Electric Bicycles >>
HKM-9359571 1500W Electric Fat Tire Bike, 48V 18Ah Battery (864Wh), 30 mph Top Speed, 7-Speed Shimano Drivetrain
HKM-9359571
1500 W 30 mph Electric Fat Tire Bike
The HKM-9359571 is built around a full-suspension frame with a moped-style bench seat and an under-seat battery compartment. The 1500 W peak motor (750 W nominal) delivers strong acceleration from stops and confident hill-climbing up to 20 degrees with a solo rider.
Key Features
8 details that make the HKM-9359571 a dependable ride.
1500 W Peak Brushless Rear Hub Motor
A 750 W nominal motor with a 1500 W peak rating is laced into the rear wheel hub. No chain connects the motor to the ground, so drive losses stay low. Peak output handles a 20 degree slope with confidence and pulls away briskly from traffic lights.
48 V 18 Ah Lithium Pack (864 Wh)
The removable pack stores 864 Wh of energy -- among the largest packs in its class. It lifts out from under the seat with a key for indoor charging. A full recharge takes about 6-7 hours on the supplied 2 A charger.
Hydraulic Disc Brakes Front and Rear
Sealed hydraulic lines actuate both calipers. Lever effort stays light and predictable when rotors get hot, and there are no cables to stretch or corrode. Power-off cut-off levers kill motor drive instantly when either brake is pulled.
7-Speed Shimano Derailleur Drivetrain
A 7-Speed Shimano derailleur with index shifter gives usable pedaling cadence from walking pace up to cruising speed. The wide gear range lets you add human power to extend range or climb hills.
Full Dual Coil-Spring Suspension
A telescopic coil fork up front and a rear mono-shock absorb impacts front and rear. The dual suspension design smooths out potholes, rocks, and washboard sections that would transmit directly into the rider on a rigid or hardtail bike.
Wide Moped-Style Bench Seat
The long bench-style saddle with padded surface accommodates a range of riding positions and keeps weight distributed across a wider area than a narrow MTB saddle. It is comfortable for longer rides and supports a passenger within the load rating.
Round LED Headlight
A prominent round LED headlight mounted below the handlebars runs off the main battery, providing bright forward illumination without separate batteries. A brake-activated tail-light adds visibility from behind in traffic.
Rear Swingarm with Hub Motor
The single-sided rear swingarm pivots at the bottom bracket and carries the hub motor in the rear wheel. This design simplifies rear wheel removal for tire changes and gives the bike its distinctive profile.
Overview
Built for the ride ahead.
The HKM-9359571 is built around a full-suspension frame with a moped-style bench seat and an under-seat battery compartment. The 1500 W peak motor (750 W nominal) delivers strong acceleration from stops and confident hill-climbing up to 20 degrees with a solo rider. The motor lives in the rear hub so there is no chain between motor and ground -- drive losses stay low and maintenance is minimal. The 48 V 18 Ah lithium pack stores roughly 864 Wh of energy -- well above average for this class. Throttle-only on flat pavement returns about 25-35 mi. Moderate pedal-assist on the same surface stretches to 40-50 mi. Aggressive pedaling at low assist has been measured at 60 mi from a full charge. Cold weather below 40 F (4 C) temporarily reduces available capacity by 10-20 percent. The 20 x 4.0 in NOSIN fat tires run at low pressure (8-12 psi off-road) to spread weight over a large contact patch that conforms to uneven surfaces.
App Control in Your Pocket
App control puts speed, lock, and battery readout for the HKM-9359571 in your pocket.
The details you never name are the ones you end up trusting the most. The measure of a tool is how little you notice it once the work begins. The HKM-9359571 pairs a 750 W nominal / 1500 W peak brushless rear hub motor, 48 V 18 Ah lithium-ion (864 Wh), removable and lockable, a range of 35-60 mi (56-97 km), varies with terrain, rider weight, and assist level, so it is built for real-world rides rather than showroom specs.
Full Specifications
Measurements are shown in US customary units first, with metric equivalents in parentheses.
Battery, Range, and Charging
Up to 35-60 mi (56-97 km) per charge.
The 48 V 18 Ah pack stores 864 Wh of energy. Most e-bikes ship with 400-600 Wh, so this pack runs 44-116 percent above average. That extra capacity is what makes long weekend rides possible without mid-trip charging stops. Real-world range depends primarily on how much you pedal, rider weight, tire pressure, and terrain. Throttle-only on flat pavement at moderate speed lands in the 25-35 mi band. Moderate pedal-assist on the same terrain regularly returns 40-50 mi. Aggressive pedaling at low assist has been measured at 60 mi from a full charge. Cold weather below 40 F (4 C) temporarily reduces available capacity by 10-20 percent.
Daily Use & Care
A short routine keeps the ride quiet and the range where it should be.
Run tire pressure at 8-12 psi for off-road grip; increase to 15-20 psi for paved commutes.
Rinse the frame, rims, and drivetrain with fresh water after riding on salted roads or wet gravel.
Check axle nuts and stem bolts before the first ride of each week. High-torque hub motors work fasteners loose faster than conventional bikes.
Wipe and re-lubricate the chain every 100-150 mi, or after any ride through standing water or dusty conditions.
Inspect brake pad thickness monthly. Hydraulic pads wear silently; replace when friction material is under 1 mm.
Charge indoors at room temperature. Unplug once the indicator turns green rather than leaving it connected for days.
Keep display and charge port covers closed when parked outside so moisture stays out of connectors.
What’s in the Box
Everything needed to get riding, right out of the box.
1 x HKM-9359571 Electric Fat Tire Bike
1 x HKM-9359571 electric fat tire bike
1 x 48 V 18 Ah Removable Lithium Battery Pack
1 x 48 V 18 Ah removable lithium battery pack
1 x 2 A Smart Charger with 100-240 V Input
1 x 2 A smart charger with 100-240 V input
2 x Battery Keys
2 x Battery keys
1 x Toolkit with Hex Wrenches and Pedal Spanner
1 x Toolkit with hex wrenches and pedal spanner
1 x Pair of Folding Pedals
1 x Pair of folding pedals
1 x User Manual and Assembly Guide
1 x User manual and assembly guide
Why Choose the HKM-9359571
6 reasons it earns its place.
High-Power 1500 W Peak Output
The 1500 W peak rating delivers strong acceleration from stops and confident hill-climbing. Merging into traffic and clearing intersections feels effortless with this much power on tap.
Fat Tire All-Terrain Grip
The 20 x 4.0 in NOSIN tires at 8-12 psi create a contact patch that floats over sand, grips loose gravel, and maintains traction on surfaces where ordinary tires would slide or sink.
Two Ways to Ride
Use the thumb throttle for immediate motorcycle-style acceleration, or shift through the 7-Speed Shimano gears and pedal to extend range. Most owners mix both throughout their ride.
Direct-Drive Hub Simplicity
The motor lives in the rear hub with no mid-drive gearbox, belt, or extra chain to service. Fewer moving parts means less maintenance and notably quiet operation.
Large 864 Wh Battery Pack
At 864 Wh, the 48 V 18 Ah pack holds well above the class-average energy budget. That translates into fewer charge stops per week and the freedom to take longer routes without range anxiety.
Full Suspension Comfort
Dual coil-spring suspension front and rear smooths out potholes, expansion joints, and trail obstacles. Riders who commute on mixed surfaces or ride on unpaved roads will notice the difference immediately.
Every Component Chosen for Real-World Use
Every component of the HKM-9359571 is chosen for real-world use.
It is built to be ridden regularly, cleaned easily, and kept in top condition with routine care. The HKM-9359571 pairs a 750 W nominal / 1500 W peak brushless rear hub motor, 48 V 18 Ah lithium-ion (864 Wh), removable and lockable, a range of 35-60 mi (56-97 km), varies with terrain, rider weight, and assist level, so it is built for real-world rides rather than showroom specs.
Controls & Indicators
What each control on the HKM-9359571 does.
Power Button
Located near the display; hold to switch the system on and off
Mode Buttons
Up and down buttons on the LCD cycle through 5 pedal-assist levels plus zero assist
Thumb Throttle
Right-hand thumb throttle; proportional response, independent of pedal-assist level
Speedometer
Live speed readout in mph on the LCD console
Battery Gauge
5-segment charge indicator plus percentage readout on the LCD
Light Switch
Long-press the up button to toggle the round LED headlight and integrated tail-light
Shifter
Right-hand trigger shifter for the 7-Speed Shimano rear derailleur
Frequently Asked Questions
Quick answers about the HKM-9359571.
How much assembly is required out of the box?
The bike ships approximately 85 percent assembled. Remaining steps are fitting the front wheel, straightening the handlebar, installing pedals and saddle, and checking brake alignment. Budget 30-45 minutes with the supplied tools.
What kind of terrain can this bike handle?
The 20 x 4.0 in NOSIN fat tires and full suspension make this bike capable on gravel, dirt trails, sand, packed snow, and grass. It is not intended for extreme downhill but handles fire roads, rail-trails, and beach rides with ease.
What is the actual range I should plan for?
Plan for 35-60 mi depending on how much you pedal. Throttle-only at higher speeds lands closer to 25-35 mi. Moderate pedal-assist returns 40-50 mi. Heavier riders, headwinds, hills, and low tire pressure all reduce range.
Is a license or registration required?
Rules vary by state. A 750 W nominal motor with 1500 W peak and 30 mph top speed may place this vehicle outside standard Class 1/2/3 limits in many jurisdictions. Check your state DMV before riding on public roads.
How long does the battery take to charge?
About 6-7 hours from fully empty with the supplied 2 A charger. Partial top-ups take proportionally less time; there is no need to run the pack down before recharging.
Can I pedal it if the battery runs out?
Yes. The 7-Speed Shimano drivetrain works independently of the motor. The bike weighs approximately 75 lb, so pedaling home unassisted is slow going but entirely possible on flat ground.
Can two people ride this bike?
Within the 330 lb load limit, yes. The wide bench seat can accommodate a passenger for short trips. Real-world range with two riders drops by 30-40 percent compared with solo riding. Brake earlier when carrying a passenger.
Is the battery removable for indoor charging?
Yes. It unlocks with the supplied key and lifts out from under the seat. You can also charge it in place through the accessible charge port.
Quick Troubleshooting
Common issues and what to check first.
The motor does not engage when I press the throttle.
Confirm the display is on and shows charge, the battery is locked in place, and both brake levers are fully released. If the display shows an error code, note it and contact support.
Range dropped noticeably compared with when it was new.
First check tire pressure; a soft tire on pavement is the most common cause. Then consider temperature. If range is down more than 30 percent year-round after many cycles, the pack may be approaching end of service life.
The brakes feel spongy at the lever.
Sponginess usually means air in the line or a fluid leak. Stop riding and have the system bled and inspected. Do not continue riding a 30 mph bike on compromised brakes.
The chain skips under hard pedaling.
The derailleur indexing is likely out of adjustment, or the chain and cassette are worn. Adjust the barrel adjuster a quarter turn at a time. Replace chain and cassette together if skipping persists in multiple gears.
The rear shock makes noise over bumps.
Check that the shock mounting bolts are torqued and the bushings show no cracking or excess play. A clunk usually indicates a loose bolt; a squeak may need a small amount of grease on the pivot points.
The display shows an error code and the bike will not move.
Power off, wait 30 seconds, and switch back on. If the code returns, note the exact code and conditions, then contact support.
Certifications & Standards
Documented and tested for sale.
CE
European Conformity (CE) marking where applicable for the safety and electrical assembly.
ISO 9001
Quality management system held by the manufacturing facility.
Compliance Docs
Safety and compliance documentation included with every unit on request.
Tested
Each unit is inspected and function-tested before it leaves the warehouse.
From Frame to Wheels
From the frame to the wheels, the HKM-9359571 is built for consistent, confident performance.
The specifications above show exactly what is under the surface, and the ride proves it every time. The HKM-9359571 pairs a 750 W nominal / 1500 W peak brushless rear hub motor, 48 V 18 Ah lithium-ion (864 Wh), removable and lockable, a range of 35-60 mi (56-97 km), varies with terrain, rider weight, and assist level, so it is built for real-world rides rather than showroom specs.
Pre-Ride Safety Checklist
Run through these before every ride.
Check tire pressure: 8-12 psi for off-road, 15-20 psi for pavement.
Squeeze both brake levers. They should firm up well before reaching the grip with no sponginess indicating air in the hydraulic line.
Confirm the battery is seated and locked under the seat, and the display shows expected charge.
Spin both wheels and check that rims run true and nothing rubs brake pads or frame.
Verify quick-release levers and axle nuts are tight, and the headset has no play with front brake applied.
Test the thumb throttle at walking pace in a clear area before riding in traffic or with a passenger.
Switch on the round headlight and tail-light if riding near dusk; wear a helmet rated for 30 mph speeds.
Confirm both the front fork and rear shock move freely through their travel with no visible oil leaks.
Service & Policies
Every HKM-9359571 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 750 W bike is rated at 30 mph. Read the manual first and practise throttle and braking in an open, traffic-free area. Leave extra room for braking, since stopping distance grows fast with speed and load. Wear a helmet every ride; a certified downhill or motorcycle helmet is wise at 30 mph. Do not exceed the 330 lb (150 kg) load limit, including rider, cargo, and rack load. 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 motor or battery. Charge only with the supplied charger, indoors and attended. Never open, puncture, or modify the pack. Slow down substantially on gravel, wet surfaces, and steep descents.
HKM-9359571 - Electric Fat Tire Bike. 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.
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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.
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 Time Summary
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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
