Electric Bicycles >>
HKM-9786451 Electric Bike 750W Motor 48V 15.6Ah Battery 35 Mile Range 27.5-Inch Tires Hydraulic Brakes 7-Speed Suspension Fork
HKM-9786451
750W 27.5-Inch Mountain E-Bike
The HKM-9786451 is a 27.5-inch mountain electric bike built around a 750W rear-hub motor and a 48V 15.6Ah pack that returns 22 to 28 miles on the throttle, or 20 to 35 miles with pedal assist. A Shimano 7-speed drivetrain covers the climbs, hydraulic disc brakes keep stops sharp, and a MOZO suspension fork smooths out the rough stuff. The 6061 aluminum-alloy frame carries up to 265 pounds, and a rear seat carries a passenger. Built for the rider who wants a big-wheeled mountain e-bike with real power.
Key Features
Nine HKM-9786451 details that put big-wheel mountain power through the trail.
750W Rear-Hub Motor
A 750W BLDC rear-hub motor delivers over 100 Nm of torque for strong, confident acceleration.
48V 15.6Ah Battery
The 48V 15.6Ah pack stores 749 watt-hours in a down-tube casing. A management system guards against overdraw.
20-35 Mile Range
The throttle returns 22 to 28 miles, and pedal assist stretches it to 20 to 35 miles. Rider weight and terrain move that number.
27.5x2.35 Tires
27.5-inch by 2.35 KENDA tires roll efficiently on trail and pavement, keeping the contact patch steady.
Hydraulic Disc Brakes
XOD hydraulic disc brakes deliver short, predictable stops with light lever effort.
Shimano 7-Speed
A Shimano 7-speed derailleur with a KMC chain covers the climbs and the flats with clean, reliable shifts.
MOZO Suspension Fork
A MOZO alloy suspension fork soaks up roots, rocks, and broken pavement.
6061 Aluminum-Alloy Frame
The 6061 aluminum-alloy frame keeps the build light yet sturdy for off-road riding.
4-inch Color Display
A 4-inch color display keeps speed, battery, and trip distance legible in real time.
Overview
A big-wheeled mountain e-bike with real power.
The HKM-9786451 is the mountain electric bike built for the trail. A 750W rear-hub motor and a 48V 15.6Ah pack return 22 to 28 miles on the throttle, or 20 to 35 miles with pedal assist. A Shimano 7-speed covers the climbs, hydraulic disc brakes keep stops sharp, and a MOZO suspension fork smooths the rough stuff. The 6061 aluminum-alloy frame carries up to 265 pounds, and a rear seat carries a passenger. This bike is about a big-wheeled mountain e-bike with real power.
Big-Wheel Mountain Power
750W of pull, 27.5x2.35 tires.
The 750W rear-hub motor and 27.5-inch tires make the ride feel planted on trail and pavement alike. The MOZO suspension fork filters out the rough stuff, and the 15.6Ah pack keeps the ride going up to 35 miles with pedal assist.
Full Specifications
Every figure below is shown in US customary units first, with metric units alongside it
Battery and Charging Details
A 749Wh pack for the trail loop.
The 48V 15.6Ah pack stores 749 watt-hours in a down-tube casing and fills in about 4 to 5 hours on the included smart charger. The management system guards against over-current and over-discharge, and cold weather trims capacity until the pack warms. The throttle returns 22 to 28 miles, and pedal assist stretches it to 20 to 35 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 20-35 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 KMC chain clean and lubed so the Shimano 7-speed shifts cleanly. A gritty chain eats range before the pack does.
Check the 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-9786451 arrives partially assembled, first-ride essentials in one carton.
1 x HKM-9786451 Electric Bike
Arrives partially assembled - attach the front wheel, handlebars, and pedals, then torque-check everything and charge first.
1 x Battery
The 48V 15.6Ah pack powers the ride.
1 x Charger
The smart 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-9786451
Nine reasons the 9786451 earns its daily keep.
The Trail Loop, Covered
A 20-35 mile charge covers the trail loop and the daily commute.
Travel for the Rough Line
The MOZO suspension fork soaks up roots and rocks.
Stops That Stay Sharp
XOD hydraulic disc brakes keep stops short and predictable.
Shimano Shifts, Every Time
The Shimano 7-speed covers the climbs and the flats.
Big-Wheel Roll
27.5-inch tires roll efficient and steady on trail and pavement.
Torque for the Steep Stuff
100+ Nm of torque takes steep driveways and soft ground in stride.
Ride Informed
The 4-inch color display keeps speed, battery, and trip distance legible.
Carry a Passenger
The rear seat carries a passenger for the shared ride.
Built for the Trail
The 6061 aluminum-alloy frame shrugs off knocks and scuffs.
Controls & Indicators
Every HKM-9786451 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 Shimano 7 speeds, so the right gear is always one click away.
Pedal Assist
The 1:1 PAS 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 the 4-inch color display.
Frequently Asked Questions
Common HKM-9786451 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?
22-28 miles on the throttle, or 20-35 miles with pedal assist, from the 749Wh pack.
How fast does it go?
A 20 mph top speed - confirm your local rules before riding on public roads.
Does it carry a passenger?
Yes - a rear seat carries a passenger.
Can it ride off-road?
Yes - the 27.5-inch tires, suspension fork, and 750W motor are built for gravel and trails.
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?
Light Green and Light Grey.
Quick Troubleshooting
Common HKM-9786451 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 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-9786451 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.
Pre-Ride Safety Checklist
Thirty seconds of HKM-9786451 checks before every ride.
Check the 27.5x2.35 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-9786451 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-9786451 ride.
This HKM-9786451 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-9786451 - 750W motor - 48V 15.6Ah battery - 20-35 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.
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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.
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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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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.
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Modify orders, track shipments, or speed up delivery.
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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
