E-Bike >>
HKM-7779027 Electric Fat Tire Bike for City Commuting, 250W Motor, 48V 15.6Ah Battery, 20 x 4 in Tires, 7 Speed
HKM-7779027
Retro City Fat Tire E-Bike
The HKM-7779027 is a city commuter built around a 250 W rear hub motor and a 48 V 15.6 Ah pack that returns 25-37 mi (40-60 km) per charge. Twenty-inch fat tires with front and rear suspension smooth broken pavement, dual disc brakes bring it down evenly, and the LCD readout, headlight, and front basket make it a complete daily machine - in four colors that actually look like something.
Key Features
Eight details that make the HKM-7779027 a dependable daily ride.
250W Rear Hub Motor
The brushless hub motor drives directly, capped at the street-legal 15.5 mph (25 km/h), with 60-70 N.m of torque for city grades. No chain-driven mid-drive complexity to service.
48V 15.6Ah Lithium Pack
The down-tube pack returns 25-37 mi (40-60 km) per charge and recharges in 5-8 hours overnight - a week of commutes on one bar.
20 x 4 in Fat Tires
Wide tires soak up broken blocks, curb cuts, and cobblestones that would jar a narrow city tire, with grip that holds in the wet.
Front & Rear Suspension
Suspension at both ends takes the edge off rough streets, so the ride arrives calm instead of rattled.
Dual Disc Brakes
Disc brakes at both wheels give even, predictable stopping in traffic - no fade, no guesswork.
LCD Display
The handlebar readout shows speed, battery, and assist data at a glance, so you always know the ride you have left.
Headlight and Basket
A front headlight runs from the main pack for the ride home after dark, and the front basket carries the groceries without a backpack.
Four Grown-Up Colors
Black, Dark Grey, Grey White, or Brown - finishes chosen to look right locked outside a café, not just in a spec sheet.
Overview
Built for the daily loop.
The HKM-7779027 is a fat-tire city commuter built for the ride that happens every day. A 250 W hub motor and a 48 V 15.6 Ah pack return 25-37 mi (40-60 km) per charge, while 20 x 4 in tires with front and rear suspension keep broken pavement from reaching your hands. Dual disc brakes, an LCD display, a headlight, and a front basket come standard, and the whole bike finishes in four colors with genuine presence.
The Ride You Look Forward To
The commute, upgraded.
Wide tires, calm suspension, and a motor that pulls the moment you ask: the HKM-7779027 turns the ride to work into the best part of the day. It is the bike you reach for on the clear mornings - and the rainy ones.
Why Choose the HKM-7779027
Eight reasons it earns its place by the door.
Efficient by Design
A 250 W motor paired with a 15.6 Ah pack favours efficiency over bulk. The HKM-7779027 covers the week's riding on one charge, and a full recharge costs a few cents.
Compact 20-Inch Format
Twenty-inch wheels keep the footprint short and the handling quick - easy to store in a hallway, carry up steps, or load in a small car.
No Fuel, No Fees
A full charge costs a few cents and covers up to 37 mi. There is no gas, no oil, and no parking meter at the far end of the ride.
Low-Maintenance Drive
The brushless motor sits in the rear hub, so there is no chain-driven motor unit to service. The drive stays quiet even at full assist.
Everyday Practicality
Dual disc brakes, dual suspension, a headlight, a basket, and an LCD display make this a transport tool, not a toy. The HKM-7779027 carries all of it as standard.
Fat Tire Confidence
Four-inch tires hold their line on wet paint, cobbles, and gravel washouts. The bike goes where you point it, in weather that parks narrower bikes at home.
Ready Out of the Box
The HKM-7779027 arrives mostly assembled. Fit the handlebar, charge the pack, and the first ride is minutes away - no shop visit, no special tools.
Pedal or Throttle
Ride it like a bicycle with the 7-speed drivetrain, lean on the throttle, or mix both. The bike adapts to the day instead of the other way around.
Pick a Finish, Not a Compromise
Four colors, zero filler.
Black, Dark Grey, Grey White, or Brown - each finish on the HKM-7779027 was picked to age well under city light. The lines stay clean because nothing on this bike is there for show alone.
Full Specifications
Measurements are shown in US customary units first, with metric equivalents in parentheses.
Battery, Range, and Charging
A week of commutes per charge.
The 48 V 15.6 Ah pack returns 25-37 mi (40-60 km) per charge - for most commuters, that is the whole week on one bar. Real-world range depends on rider weight, assist level, terrain, and tire pressure. Cold below 40 F trims capacity 10-20 percent, recovering as the pack warms. A full charge takes 5-8 hours, so plug in after dinner and the bike is ready each morning.
Daily Use & Care
A short weekly routine keeps the ride quiet and the range where it should be.
Tire pressure sets the character of the ride. Run the upper half of the sidewall range on pavement for lower rolling resistance and longer range, and drop toward the lower half on rough blocks so the 20 x 4 in casings can grip.
Wipe the frame and deck with a damp cloth after riding on salted roads or dusty paths. Road film attacks aluminum fasteners over time if it is left in place.
Check the axle hardware, stem clamp, and handlebar bolts before the first ride of each week. Vibration works fasteners loose faster than most riders expect.
Keep the chain lubed and the derailleur clean. A dry chain wears the cassette fast and robs range you paid for.
Inspect disc brake pad thickness monthly. Pads wear silently until they are gone; replace the friction material once it is under 1 mm.
Charge indoors at room temperature and unplug once the charge is complete rather than leaving the bike connected for days at a time.
Keep the charge-port cover closed when the bike is parked outside so moisture stays out of the connector.
Spin both wheels weekly and check that nothing rubs and that the tires seat evenly. Catching a wobble early is a five-minute fix instead of a wheel replacement.
What’s in the Box
Everything needed to get riding, right out of the box.
1 x HKM-7779027 Electric Fat Tire Bike
Arrives mostly assembled; fit the handlebar, straighten the front wheel, and check the brakes
1 x 48 V Charger
Recharges a full pack in 5-8 hours from a standard outlet
1 x User Manual
Safety, setup, and care instructions
Controls & Indicators
What each control on the HKM-7779027 does.
Power Button
Hold to switch the system on and off; the display confirms the power state
LCD Display
Speed, battery, and assist data shown in real time on the handlebar
Throttle
Throttle power on demand, no pedaling required
Assist Levels
Cycle through the assist levels to match traffic, terrain, and range
Battery Gauge
State-of-charge readout so you always know the ride you have left
Brake Levers
Dual disc brakes, one lever per hand, firm from the first pull
Lighting
Switch the headlight on from the controls for dusk and evening rides
Frequently Asked Questions
Quick answers about the HKM-7779027.
How much assembly is required out of the box?
The bike arrives mostly assembled. What remains is fitting the handlebar, straightening the front wheel, checking tire pressure and brake alignment, and giving the pack a full charge. Budget 30-45 minutes, most of it waiting for the charger.
What range should I actually plan for?
Plan for 25-37 mi (40-60 km) per charge. Hills, cold weather, heavier loads, and low tire pressure all pull the figure down; firm tires and a gentle throttle push it back up.
How long does the battery take to charge?
About 5-8 hours with the supplied charger from a fully empty pack - an overnight habit that has the bike ready every morning.
Is a 250W motor enough for city riding?
For typical city grades and daily commuting, yes. The 60-70 N.m of torque handles starts and climbs, and the fat tires keep rolling through the rough patches.
Is a license or registration required?
Rules vary by state and by city. Many US jurisdictions treat e-bikes like bicycles when assist caps near 20 mph, but some require permits or restrict where they may be ridden. Confirm local law before riding on public roads.
Can I ride it like a normal bike?
Yes. The 7-speed drivetrain pedals exactly like a conventional bike, with the motor adding assist or throttle power whenever you ask.
Is it waterproof?
The build is water-resistant for everyday splashes and damp pavement, but it is not a submarine. Avoid deep puddles, do not pressure-wash it, and dry the charge port before plugging in.
What do I carry in the basket?
Whatever the day needs - groceries, a bag, a lock. The basket mounts over the front wheel so the weight steers with the handlebar instead of swinging the rear.
Quick Troubleshooting
Common issues and what to check first.
The motor does not engage.
Confirm the power button is on, the pack has charge, and the display is showing data. Check that the battery is clicked fully into place. If it still will not engage, note the conditions and contact support.
Range dropped noticeably compared with when it was new.
Check tire pressure first; a soft tire on pavement is the most common cause. Then consider temperature, because cold reduces available capacity temporarily. Frequent full-throttle starts and hill climbing also pull range down.
The brakes feel weak or the lever pulls to the grip.
Check the pad thickness and cable tension first. Disc brakes bed in over the first rides; if the lever still feels soft after bedding in, adjust the cable or have the caliper checked - do not continue with compromised brakes.
The chain skips under hard pedaling.
Check the derailleur indexing and the chain for wear. A stretched chain skips under load; replacing it in time protects the cassette.
There is a rattle from the front end over bumps.
Check that the axle hardware is tight and the front wheel is seated. Suspension components settle in the first weeks; a persistent knock after a hardware check should be inspected before the ride continues.
The display will not power on.
Confirm the pack has charge and all connectors are seated. Switch the system off, wait 30 seconds, and switch it back on. If the display stays dark, note the conditions and contact support.
Certifications & Standards
Documented design and build, ready for daily service.
48V 15.6Ah Pack
Down-tube lithium pack sized for a full week of city riding.
Dual Suspension Standard
Front and rear suspension fitted as standard, tuned for broken streets.
Dual Disc Standard
Front and rear disc brakes fitted as standard equipment.
Fat Tire Standard
20 x 4 in tires fitted as standard, ready for rough blocks.
LCD Instrumentation
Speed, battery, and assist readouts standard on the handlebar.
Four-Color Program
Black, Dark Grey, Grey White, and Brown finishes at launch.
Pre-Ride Safety Checklist
Run through these before every ride.
Check tire pressure and set it for the surface you plan to ride; pressure has more effect on range and grip than any other single adjustment you can make in 30 seconds.
Squeeze both brake levers. They should firm up well before touching the grip, with no sponginess or long lever travel.
Confirm the pack has the charge you expect and the display shows it.
Spin both wheels and check that nothing rubs and the tires seat evenly.
Check that the axle hardware is tight and that there is no play at the handlebar or folding joint when you rock the bike with the front brake applied.
Test the throttle and pedal-assist response at walking pace in a clear, traffic-free area before riding in traffic.
Switch on the headlight if you will be riding near dusk, and wear a helmet rated for the speed this machine reaches.
Confirm the assist level is the one you expect before you set off, so the first throttle input is not a surprise.
Service & Policies
Every HKM-7779027 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 e-bike is capped at 15.5 mph (25 km/h) in its street-legal setting. Read the manual first and practise throttle and braking in an open, traffic-free area. Leave extra room for braking, since fat tires carry real momentum. Wear a helmet every ride. Do not exceed the 265 lb (120 kg) load limit, including rider and cargo. 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 battery or motor. Charge only with the supplied charger, indoors and attended. Never open, puncture, or modify the pack. Slow down substantially on wet surfaces and steep descents.
HKM-7779027 - 250 W brushless rear hub motor - 48 V 15.6 Ah lithium-ion - 15.5 mph (25 km/h) - 25-37 mi (40-60 km) range - 20 x 4 in fat tires - front and rear suspension - dual disc brakes - 7-speed drivetrain - steel frame - LCD display, headlight, and basket standard. 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.
Proof of Purchase
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
Every order ships free—no minimums, no hidden fees. We currently deliver across the United States and are actively working to expand to more countries. We partner with reliable U.S. courier services to ensure your order arrives safely and on time.
Our delivery process is designed for transparency. From the moment you place your order to the moment it reaches your door, you receive clear updates at every stage. We carefully inspect each product before dispatch, and we provide tracking information as soon as your order ships.
Our U.S. Shipping Partners
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Delivery Process
Delivery Time Summary
Cancellations & Taxes
You may cancel your order at any time before it ships. All product prices include applicable taxes, and there are no additional VAT or customs fees for orders delivered within the United States.
Whether you have a question, need help with an order, or just want some advice, our support team is available around the clock. We don't just respond to messages—we work with you to find real solutions that fit your needs.
Our support specialists are trained to handle a wide range of requests, from product recommendations to technical troubleshooting. No matter the question, you can expect a professional and friendly response.
How We Can Help
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Our experts help you choose the right product.
Order Assistance
Modify orders, track shipments, or speed up delivery.
Warranty & Returns
Start claims or returns quickly and easily.
Technical Troubleshooting
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
