Electric Dirt Bikes >>
HKM-7558355 Electric Mountain Bike 750W Motor 48V 13Ah Battery 37 Mile Range 20-Inch Fat Tires 7-Speed Dual Disc Brakes
HKM-7558355
Fat-Tire Electric Mountain Bike
The HKM-7558355 is a 20-inch fat-tire electric mountain bike built around a 750W rear-hub motor and a 48V 13Ah lithium pack that returns 31 to 37 miles on a charge. Four-inch-wide tires grip pavement, gravel, and soft ground alike, front and rear disc brakes with rear E-ABS keep stops controlled, and a 7-speed drivetrain covers the climbs. Dual suspension smooths the rough stuff, and three riding modes - power, assist, and pure cycling - let you pick how much the motor helps. Built for the rider who wants a fat-tire trail bike that still handles the daily commute.
Key Features
Nine HKM-7558355 details that make trail and street feel effortless.
750W Rear-Hub Motor
A 750W brushless rear-hub motor delivers strong, smooth acceleration with 50-60 Nm of torque. The sine-wave controller keeps delivery quiet and the throttle progressive, so takeoffs feel planted rather than jumpy.
48V 13Ah Lithium Battery
The 48V 13Ah pack stores about 624 watt-hours in a down-tube casing. A management system balances the cells and guards against overdraw and over-discharge.
31-37 mi Range
A full charge carries you 31 to 37 miles (about 31 to 37 miles). Rider weight, terrain, assist level, and temperature all move that number, so treat it as a planning point.
20x4.0 Fat Tires
Four-inch-wide tires spread the load for grip on sand, snow, and loose gravel while keeping the ride stable on hard pavement. The wide contact patch stays planted through the rough patches.
Dual Disc + E-ABS
Front and rear disc brakes work with rear E-ABS for short, predictable stops. Aluminum calipers and steel rotors stay sensitive and hold up to repeated braking.
7-Speed Drivetrain
A 7-speed derailleur covers the climbs and the flats, so you always have the right gear. Pair it with pedal assist and the hills stop being an event.
Dual Suspension
Front and rear suspension soak up roots, rocks, and broken pavement, keeping the saddle and the hands comfortable on long or rough rides.
3 Riding Modes
Switch between power mode, pedal-assist mode, and pure cycling mode on the fly. Use full power for the climbs, assist for the commute, and your legs when you want the workout.
Tough Iron Frame
The iron frame shrugs off the scuffs and knocks of off-road riding while staying steady under load, built for the trail rather than babied on the pavement.
Overview
A fat-tire trail bike that still handles the daily commute.
The HKM-7558355 is the fat-tire electric mountain bike built for both worlds. A 750W rear-hub motor and a 48V 13Ah pack return 31 to 37 miles on a charge, while 20x4.0 tires grip pavement, gravel, and soft ground alike. Front and rear disc brakes with rear E-ABS keep stops controlled, a 7-speed drivetrain covers the climbs, and dual suspension smooths the rough stuff. Three riding modes let you trade motor help for leg work, and the tough iron frame carries it all. This bike is about grip, range, and a ride that does not care whether the road is paved or not.
Grip That Does Not Care About the Road
20x4.0 tires, 750W of trail-ready pull.
The 750W rear-hub motor and four-inch tires make the ride feel planted on gravel, sand, and pavement alike. Dual suspension filters out the rough stuff, and the 13Ah pack keeps the ride going for up to 37 mi before you think about the charger.
Full Specifications
Every figure below is shown in US customary units first, with metric units alongside it
Battery and Charging Details
A 624Wh pack filled in about 7 hours.
The 48V 13Ah pack stores about 624 watt-hours in a down-tube casing and fills in roughly 7 hours on the included charger. The management system balances the cells and guards against over-current and over-discharge, and cold weather trims capacity until the pack warms. Real-world range runs 31 to 37 miles depending on rider weight, terrain, assist level, and temperature. Charge soon after a ride rather than parking it warm and empty, and store it at room temperature when the bike will sit.
Daily Use & Care
Ten minutes a month keeps the 31-37 mi range where it belongs.
Wipe the frame, saddle, and wheels with a damp cloth after wet or muddy rides - no pressure washer, ever.
Keep the chain clean and lubed so the 7 speeds shift cleanly. A gritty chain eats range before the pack does.
Check the fat tires weekly and keep them in the recommended pressure range. A soft tire drags and trims range.
Check the disc brake pads monthly; pads wear silently until they are gone.
Charge indoors at room temperature and unplug when the light turns green.
Keep the charge port covered between charges so moisture stays out.
Confirm the battery gauge shows the charge you expect before heading out.
Spin both wheels weekly and check that nothing rubs. A rubbing brake eats into the range.
What’s in the Box
The HKM-7558355 arrives partially assembled, first-ride essentials in one carton.
1 x HKM-7558355 Electric Mountain Bike
Arrives partially assembled - attach the front wheel, handlebars, and pedals, then torque-check everything and charge first.
1 x Removable Battery
The 48V 13Ah pack lifts out to charge indoors.
1 x Charger
Recharges the 48V pack at any standard wall outlet.
1 x User Manual
Safety, setup, and care instructions.
1 x Quick-Start Guide
A one-page setup checklist for the first ride.
1 x Warranty Service Card
24 Months Warranty Service and support contacts.
1 x Assembly Toolkit
Allen keys and wrenches for the front wheel, handlebars, and pedals.
1 x Spare Screws Set
Extra fasteners for fenders and accessories.
1 x Cleaning Cloth
Wipes the frame, saddle, and wheels clean after muddy rides.
1 x Reflectors Kit
Front and rear reflectors for low-visibility rides.
Why Riders Pick the HKM-7558355
Nine reasons the 7558355 earns its daily keep.
Trail and Street in One
The 20x4.0 tires grip the trail and roll the street, so one bike covers the weekend ride and the Monday commute.
A Softer Ride Over Roots
Dual suspension soaks up roots, rocks, and potholes, so longer rides stay easier on the back and the hands.
Stops You Can Trust
Dual disc brakes and rear E-ABS keep stops short and controlled, even loaded or on a descent.
The Right Gear Every Time
A 7-speed drivetrain covers the climbs and the flats, so hills stop being an event.
Ride Your Way
Three modes let you pick full power, pedal assist, or your own legs - the bike adapts to the ride you have in mind.
Range for the Long Loop
A 31-37 mi charge covers the long weekend loop and the whole week of commuting without hunting for an outlet.
Grip That Builds Confidence
Four-inch-wide tires spread the load and hold the line on sand, snow, and loose gravel.
Quiet, Even Pull
The brushless motor runs smooth and quiet, so the pull feels planted instead of jerky.
Built for the Trail
The iron frame shrugs off knocks and scuffs, so the bike is built to be used, not babied.
Three Ways to Ride, One Bike
Power, assist, or your own legs.
Switch between full power, pedal assist, and pure cycling with a tap. Use the motor for the climbs, the assist for the commute, and the 7-speed drivetrain when you want the workout - the 7558355 adapts to the ride you have in mind.
Controls & Indicators
Every HKM-7558355 control explained in a single line.
Throttle
Twist or thumb, the response is progressive and easy to modulate.
Brake Lever
One finger is all the lever asks for; the dual disc brakes do the rest.
Gear Shifter
A thumb shifter covers the 7 speeds, so the right gear is always one click away.
Mode Switch
Toggle between power, assist, and cycling mode on the fly.
Power Button
Long-press to arm the system, short-press to toggle modes.
Display
Speed, battery level, and assist level stay on one screen.
Frequently Asked Questions
Common HKM-7558355 questions, answered briefly.
How much assembly is required?
Partially assembled: attach the front wheel, handlebars, and pedals, then torque-check everything and charge before the first ride.
How far will it go on one charge?
31-37 mi (50-60 km) per charge from the 624Wh pack. Rider weight, terrain, and assist level are the big three variables.
How fast does it go?
A 19-31 mph (19-50 km/h) top speed - confirm your local rules before riding on public roads.
Is the battery removable?
Yes - the 48V 13Ah pack lifts out to charge indoors while the bike stays parked.
What riding modes does it have?
Three - power mode, pedal-assist mode, and pure cycling mode, switchable on the fly.
Can it ride off-road?
Yes - the 20x4.0 fat tires and dual suspension are built for gravel, sand, and soft ground.
What warranty is included?
24 Months Warranty Service, 180 Days Purchase Protection, and 30 Days Money-Back Guarantee.
Is a helmet required?
Yes, every ride - a certified helmet is inexpensive protection.
Quick Troubleshooting
Common HKM-7558355 issues and what to check first.
The motor does not engage.
Confirm the battery is charged and seated, the system is powered on, and all connectors are seated.
Range dropped noticeably.
Check the tire pressure first - a soft fat tire drags and trims range. After that, look to the battery or terrain.
The brakes feel weak.
Check the pad condition; if the lever still reaches the bar, have the brakes serviced.
The gears skip.
Confirm the derailleur is adjusted and the cable is not stretched. A quarter-turn of the barrel adjuster often fixes it.
The display will not power on.
Confirm the pack has charge and is seated, then power cycle to reset.
Certifications & Standards
HKM-7558355 documented and tested for sale and transport.
CE
European Conformity (CE) marking covering the electrical assembly and charger.
EN 15194
European standard for electrically power assisted cycles (EPAC).
UL 2849
Electrical system safety certification for e-bikes.
RoHS
Restriction of Hazardous Substances (RoHS) compliance for the electronics and cells.
UN38.3
Lithium battery transport certification for safe shipping of the pack.
Tested Cells
Each battery batch is cycle-tested before assembly and again before shipping.
Stops You Can Count On
Dual disc brakes and rear E-ABS.
Front and rear disc brakes work with rear E-ABS to keep stops short and controlled, even loaded or on a descent. The fat tires and dual suspension hold the line while the brakes do their job.
Pre-Ride Safety Checklist
Thirty seconds of HKM-7558355 checks before every ride.
Check the 20x4.0 fat tires for pressure, cuts, and embedded debris before each ride.
Keep the motor area clear of mud, string, and debris before you set off.
Tighten handlebar, stem, and axle hardware monthly - vibration loosens fasteners.
Squeeze the brake levers hard while stationary - the bike should not roll.
Wear a helmet every ride and use the lights in low visibility.
Check your local e-bike rules before riding on shared paths or public roads.
Service & Policies
Every HKM-7558355 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 HKM-7558355 ride.
This HKM-7558355 is an electric bike rated per the spec sheet below - ride it where the law allows. Wear a helmet every ride and ride only where the law allows. Read the manual first and practice throttle and braking in an open, traffic-free area. Do not exceed the load limit. Slow down substantially on wet surfaces, gravel, and steep descents - braking distance grows fast. Never open, puncture, or modify the battery. Charge only with the supplied charger, indoors and attended, and unplug when full.
HKM-7558355 - 750W motor - 48V 13Ah battery - 31-37 mi range. Specifications are for reference; actual performance varies with rider, terrain, 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
USPS
Official national carrier with nationwide coverage.
UPS
Fast and reliable ground and express shipping.
FedEx
Express delivery with real-time tracking.
DHL eCommerce
Efficient parcel delivery for e-commerce shipments.
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
Product Guidance
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
