Electric Dirt Bikes >>
HKM-4871379 Electric Bike 2000W Dual Motor 48V 18Ah Battery 37 Mile Range 20-Inch Fat Tires Hydraulic Brakes 7-Speed
HKM-4871379
2000W Dual-Motor MTB E-Bike
The HKM-4871379 is a 20-inch fat-tire electric mountain bike built around dual motors that deliver 2000W of combined pull, with a 48V 18Ah pack that returns 31 to 37 miles on a charge. Four-inch tires grip loose ground, hydraulic disc brakes keep stops sharp, and a 7-speed drivetrain covers the climbs. Dual suspension smooths out the rough stuff, and the aluminum-alloy frame carries the ride. Built for the rider who wants dual-motor power and fat-tire grip in one mountain bike.
Key Features
Nine HKM-4871379 details that put dual-motor power through the trail.
2000W Dual Motor
Dual motors deliver 2000W of combined pull for strong, confident acceleration. The brushless setup keeps the throttle progressive and the delivery smooth.
48V 18Ah Battery
The 48V 18Ah pack stores 864 watt-hours in a down-tube casing. A management system balances the cells and guards against overdraw and over-discharge.
31-37 Mile Range
A full charge carries you 31 to 37 miles. Rider weight, terrain, and assist level all move that number, so treat it as a planning point.
20-inch Fat Tires
Four-inch-wide tires spread the load for grip on loose ground while holding the line on hard pavement. The wide contact patch stays planted.
Hydraulic Disc Brakes
Hydraulic disc brakes deliver short, predictable stops with light lever effort. The sealed system stays consistent as the rotors heat up.
7-Speed Drivetrain
A 7-speed derailleur covers the climbs and the flats, so the right gear is always one click away. Pair it with pedal assist and the hills stop being an event.
Dual Suspension
Dual suspension soaks up roots, rocks, and broken pavement, keeping the saddle and the hands comfortable on rough rides.
70-80 Nm of Torque
The 2000W dual-motor setup delivers 70-80 Nm of torque, so steep climbs and soft ground stop being an event.
LED Headlight
An LED headlight keeps you seen in low light, rounding out the trail-ready kit.
Overview
Dual-motor power and fat-tire grip in one mountain bike.
The HKM-4871379 is the fat-tire electric mountain bike built for the rider who wants real power. Dual motors deliver 2000W of combined pull, and a 48V 18Ah pack returns 31 to 37 miles on a charge. Four-inch tires grip loose ground, hydraulic disc brakes keep stops sharp, and a 7-speed drivetrain covers the climbs. Dual suspension smooths the rough stuff, and the aluminum-alloy frame carries the ride. This bike is about dual-motor power and fat-tire grip in one package.
Dual-Motor Trail Power
2000W of combined pull, 20-inch fat tires.
Dual motors deliver 2000W of combined pull, and the four-inch tires make the ride feel planted on gravel, sand, and pavement alike. Dual suspension filters out the rough stuff, and the 18Ah pack keeps the ride going up to 37 miles.
Full Specifications
Every figure below is shown in US customary units first, with metric units alongside it
Battery and Charging Details
An 864Wh pack for the long loop.
The 48V 18Ah pack stores 864 watt-hours in a down-tube casing and fills 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, and assist level. 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 mile 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 hydraulic 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-4871379 arrives partially assembled, first-ride essentials in one carton.
1 x HKM-4871379 Electric Bike
Arrives partially assembled - attach the front wheel, handlebars, and pedals, then torque-check everything and charge first.
1 x Battery
The 48V 18Ah pack powers the ride.
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-4871379
Nine reasons the 4871379 earns its daily keep.
Dual-Motor Power
Dual motors deliver 2000W of combined pull, so traction stays planted and acceleration stays even.
Travel for the Rough Line
Dual suspension soaks up roots and rocks, so the saddle and the hands stay comfortable.
Stops That Stay Sharp
Hydraulic disc brakes keep stops short and predictable, with light lever effort.
The Right Gear Every Time
A 7-speed drivetrain covers the climbs and the flats, so hills stop being an event.
Grip That Builds Confidence
Four-inch-wide tires spread the load and hold the line on loose ground.
Pull That Feels Planted
The 2000W dual-motor setup delivers 70-80 Nm of torque for strong, even acceleration.
Range for the Long Loop
A 31-37 mile charge covers the long loop and days of commuting.
Seen in Low Light
The LED headlight keeps you visible when the sun drops.
Built for the Trail
The aluminum-alloy frame shrugs off knocks and scuffs, so the bike is built to be used.
Stops That Match the Power
Hydraulic disc brakes and a 7-speed.
Hydraulic disc brakes keep stops short and sharp, while the 7-speed covers the climbs. The 4871379 holds the line wherever the trail points.
Controls & Indicators
Every HKM-4871379 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 hydraulic disc brakes do the rest.
Gear Shifter
A thumb shifter covers the 7 speeds, so the right gear is always one click away.
Pedal Assist
Pedal-assist mode lets you dial in the effort from gentle to full power.
Power Button
Long-press to arm the system, short-press to toggle modes.
Display
Speed, battery level, and assist level stay on one LED screen.
Frequently Asked Questions
Common HKM-4871379 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 miles per charge from the 864Wh pack. Rider weight and terrain are the big variables.
How fast does it go?
A 31 mph (50 km/h) top speed - confirm your local rules before riding on public roads.
Does it have dual motors?
Yes - dual motors deliver 2000W of combined pull.
Can it ride off-road?
Yes - the 20-inch fat tires, dual suspension, and 2000W motor 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.
What colors are available?
Black and Green.
Quick Troubleshooting
Common HKM-4871379 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-4871379 documented and tested for sale and transport.
CE
European Conformity (CE) marking covering the electrical assembly and charger.
UL 2849
Electrical system safety certification for e-bikes.
FCC
Federal Communications Commission (FCC) compliance for the electronics.
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.
Pre-Ride Safety Checklist
Thirty seconds of HKM-4871379 checks before every ride.
Check the 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-4871379 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-4871379 ride.
This HKM-4871379 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-4871379 - 2000W dual motor - 48V 18Ah battery - 31-37 mile 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
