E-Bike >>
HKM-7418579 Moped Style Fat Tire Electric Bike, 750W Motor, 48V 13Ah Battery, 20 x 4 in Tires, 24.9 mph, 7 Speed
HKM-7418579
High-Speed Moped-Style Fat Bike
The HKM-7418579 is the quick one: a 750 W motor on 48 V 13 Ah (624 Wh) pushing to 24.9 mph (40 km/h) with 37 mi (60 km) of range. A double-shoulder hydraulic front fork and 20 x 4 in fat tires keep it planted, the rear 7-speed derailleur keeps you pedaling, and the high-carbon steel frame carries it all at a honest 90 lb (41 kg) without the battery. Six colors.
Key Features
Eight details that make the HKM-7418579 a dependable daily ride.
750W Rear Hub Motor
The brushless hub motor pushes the HKM-7418579 to 24.9 mph (40 km/h) - this is the fastest bike in the family, built for riders who want the top of the dial.
37 mi Per Charge
The 48 V 13 Ah pack (624 Wh) returns up to 37 mi (60 km) per charge - real distance between plug-ins, on the bike's own timetable.
Double-Shoulder Hydraulic Fork
A beefy dual-crown hydraulic front fork soaks up the hits that would shake a rigid bike loose - built for the rough side of town and the trail past it.
20 x 4 in Fat Tires
Wide casings put a serious contact patch down on sand, gravel, and wet pavement, keeping the speed honest and the ride composed.
Rear 7-Speed Derailleur
The 7-speed derailleur keeps your legs in the game - pedal assist on the flats, real gearing on the climbs, and a home for your feet when the pack runs low.
Disc Brakes
Disc brakes front and rear rein in 24.9 mph with the modulation you want when it matters.
High-Carbon Steel Frame
The steel frame trades a few pounds for durability you can feel - a stable, planted platform rated at 90 lb (41 kg) without the battery.
Six Colors at Launch
Blue, White, Black, Red, Yellow, or Green - the widest palette in the family, on the fastest bike in it.
Overview
The top of the dial, the long way around.
The HKM-7418579 is the speed-first member of the family: a 750 W motor and a 48 V 13 Ah pack (624 Wh) pushing to 24.9 mph (40 km/h) with up to 37 mi (60 km) per charge. The double-shoulder hydraulic front fork and 20 x 4 in fat tires keep that speed planted on rough ground, the rear 7-speed derailleur keeps you pedaling, and disc brakes bring it all down in a hurry. Six colors, one character: fast.
Planted at the Top of the Dial
Speed, held steady.
Speed is only useful when the bike stays composed - and the HKM-7418579 was built around that idea. The hydraulic fork and four-inch tires hold their line so the top of the dial feels like a place to live, not to visit.
Why Choose the HKM-7418579
Eight reasons it earns its place by the door.
The Quick One
24.9 mph (40 km/h) puts the HKM-7418579 in different company: trips that were car trips become rides, and the route map doubles in size.
No Fuel, No Fees
A full 624 Wh charge costs a few cents and covers up to 37 mi. No gas, no oil, no parking - the fastest and cheapest door-to-door machine you will own.
Torque on Tap
50-60 N.m of hub-motor torque moves the 90 lb frame from a standstill without ceremony, and holds speed on grades that thin out lesser bikes.
Built for Daily Abuse
The high-carbon steel frame and double-shoulder fork are over-built on purpose - this is the bike you lend out and the bike that comes back fine.
Four Inches of Insurance
At 24.9 mph, grip is the feature. The 20 x 4 in casings put enough rubber down that wet paint and gravel patches become texture instead of events.
Six Honest Colors
Blue, White, Black, Red, Yellow, Green - pick the one that makes you want to ride. The hardware underneath is identical and identical-fast.
Ready Out of the Box
The HKM-7418579 arrives mostly assembled. Fit the handlebar, charge the pack, and the first ride is minutes away.
Pedal When You Want
The rear 7-speed derailleur makes it a real bicycle when the pack is low or the legs want the work - a rare thing on a bike this fast.
Full Specifications
Measurements are shown in US customary units first, with metric equivalents in parentheses.
Battery, Range, and Charging
624 Wh behind 24.9 mph.
The 48 V 13 Ah pack stores 624 Wh and returns up to 37 mi (60 km) per charge - at 24.9 mph, that is a hour and a half of full-throttle riding between plug-ins. Real-world range depends on rider weight, speed, terrain, and tire pressure; full-throttle starts and hills pull it down fastest. A full recharge takes 3+ hours, quick enough that a lunch stop resets the day. Cold below 40 F trims capacity 10-20 percent, recovering as the pack warms.
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 loose ground so the four-inch casings can grip. At 24.9 mph, pressure matters twice as much.
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-7418579 Moped-Style Electric 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 3+ hours from a standard outlet
1 x User Manual
Safety, setup, and care instructions
Controls & Indicators
What each control on the HKM-7418579 does.
Power Button
Hold to switch the system on and off; the display confirms the power state
Throttle
Twist throttle for the full 24.9 mph on demand
Display
Speed, battery, and assist data in real time on the handlebar readout
Assist Levels
Cycle through the assist levels to match road, terrain, and range
Battery Gauge
State-of-charge readout so you always know the ride you have left
Brake Levers
Disc brakes, one lever per hand - at this speed, check them every ride
Gear Shifter
7-speed thumb shifter for pedaling efficiency and climb control
Frequently Asked Questions
Quick answers about the HKM-7418579.
How fast does it actually go?
24.9 mph (40 km/h) under throttle on flat ground with a charged pack. Hills, cold, and low charge reduce the top speed accordingly.
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?
Up to 37 mi (60 km) with mixed pedaling. Continuous full-throttle riding at 24.9 mph cuts that figure substantially; gentle throttle and pedaling stretch it back out.
At 24.9 mph, is a license or registration required?
This is the critical question for this bike: many US jurisdictions legally cap e-bike assist near 20 mph, and above that some states classify the machine differently, with licensing or registration. Confirm your local law before riding on public roads.
How long does the battery take to charge?
3+ hours with the supplied charger from a fully empty pack - fast enough for a meaningful lunch-break top-up.
Can I pedal it like a normal bike?
Yes. The rear 7-speed derailleur works exactly like a conventional bike's, though at 90 lb (41 kg) without the battery it rides best with some assist.
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.
Why a steel frame?
High-carbon steel absorbs road buzz, survives hard use, and holds alignment - at 90 lb (41 kg) without the battery, the material choice favors durability over scale weight.
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.
750W / 24.9 mph
Top-of-family speed from the 48 V 750 W rear hub motor.
624 Wh Pack
48 V 13 Ah lithium pack with 3+ hour recharging.
Double-Shoulder Fork
Dual-crown steel hydraulic front fork, built for rough duty.
High-Carbon Steel Frame
Durable, alignment-stable frame rated at 90 lb (41 kg) without battery.
7-Speed Derailleur
Rear 7-speed drivetrain for genuine pedaling capability.
Six-Color Program
Blue, White, Black, Red, Yellow, and Green 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-7418579 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 bike reaches 24.9 mph (40 km/h) - a speed that demands respect and, in many jurisdictions, changes how the machine is classified. Read the manual first and practise throttle and braking in an open, traffic-free area. At this speed, stopping distance grows fast: check both disc brakes before every ride and leave generous following distance. Wear a helmet every ride; a full-face or moto-rated helmet is worth considering at this pace. Confirm your local law before riding on public roads, including licensing and where this machine may legally be ridden. 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, loose gravel, and steep descents.
HKM-7418579 - 48 V 750 W rear hub motor - 48 V 13 Ah lithium-ion (624 Wh) - 24.9 mph (40 km/h) top speed - up to 37 mi (60 km) range - 20 x 4 in fat tires - double-shoulder hydraulic front fork - disc brakes - rear 7-speed derailleur - high-carbon steel frame - about 90 lb (41 kg) without battery. 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
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Delivery Process
Delivery Time Summary
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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
