Electric Bicycles >>
HKM-0178771 48V 500W Folding Electric Commuter Bike, 22 mph Top Speed, Dual Disc Brakes, 48 mi PAS Range, 220 lb Load
HKM-0178771
500 W 22 mph Folding Electric Commuter Bike
The HKM-0178771 is built around a low-step folding aluminum frame that collapses in three places: the handlebar stem folds flat against the frame, the main frame hinges at the bottom bracket, and the pedals fold inward. The folded footprint is small enough to roll into an apartment closet, fit beside a desk in a small office, or stow in a car trunk without removing the battery.
Key Features
8 details that make the HKM-0178771 a dependable ride.
500 W Brushless Rear Hub Motor
A 500 W brushless motor sits inside the rear hub, with no chain or belt between the motor and the ground. Drive losses stay low and maintenance is limited to keeping the axle bolts torqued. Peak output is high enough to climb the 30 degree grades the spec sheet rates for, even with a passenger on the rear bench.
48 V Removable Lithium Pack
The pack mounts on the rear rack frame and lifts off with a key for indoor charging. A full recharge from empty takes about 5-6 hours on the supplied charger. The pack is light enough to carry up a flight of stairs to a second-floor apartment without help.
Three-Step Folding Frame
The handlebar stem folds flat, the main frame hinges at the bottom bracket, and the pedals fold inward against the crank. Folded footprint fits in a car trunk, an apartment closet, or under a desk. The hinge points use a clamping design that locks firmly under rider weight and releases with a single quick-release lever per joint.
Dual Mechanical Disc Brakes
160 mm mechanical disc rotors front and rear provide predictable stopping on dry pavement and wet painted lines. Power-off brake levers cut motor drive the instant either lever is pulled, which matters on a bike designed to carry a passenger on the rear bench.
Rear Passenger Bench with Backrest
The wide rear bench saddle and the integrated backrest hold a child or light adult comfortably for neighborhood rides. Integrated rear foot pegs keep a passenger's feet clear of the rear wheel and out of the chain line. The brake-activated tail light sits just below the backrest for visibility from behind.
14 in Pneumatic Street Tires
Pneumatic 14 in tires absorb small bumps and expansion joints with their own compliance, so the bike rides softer than its small wheel size would suggest. Run 35-45 psi for pavement; the lower end of the range adds comfort on brick paths and rough park loops.
LED Headlight and Brake-Activated Tail Light
A bright LED headlight runs off the main pack so there are no separate batteries to keep charged. A brake-activated tail light brightens whenever either lever is pulled, adding visibility from behind at dusk and in traffic.
Three-Step Fold + Car Trunk Friendly
Folded dimensions are small enough to roll into a hatchback trunk without lifting. The folded bike stands upright on its rear rack and side stand, so it does not need a wall to lean against in a small apartment. Combined weight of about 56 lb is manageable for one person to roll, though lifting up stairs is a two-handed job.
Overview
Built for the ride ahead.
The HKM-0178771 is built around a low-step folding aluminum frame that collapses in three places: the handlebar stem folds flat against the frame, the main frame hinges at the bottom bracket, and the pedals fold inward. The folded footprint is small enough to roll into an apartment closet, fit beside a desk in a small office, or stow in a car trunk without removing the battery. Underneath the styling is a 500 W brushless rear hub motor that draws from a 48 V removable lithium pack mounted on the rear rack frame. Power comes on smoothly through a twist throttle on the right grip, and a 3-level pedal-assist system lets the rider add leg power when the goal is to extend range or warm up on the way to work. The 14 in mag-style alloy wheels are shod with pneumatic street tires that roll quietly on pavement and absorb small bumps with their own compliance. Range varies with how the bike is used. On flat pavement at moderate throttle-only speed, plan for around 20 mi from a full charge.
Engineered Around the Details That Matter
The HKM-0178771 is engineered around the details that matter for everyday riding.
Every detail is chosen to make the ride smoother, safer, and more dependable, from the frame geometry to the final finish. The HKM-0178771 pairs a 500 W brushless rear hub motor, geared, 48 V removable lithium pack, key-lock, a range of Up to 48 mi (77 km) pedal-assist; 20 mi (32 km) throttle-only, so it is built for real-world rides rather than showroom specs.
Full Specifications
Measurements are shown in US customary units first, with metric equivalents in parentheses.
Battery, Range, and Charging
Up to 48 mi (77 km) pedal-assist; 20 mi (32 km) throttle-only per charge.
The 48 V removable lithium pack carries enough energy for a week of short commutes between charges. The pack locks onto the rear rack frame with a key and lifts off in a few seconds for indoor charging. A full recharge from empty takes about 5-6 hours on the supplied 2 A charger; partial top-ups take proportionally less. Real-world range depends on three variables more than anything else: how much you pedal, total rider-and-passenger-and-cargo weight, and terrain. Throttle-only riding on flat pavement returns around 20 mi. Moderate pedal-assist on the same terrain regularly returns the rated 48 mi figure. Cold weather below 40 F (4 C) temporarily reduces available capacity by 10-20 percent; it returns once the pack warms up.
Daily Use & Care
A short routine keeps the ride quiet and the range where it should be.
Tire pressure sets the character of the bike. Run 35-45 psi on pavement for lower rolling resistance; drop to 30 psi for brick paths and rough park loops so the tire can flatten and grip the surface.
Rinse the frame, rims, and brake rotors with fresh water after riding on salted roads or wet pavement. Road film attacks aluminum fasteners over time if left in place.
Check that both axle bolts and the stem bolts are torqued before the first ride of each week. Hub-motor torque works fasteners loose faster than on a conventional bicycle.
Wipe and re-lubricate any exposed pivot on the folding hinge every 2-3 weeks. The hinge takes more abuse than a standard frame and benefits from regular attention.
Inspect brake pad thickness monthly. Mechanical pads wear silently until they are gone; replace when the friction material is under 1 mm.
Charge indoors at room temperature. Unplug the charger once the indicator turns green rather than leaving it connected for days.
Keep the display and charge port covers closed when the bike is parked outside so moisture stays out of the connectors.
What’s in the Box
Everything needed to get riding, right out of the box.
1 x HKM-0178771 Folding Electric Commuter Bike
1 x HKM-0178771 folding electric commuter bike
1 x 48 V Removable Lithium Battery Pack
1 x 48 V removable lithium battery pack
1 x 2 A Smart Charger with 100-240 V Input
1 x 2 A smart charger with 100-240 V input
2 x Battery Keys
2 x Battery keys
1 x Toolkit with Hex Wrenches and Pedal Spanner
1 x Toolkit with hex wrenches and pedal spanner
1 x Pair of Folding Pedals
1 x Pair of folding pedals
1 x Rear Passenger Bench with Backrest (pre-installed)
1 x Rear passenger bench with backrest (pre-installed)
1 x User Manual and Assembly Guide
1 x User manual and assembly guide
Why Choose the HKM-0178771
6 reasons it earns its place.
Family-Friendly in A Folding Package
A rear passenger bench with backrest, integrated foot pegs, and a brake-activated tail light turn this bike into a practical family tool rather than a recreational toy. You can drop a child at the park, run a grocery errand, and commute to work on the same bike.
Folds Down for Apartment and Transit Use
Three-step folding geometry collapses the bike to a footprint small enough for a closet, a car trunk, or under a desk. The folded bike stands upright on its rear rack, so it does not need a wall to lean against in a small apartment or office.
Twist Throttle Plus Pedal Assist
Twist the throttle for immediate electric acceleration, or use the 3 pedal-assist levels to add human power when you want to extend the range. Most owners mix both - throttle to get moving from a stop, pedals for the cruise.
Direct-Drive Rear Hub Simplicity
The motor lives in the rear hub with no mid-drive gearbox, belt, or extra chain to service. Fewer moving parts in the drive path means less to maintain and a notably quiet ride.
Low-Step Frame for Shorter Riders
The dropped top tube and 14 in wheel size keep standover height low so most riders can put both feet down at a stop. Combined with the recommended height range of 5 ft 0 in to 6 ft 2 in, the bike fits a wide range of rider sizes.
Built for Daily Use
Sealed electrical connectors, a covered and lockable battery compartment, and mechanical disc brakes that work in wet weather all make sense for a bike that gets ridden to school drop-off and parked outside.
Every Component Chosen for Real-World Use
Every component of the HKM-0178771 is chosen for real-world use.
It is built to be ridden regularly, cleaned easily, and kept in top condition with routine care. The HKM-0178771 pairs a 500 W brushless rear hub motor, geared, 48 V removable lithium pack, key-lock, a range of Up to 48 mi (77 km) pedal-assist; 20 mi (32 km) throttle-only, so it is built for real-world rides rather than showroom specs.
Controls & Indicators
What each control on the HKM-0178771 does.
Power Button
Located on the battery pack; hold to switch the system on and off
Assist Buttons
Up and down buttons on the display cycle through 3 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 LCD
Light Switch
Long-press the up button to toggle the LED headlight
Folding Release
Quick-release levers at the handlebar stem and main frame hinge
Frequently Asked Questions
Quick answers about the HKM-0178771.
How much assembly is required out of the box?
The bike ships approximately 90 percent assembled. Remaining steps are straightening and bolting the handlebar, installing the pedals, fitting the seat post and saddle, mounting the front basket hardware, and checking brake alignment. Budget 20-30 minutes with the supplied tools.
Can two people really ride this bike together?
Yes, within the 220 lb total load rating. The rear bench and backrest are sized for a child or light adult passenger; integrated foot pegs keep their feet clear of the rear wheel. Real-world range with two riders drops by 30-40 percent compared with a solo rider, so plan shorter rides or carry the charger on day trips.
What is the actual range I should plan for?
Plan for 20 mi on throttle-only riding at moderate speed on flat pavement. Moderate pedal-assist on the same terrain regularly returns the rated 48 mi figure. Heavier riders, headwinds, hills, two riders, and low tire pressure all reduce range.
Is a license or registration required?
Rules vary by state and locality. A 500 W nominal motor with 22 mph top speed sits within the common three-class e-bike framework in most US jurisdictions. Check your state DMV and local ordinances before riding on public roads or bike paths.
How long does the battery take to charge?
About 5-6 hours from fully empty with the supplied 2 A charger. Partial top-ups take proportionally less time; there is no need to run the pack down before recharging.
Can I pedal it if the battery runs out?
Yes. The drivetrain works independently of the motor. The bike is light for an e-bike at approximately 56 lb, so pedaling home unassisted is reasonable on flat ground, though the 14 in wheels mean you will not be setting any speed records.
Will the brakes handle the speed and the passenger?
Dual mechanical disc brakes with 160 mm rotors are the appropriate specification for a 22 mph bike of this weight. Bed the pads in during the first few rides with 10-15 progressive stops from moderate speed to build the friction layer on the rotors. With a passenger on the rear bench, brake earlier than you would solo.
Is the battery removable for indoor charging?
Yes. It unlocks with the supplied key and lifts off the rear rack frame. You can also charge it in place through the frame-side charge port.
Quick Troubleshooting
Common issues and what to check first.
The motor does not engage when I twist the throttle.
Confirm the display is on and shows charge, the battery is locked into place, and both brake levers are fully released - brake cut-off sensors disable the motor while a lever is pulled. If the display shows an error code, note it and contact support.
Range dropped noticeably compared with when it was new.
First check tire pressure; a soft tire on pavement is the most common cause. Then consider temperature - cold reduces available capacity temporarily. If range is down more than 30 percent year-round after many charge cycles, the pack may be approaching the end of its service life.
The brakes feel weak or noisy.
Mechanical disc brakes need pad bedding-in after new pads, and the rotor needs to be clean and free of oil. Lightly sand the rotor surface with fine sandpaper, clean with isopropyl alcohol, and bed the pads in with 10-15 progressive stops from moderate speed.
The folding hinge creaks or feels loose.
Stop riding and inspect the hinge clamp. The quick-release lever should be fully closed and tight; if the hinge still moves under rider weight, the clamp bolt inside the lever needs to be tensioned. A drop of light oil on the pivot prevents creaks.
The chain skips under hard pedaling.
This bike uses a single-speed drivetrain, so chain skipping usually means the chain is worn or the tensioner is out of adjustment. Inspect the chain for stretch and replace if any link binds. Confirm the rear wheel is seated fully forward in the dropouts.
The display shows an error code and the bike will not move.
Power the system off, wait 30 seconds, and switch it back on. If the code returns, note the exact code and the conditions that produced it, then contact support - error codes map to specific faults in the controller, motor, or throttle circuits.
Certifications & Standards
Documented and tested for sale.
CE
European Conformity (CE) marking where applicable for the safety and electrical assembly.
ISO 9001
Quality management system held by the manufacturing facility.
Compliance Docs
Safety and compliance documentation included with every unit on request.
Tested
Each unit is inspected and function-tested before it leaves the warehouse.
Pre-Ride Safety Checklist
Run through these before every ride.
Check tire pressure and set it for the terrain you plan to ride: 35-45 psi for pavement, 30 psi for brick paths or rough park loops.
Squeeze both brake levers. They should firm up well before reaching the grip, with no rubbing that would indicate a misaligned caliper.
Confirm the battery is seated and locked, and that the display shows the expected state of charge.
Spin both wheels and check that the rims run true and nothing rubs the brake pads or the frame.
Verify the folding hinge quick-releases are tight and the handlebar stem is locked straight before riding.
Test the throttle at walking pace in a clear area before riding in traffic or with a passenger on the rear bench.
Switch on the headlight if you will be riding near dusk, and wear a helmet rated for the speeds this bike reaches.
If carrying a passenger, confirm both rear foot pegs are deployed before they mount the rear bench.
Service & Policies
Every HKM-0178771 is backed by coverage designed to protect your investment.
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.
Important Safety Notes
Read before the first ride.
This 500 W bike is rated at 22 mph. Read the manual first and practise throttle and braking in an open, traffic-free area. Leave extra room for braking, since stopping distance grows fast with speed and load. Wear a helmet every ride. Do not exceed the 220 lb (100 kg) load limit, including rider, cargo, and rack load. Confirm local law before riding on public roads. Bed the brakes in with 10-15 progressive stops over the first rides. Never ride through water deep enough to reach the motor or battery. Charge only with the supplied charger, indoors and attended. Never open, puncture, or modify the pack. Slow down substantially on gravel, wet surfaces, and steep descents.
HKM-0178771 - Folding Electric Commuter Bike. Specifications are for reference; actual performance varies with rider, terrain, tire pressure, and temperature. This page describes the product only and is not legal advice regarding vehicle classification - confirm local regulations before riding on public roads.
Every product we offer includes a 180-day purchase protection plan at no additional cost. This coverage extends beyond a standard warranty, reflecting our confidence in product quality and our ongoing commitment to your satisfaction.
The protection plan is designed to provide practical help in real-world situations. Whether you encounter a manufacturing issue, a performance problem, or an unexpected accident, our team is ready to assist with clear, fair solutions.
What Is Covered
Manufacturing Defects
We replace items with material or workmanship flaws at no charge.
Performance Failures
Free repair or replacement if the product fails under normal use.
Accidental Damage
One-time courtesy replacement at a reduced price.
Zero Hidden Fees
All shipping costs for replacements and returns are covered.
How to File a Claim
How This Differs from the Warranty
The 180-day purchase protection includes accidental damage and performance failures that are typically not covered by a standard warranty. It provides an additional layer of support during the first six months after purchase, giving you greater confidence and peace of mind.
We want you to be completely satisfied with your purchase. If for any reason you are not fully happy, you may return your item within 30 days of delivery for a full refund. No lengthy forms, no unnecessary questions.
Our return policy is built on a simple principle: if the product is not right for you, we will make it right. We understand that online shopping involves trust, and we work hard to earn that trust with every order.
Return Eligibility
30-Day Window
Request a return within 30 days of delivery.
Original Condition
Unworn or unused, with tags and original packaging.
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A receipt or order number is required.
Fast Refund
Refund processed within 10 business days.
How to Start a Return
Returns & Exchanges Overview
Damages & Exchanges
Please inspect your order as soon as it arrives. If the item is defective, damaged, or incorrect, contact us immediately so we can evaluate the issue and make it right. For exchanges, the fastest option is to return the original item and place a new order for the replacement.
We believe in the quality of our products, and we want you to share that confidence. Every product is backed by a 24-month warranty covering all structural and functional components, including zippers, buckles, straps, and fabric integrity.
The warranty is designed to be simple and accessible. You only need your proof of purchase to begin a claim, and our team will assess the issue promptly. If a manufacturing issue arises, we will make it right.
What the Warranty Covers
Comprehensive Coverage
Every part warranted for two full years.
Free Repair or Replacement
Whichever is faster, at no cost to you.
Quick Turnaround
Claims assessed within 1 business day.
Transferable
Warranty follows the product, not the owner.
How to File a Warranty Claim
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Delivery Time Summary
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Start claims or returns quickly and easily.
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Step-by-step solutions for product issues.
Contact Information
24/7 Phone
+1 (209) 280-3200
support@hekomart.com
Address
3401 Dale Rd, Modesto, CA 95356
Support Hours
Available 24 hours a day, 7 days a week
