7-speed derailleur with index shifter, 52T chainring
Brakes
Hydraulic disc brakes, front and rear, with power-off levers
Suspension
Hydraulic front fork + rear coil spring
Tires
20 x 4.0 in fat tires, all-terrain tread
Wheels
20 in alloy rims, stainless spokes
Saddle
Wide cargo saddle with rear passenger pad
Display
Backlit color LCD: speed, battery level, assist mode, trip distance, odometer
Throttle
Twist-grip throttle with 5 pedal-assist levels and zero assist
Lighting
LED headlight, integrated brake-activated tail-light, powered by main battery
Load Capacity
400 lb (180 kg) rider, cargo, and passenger
Bike Weight
Approximately 96 lb (44 kg) including battery
Recommended Rider Height
5 ft 3 in to 6 ft 4 in (160-193 cm)
Certifications
CE, RoHS; battery cells UN38.3 tested
Battery, Range, and Charging
The 48 V 20 Ah pack stores 960 Wh of energy, enough for daily errands and a commute without a mid-day charge. The removable design lets you keep a spare charged and swap in seconds.
Real-world range depends on load as much as anything. Throttle-only with a full cargo load lands near 35 mi; moderate pedal-assist on the same route regularly returns 50-55 mi. Heavier loads, headwinds, and hills all reduce range.
Tip: Store the pack between 30 and 70 percent charge if the bike will sit for more than a month, and top it up every 4-6 weeks. Charging indoors at room temperature extends usable pack life.
The pack unlocks with the supplied key and lifts out of the frame in a few seconds. Two keys are included; charging in place through the frame-side port works equally well.
Daily Use & Care
- Run tires at 20-25 psi on pavement; drop to 12-15 psi for gravel and dirt.
- Rinse the frame, rims, and drivetrain after riding on salted roads or wet gravel.
- Check axle nuts and stem bolts before the first ride of each week; hub-motor torque and cargo weight work fasteners loose faster than on a conventional bicycle.
- Wipe and re-lubricate the chain every 100-150 mi, or after any ride through standing water or dust.
- Inspect brake pad thickness monthly and replace when under 1 mm.
- Charge indoors at room temperature and unplug once green.
- Keep the display and charge port covers closed when parked outside.
What's in the Box
- 1 x HKM-5252819 electric city cargo bike, approximately 85 percent pre-assembled
- 1 x 48 V 20 Ah removable lithium battery pack
- 1 x 2 A smart charger with 100-240 V input
- 2 x Battery keys
- 1 x Toolkit with hex wrenches and pedal spanner
- 1 x Pair of folding pedals
- 1 x Front basket (pre-installed)
- 1 x User manual and assembly guide
Frequently Asked Questions
How much assembly is required out of the box?+
The bike ships approximately 85 percent assembled. Remaining steps are fitting the front wheel, straightening and bolting the handlebar, installing the pedals and saddle, and checking brake alignment. Budget 30-45 minutes with the supplied tools.
How much cargo can it actually carry?+
The frame is rated for 400 lb total, covering the rider plus approximately 130 lb of cargo across the front basket and rear rack. Keep heavy items low and centered over the rear wheel for stable handling.
What range should I plan for with a load?+
Plan 35-55 mi depending on load and assist. Throttle-only with a full cargo load lands near 35 mi; moderate pedal-assist on mixed terrain regularly returns 50-55 mi. Heavier loads and hills reduce range.
Is a license or registration required?+
Rules vary by state and locality. A 2000 W motor with 37 mph top speed exceeds the limits of the common three-class e-bike framework in many US jurisdictions. Check your state DMV before riding on public roads.
How long does the battery take to charge?+
About 6-7 hours from fully empty with the supplied 2 A charger. Partial top-ups take proportionally less time.
Can I pedal it if the battery runs out?+
Yes. The 7-speed drivetrain works independently of the motor. At approximately 96 lb it is slow going unassisted, but possible on flat ground.
Is the battery removable?+
Yes. It unlocks with the supplied key and lifts out of the frame, or charges in place through the frame-side port.
Will the brakes handle a loaded stop?+
Hydraulic disc brakes front and rear are sized for a 400 lb loaded bike. Bed them in with 10-15 progressive stops during the first few rides; brake earlier than solo when carrying cargo.
Service & Policies
Free Shipping on All Orders
Every order ships free. Handling Time: 0-1 business days (Monday to Friday). Transit Time: 2-5 business days (Monday to Friday). A tracking number is emailed as soon as the parcel leaves our warehouse.
180 Days Purchase Protection
Your purchase is protected for 180 days from the delivery date against manufacturing defects and damage in transit. If something arrives wrong, we make it right.
30 Days Money-Back Guarantee
Not completely satisfied? Request a return within 30 days of delivery for a full refund. We keep the process simple and hassle-free.
24 Months Warranty Service
The product is covered by a 24-month warranty from the delivery date against manufacturing defects. Coverage includes parts and labor; normal-wear items are excluded.
CERoHSUN38.3 Battery960 Wh PackHydraulic BrakesFront Suspension400 lb Load
Why Choose the HKM-5252819
Practical City Cargo
A step-through cargo frame with a long rear deck and front basket turns the HKM-5252819 into a daily errand-runner rather than a recreational toy. Commute, shop, and haul without swapping seats or adding kits.
400 lb Load Rating
The reinforced frame carries a combined 400 lb, enough for an adult rider plus roughly 130 lb across the two cargo surfaces. Keep loads low and centered for stable handling.
Stable When Loaded
20 x 4.0 in fat tires and a low center of gravity keep the bike composed under weight, while the front fork and rear spring smooth the bumps that would otherwise reach the cargo.
Twist or Pedal
Twist the throttle for immediate acceleration, or shift the 7-speed cassette and pedal. Mix both to extend range on longer commutes.
Comfortable Commuter
The upright position, wide saddle, and suspension make stop-and-go city riding relaxed, and the compact footprint is easy to park.
Safe Stopping Power
Hydraulic disc brakes front and rear with power-off levers are the right specification for a 400 lb loaded bike. Bed them in early for consistent, fade-free stops.
Controls & Indicators
Power Button
Located on the battery pack; hold to switch the system on and off
Mode Buttons
Up and down buttons on the display cycle through 5 pedal-assist levels plus zero assist
Twist Throttle
Right-hand grip; proportional response, works independently of pedal-assist level
Speedometer
Live speed readout in mph, switchable to km/h in the settings menu
Battery Gauge
5-segment charge indicator plus percentage readout on the color LCD
Light Switch
Long-press the up button to toggle the LED headlight and integrated brake light
Shifter
Right-hand index shifter for the 7-speed rear derailleur
Pre-Ride Safety Checklist
- Check tire pressure and set it for the load and terrain: 20-25 psi for pavement, 12-15 psi for gravel or dirt.
- Squeeze both brake levers - they should firm well before the grip with no sponginess.
- Confirm the battery is seated and locked and the display shows charge.
- Spin both wheels and check the rims run true and nothing rubs.
- Verify axle nuts and stem bolts are tight, headset has no play with the front brake applied.
- Test the throttle at walking pace in a clear area before riding in traffic or with cargo.
- Switch on the headlight and tail-light near dusk, and wear a helmet rated for these speeds.
- Distribute cargo low and centered over the rear wheel before riding.
Quick Troubleshooting
The motor does not engage when I twist the throttle.+
Confirm the display is on, the battery is locked in place, and both brake levers are fully released - brake cut-off sensors disable the motor while a lever is pulled. Note any error code and contact support.
Range dropped noticeably compared with when it was new.+
First check tire pressure; a soft tire is the most common cause. Cold weather temporarily reduces capacity. If range is down more than 30 percent year-round, the pack may be near end of life.
The brakes feel spongy at the lever.+
Sponginess in a hydraulic system means air in the line or a leak. Stop and have the system bled. Do not ride a loaded bike on compromised brakes.
The chain skips under hard pedaling.+
Derailleur indexing is likely out of adjustment, or the chain and cassette are worn. Adjust the barrel adjuster a quarter turn at a time. Replace the cassette with the chain if wear is advanced.
The front fork rattles over bumps.+
Check the axle is fully seated and the wheel is in the dropouts. If the rattle persists, the fork may need service.
The display shows an error code.+
Power off, wait 30 seconds, switch back on. If it returns, note the exact code and conditions, then contact support.
Certifications & Standards
The HKM-5252819 is produced in a facility operating under an ISO 9001 quality management system. The battery cells and the assembled pack carry the test documentation normally required for lithium-ion transport and sale.
- CE - European Conformity marking covering the electrical assembly.
- RoHS - Restriction of Hazardous Substances compliance for the electronics.
- UN38.3 - Battery transport safety testing, required for lithium-ion shipping by air, sea, and road.
- MSDS - Material Safety Data Sheet available for the battery pack on request.
- ISO 9001 - Quality management system certification held by the manufacturing facility.
Important Safety Notes
This is a high-output electric vehicle capable of 37 mph. Read the manual fully before the first ride and practice throttle control in an open, traffic-free area until the response feels predictable. Carry a passenger only after you are comfortable riding solo at speed.
- Wear a helmet on every ride. At 37 mph a bicycle helmet is the minimum; many riders choose a certified motorcycle or downhill helmet.
- Do not exceed the 400 lb (180 kg) load capacity, which includes the rider, cargo, and any passenger.
- Check local law before riding on public roads or paths. A 2000 W motor with 37 mph top speed may place this vehicle outside standard e-bike classifications in your area.
- Bed in the brake pads with 10-15 progressive stops during the first few rides before riding at full speed or with a full load.
- Do not ride through water deep enough to reach the hub motor or battery compartment.
- Charge only with the supplied charger, indoors, at room temperature, on a non-flammable surface. Do not leave a charging battery unattended overnight.
- Do not attempt to open, puncture, or modify the battery pack. Damaged lithium packs can vent and ignite.
- Reduce speed substantially on gravel, wet surfaces, and downhill grades; fat tires add grip but do not eliminate the risk of losing traction.
HKM-5252819 · 2000 W brushless rear hub (3200 W peak) · 48 V 20 Ah lithium (960 Wh) · 37 mph top speed · 35-55 mi range · 20 x 4.0 in fat tires · 400 lb (180 kg) load capacity · heavy-duty steel cargo frame · front fork + rear coil spring · hydraulic disc brakes · Specifications are provided for reference; actual performance varies with rider weight, terrain, tire pressure, temperature, and riding style. Range figures are measured under moderate use on level ground. This page describes the product only and is not legal advice regarding vehicle classification - confirm local regulations before riding on public roads.
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We understand that maintenance needs may arise. When you purchase from us, you gain access to our unparalleled service ecosystem designed for maximum convenience and reliability.
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For minor repairs or part replacements that can be handled personally, we provide cost-price genuine parts during the warranty period. Each order is accompanied by clear, step-by-step video tutorials to guide you through the self-repair process seamlessly.
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If you purchase products from our website, you have 24 months to request repairs or replacement if any products turns out to be faulty or are not as advertised. During the warranty period if any product is found to have a manufacturer defect, we will repair or replace the defective part(s). If a product cannot be repaired or replaced within a reasonable time, you can request a refund or price reduction. We are confident that our products are of great quality and even better value. However, if upon receiving and inspecting your item you decide that you want to return it, you will have 30 days as of the date of shipment arrival to return it for a refund minus the shipping cost.
