SKU: 71808868711

HKM-603603 Dual Motor Electric Mountain Bike 2000W 21-Speed Fat Tire 26'' Aluminum Alloy Frame

Sale price$765.00 Regular price$850.00
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Description

HKM-603603 Dual Motor Electric Mountain Bike 2000W 21-Speed Fat Tire 26'' Aluminum Alloy FrameHKM 603603 Dual Motor Electric Mountain Bike Conquer every trail with a 2000watt dualmotor powerhouse, precision engineering, and unstoppable allterrain capability. 2000W Dual Motor Relentless torque from dual 1000W hub motors for steep climbs and rapid acceleration. 3137 mi Range Cover 3137 miles (5060 km) on a single charge, ideal for extended adventures. 26" x 4" Fat Tires Giant traction and float over sand, snow, mud, and rocky terrain with

HKM-603603 Dual Motor Electric Mountain Bike

Conquer every trail with a 2000‑watt dual‑motor powerhouse, precision engineering, and unstoppable all‑terrain capability.

2000W Dual Motor
Relentless torque from dual 1000W hub motors for steep climbs and rapid acceleration.
31–37 mi Range
Cover 31–37 miles (50–60 km) on a single charge, ideal for extended adventures.
26" x 4" Fat Tires
Giant traction and float over sand, snow, mud, and rocky terrain with confidence.
Hydraulic Disc Brakes
Precise, fade‑resistant stopping power in wet or dry conditions for total control.

Engineered for the Unpaved

The HKM-603603 isn’t just an electric bike—it’s a redefinition of off‑road freedom. Built around a lightweight aluminum frame and powered by a dual‑motor system, it blends trail‑ready durability with the effortless thrust of 2000 watts. Every component, from the 26‑inch suspension fork to the 4‑inch wide tires, is selected to let you ride farther, climb higher, and explore without compromise.

Dual Motor Dominance

Two independent 1000W hub motors deliver a combined 2000W of raw power. You can engage both for maximum torque on loose ascents or switch to single‑motor mode to conserve battery on easier terrain. The intelligent controller distributes power smoothly, preventing wheel slip and ensuring a natural ride feel.

With a peak torque that rivals mid‑drive systems, the HKM-603603 conquers 30° inclines without hesitation. Throttle response is immediate, and the twist grip lets you meter power with precision.

High‑Capacity Lithium Battery

The lithium‑ion pack is seamlessly integrated into the down tube, optimizing weight distribution and keeping the center of gravity low. A full charge takes just over 3 hours, giving you a real‑world range of 31–37 miles (50–60 km). The battery management system protects against overcharge, over‑discharge, and temperature extremes.

Whether you’re commuting or trail riding, the removable battery makes charging convenient—simply unlock and bring it indoors.

Precision Gear & Suspension

The 21‑speed drivetrain gives you the right gear for every grade. Paired with the front suspension fork, which offers 80mm of travel, the bike absorbs rocks and roots while maintaining precise steering. The aluminum alloy frame is both strong and surprisingly light, making it easy to maneuver on tight singletrack or carry when necessary.

All‑Terrain Fat Tires

The 26 x 4.0‑inch tires are the foundation of the HKM-603603’s versatility. Run them at lower pressure to create a massive contact patch that floats over soft surfaces, or inflate harder for paved efficiency. The aggressive tread pattern bites into dirt and gravel, while the wide footprint inspires confidence on off‑camber sections.

Hydraulic Braking Confidence

Hydraulic disc brakes with 180mm rotors front and rear deliver consistent, powerful stopping. The sealed system requires minimal maintenance and provides excellent modulation, so you can scrub speed before a switchback or come to a controlled stop on steep descents.

Intelligent Display & Controls

The backlit LCD display keeps you informed with speed, battery level, trip distance, and assist mode. The twist throttle is ergonomically placed for natural operation, and the control pad lets you toggle between power levels without removing your hands from the grips.

Technical Specifications

MotorDual 1000W hub (2000W total)
BatteryLithium‑ion (down‑tube integrated)
Range31–37 mi (50–60 km)*
Charge Time~3.2 hours (0–100%)
DisplayBacklit LCD (speed, battery, trip)
Top Speed28 mph (45 km/h) **
Gears21‑speed Shimano‑compatible
SuspensionFront fork, 80mm travel
Tires26" x 4.0" fat tires
BrakesHydraulic disc, 180mm rotors
ThrottleTwist grip
Frame6061 aluminum alloy
WeightApprox. 68 lbs (31 kg)
Max Load330 lbs (150 kg)

*Range varies based on rider weight, terrain, assist level, and weather. **Speed may be limited by local regulations; always ride responsibly.

Why the HKM-603603 Stands Apart

True All‑Wheel Drive

Unlike single‑motor e‑bikes, the dual‑motor setup provides superior traction by powering both wheels. You stay planted on loose gravel, wet roots, and sandy washes.

Instant Torque on Demand

The twist throttle eliminates lag—simply dial in as much assist as you need. Combined with the 21‑speed gearing, you can fine‑tune your effort for any gradient.

Optimized Weight Balance

The battery placement in the down tube lowers the center of mass, making the bike feel more agile than its 68 lb weight suggests. Handling remains predictable even on technical descents.

Quick Charge, Long Ride

Recharge in about 3 hours—perfect for a midday top‑up or overnight. The range is sufficient for most daily commutes or an afternoon of trail exploration.

Frequently Asked Questions

What is the real‑world range of the HKM-603603?

Under typical mixed terrain with moderate assist, riders achieve 31–37 miles (50–60 km). Factors like rider weight, tire pressure, wind, and elevation change can influence actual range. Using dual‑motor mode consumes more energy, reducing range by about 15–20%.

Can I ride it in the rain or through puddles?

The bike is built with an IP54‑rated electrical system, meaning it is protected against splashing water from any direction. It’s safe for light rain and wet roads, but should not be submerged or pressure‑washed. Always dry the chain and components after exposure to moisture.

How fast can it go?

The top speed on throttle alone is 28 mph (45 km/h) on flat ground with a fully charged battery. Many regions restrict e‑bike speeds to 20 mph (32 km/h) on public roads; please comply with local regulations.

Is the battery removable?

Yes. The lithium‑ion pack locks into the down tube and can be removed with the included key. This allows convenient indoor charging and adds security when parking outside.

What is the weight limit?

The HKM-603603 supports a maximum payload of 330 lbs (150 kg), including rider and cargo. The reinforced frame and fat tires are designed to handle this load comfortably.

Do I need a license or registration?

Regulations vary by country and state. In most US jurisdictions, a 2000W e‑bike is classified as a moped or off‑road vehicle and may require a driver’s license, registration, and insurance. Please check your local laws before riding on public roads.

Purchase with Confidence

Every HKM-603603 is backed by a comprehensive support package designed to give you peace of mind from the moment you order.

Free Shipping on All Orders
Complimentary standard shipping to the contiguous US. Your bike arrives fully assembled and ready to ride.
180 Days Purchase Protection
We cover manufacturing defects for a full 180 days, ensuring your investment is protected from day one.
30‑Day Money‑Back Guarantee
Not completely satisfied? Return it within 30 days for a full refund. No restocking fees, no hassle.
24 Months Warranty Service
Two years of coverage on the frame, motor, and battery. Our support team is available 7 days a week.

HKM-603603 Dual Motor Electric Mountain Bike — Explore Further.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 71808868711

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4.2 ★★★★★
Based on 19 reviews
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Product Reviews
M
Verified Purchase
Mark L. S.
Battle Creek, US
★★★★★ 5
Good value, well made, easy assembly.
Size: 13"-32", Style: Single
Well made, easy assembly, very versatile and cable management included.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
P
Verified Purchase
Patrick
Dallas, US
★★★★★ 5
Overdo is what I do
Size: 13"-32", Style: Single
Since my 50" monitor is under the 22lb weight limit, I decided to give this arm a shot. Nobody seems to make an arm for something as big as a 50-inch even if they don't actually weigh that much. So what happened? The arm CAN support that weight and size. The manufacturer did a great job on the materials and it assembles very easily. For a regular monitor, this arm should work great. But the clamp design is not exactly sturdy enough for my bigger screen that exceeds the intended use. Clamped to the table top alone, the pole had a serious and unsafe lean to it. I ended up reinforcing my table with three layers of plywood secured with lag bolts right through the table top. Between the layers of plywood is the table top and a steel beam that the table top sits on. So this is a ridiculously strong base. With that in place, the arm does hold the monitor in the fully retracted position. Extended, there is way too much leverage and the arm starts to lean. So don't do that. It needs to stay totally retracted to the pole. To fit my monitor, I had to get VESA extension wings and those worked fine. This provides the solution I am going to use: angle irons bolted to the wings and running down to the table. I have room to do this. The angle irons will take up most of the weight and let the arm stay vertical and let me move it around. So it will be a three-legged mount instead of one. Eh. It will work fine for me until I come up with something better. Very tempted to drill holes in the clamp base and lag bolt that to the table. Nothing is going to beat that except welding it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 6, 2022
G
Verified Purchase
gabe
Los Angeles, US
★★★★★ 5
27" monitor mounted easily
Style: Single Arm, Size: 13"-34", Style: Single Arm, Size: 13"-34"
I ended up getting 2 of these monitor arms for the different desks in our office, and I am happy with both of them. The arms are super easy to assemble and adjust to the tension one desires. The arms hold the position where one sets them too, and the gas pistons make it super easy to use. Each arm has a channel on the bottom that allows the wiring to be ran through and hidden, yet remaining accessible if needed. The mounting clamps hold securely and there is no wiggle whatsoever, and it is nice to have a strong feeling monitor mount. It is lightweight and compact so it doesn't feel clunky on the desk. Highly adjustable left to right, up and down, and the screen forward and backward tilt. The price is really good for the overall value and quality of the product. Just make sure to order the right mounting arm depending on the size of your monitor, and you will be fine. Nice quality and feel, and the aesthetics are great too.
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Reviewed in the United States on May 1, 2026
N
Verified Purchase
NYC Ninja
West Palm Beach, US
★★★★★ 5
Get this one!
Style: Dual Arms, Size: 13"-32", Style: Dual Arms, Size: 13"-32"
I got this dual monitor arm for my home office, and it’s been a total game changer. Having a dual monitor setup makes multitasking so much easier, especially for photo and video editing. Setup was incredibly quick (under 5 minutes), and it feels very secure once mounted. I really like how stable it is and how easy it is to adjust the height and angle. It also helped clear up a lot of desk space since I no longer need bulky monitor stands. Simple design, but it works perfectly. Highly recommend for both single and dual monitor setups. Great value for the price!
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Reviewed in the United States on March 22, 2026
J
Verified Purchase
James
Natrona Heights, US
★★★★★ 5
Pretty great product
Style: Dual Arms, Size: 17"-33"
Stand works great and as expected. I have a 32” monitor on one and a 26” ultra wide in the vertical position on the other. I’ve had them for a few months and they’ve held tension perfectly. Usually, I find these spring tension arms to become loose after a few months and you just tighten them back up, these are still stiff like when I first set them up, and I move them around quite often. The monitors can rotate 360 degrees and tilt up and down almost 90 degrees each way. The clamp is sturdy so you will feel comfortable making sure it’s tight on the desk. I do plan on drilling a hole to mount the desk to mount it without a clamp and will update my review when I do so. It comes with the hardware to do either mounting options. They're made entirely of metal except for the plastic cable trays that clip along the bottom of the arms. The entire build is well worth the cost and gives me more space on my desk and helps my workflow when editing photos or editing video.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026

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