SKU: 14999543935

HKM-955603 COSWHEEL GT20 PRO 3000W Electric Mountain Bike with 40AH Dual Battery, 40-60km/h Speed

Sale price$1214.99 Regular price$1349.99
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Ships within 48 hours · Estimated delivery Oct 13 - Oct 18

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Description

HKM-955603 COSWHEEL GT20 PRO 3000W Electric Mountain Bike with 40AH Dual Battery, 40-60km/h SpeedHKM 955603 3000W Electric Mountain Bike Unleash unstoppable power for urban commutes and rugged trails engineered with aerospace grade aluminum, dual battery endurance, and intelligent ride dynamics. 3000W Brushless Motor Peak efficiency delivering rapid acceleration and steep hill climbing up to 35 incline. Experience smooth, whisper quiet torque from 0 to 25 mph in seconds. 48V 40AH Dual Battery Massive 1920Wh capacity extends range up to 75 miles

HKM-955603 3000W Electric Mountain Bike

Unleash unstoppable power for urban commutes and rugged trails — engineered with aerospace-grade aluminum, dual-battery endurance, and intelligent ride dynamics.

3000W Brushless Motor

Peak efficiency delivering rapid acceleration and steep hill climbing up to 35° incline. Experience smooth, whisper-quiet torque from 0 to 25 mph in seconds.

48V 40AH Dual Battery

Massive 1920Wh capacity extends range up to 75 miles (120 km) in pedal-assist mode. Removable, lockable packs with smart BMS protection.

Speed 25–37 mph

Selectable speed modes let you cruise city streets at 25 mph or unlock full 37 mph off-road performance. Thumb throttle and 5-level pedal assist.

Load 265 lbs (120 kg)

Robust aircraft aluminum frame supports riders and cargo comfortably. Tested for durability on singletracks and potholed streets.

Key Specifications at a Glance
Rider Height 5'1"–6'5" (155–195 cm)
Seat Height 32.6 in (82.8 cm)
Wheelbase 47.8 in (121.4 cm)
Handlebar Width 27.2 in (69.1 cm)
Package 59.4x13.8x36.2 in
Bike Weight ~72 lbs (32.7 kg)
Aerospace-Grade Aluminum Frame

Forged from 6061 aircraft aluminum alloy, the HKM-955603 frame achieves an optimal balance of lightness and structural integrity. The hydroformed tubing reduces weight while amplifying stiffness, enabling precise handling on technical descents and responsive cornering in traffic. Corrosion-resistant treatment and smooth welds ensure longevity in wet, muddy, or coastal environments.

The geometry is tuned for stability: a 47.8-inch wheelbase and 27.2-inch handlebar width inspire confidence at high speed, while the low standover height accommodates riders from 5'1" to 6'5". Integrated internal cable routing keeps the silhouette clean and protects wiring from trail debris.

Intelligent Motor & Drive System

The high-torque 3000W brushless rear hub motor delivers instantaneous response, reaching 25–37 mph (40–60 km/h) based on terrain and mode. It employs sine wave controller technology for ultra-smooth acceleration, eliminating jerky starts and extending component life. Whether climbing a 30° fire road or accelerating from a stoplight, the motor maintains quiet operation below 55 dB.

Three ride modes — Eco, Normal, and Sport — let you balance range and thrill. The thumb throttle on the left grip provides on-demand power, while the 5-level pedal assist senses cadence and torque, blending human and electric effort seamlessly.

Dual 48V 40AH Lithium Powerhouse

Two independently removable 48V 20AH packs (total 40AH) provide an immense 1920 watt-hours. Ride up to 75 miles (120 km) on a single charge in Eco pedal-assist, or confidently tackle 45+ miles of throttle-only exploration. The Samsung/LG high-energy cells are managed by an advanced Battery Management System (BMS) that prevents overcharge, over-discharge, and temperature extremes.

Each pack locks securely to the frame with a key, and can be charged on or off the bike in 7–8 hours via the included 3A fast charger. The IP65-rated casing shields against rain, dust, and vibration, so you can charge confidently in a garage or at the office.

Advanced Suspension & All-Terrain Control

A MOZO adjustable front suspension fork with 100mm travel absorbs rocks, roots, and curbs, keeping the front wheel planted and your wrists fresh. Combined with 27.5" x 2.8" all-terrain fat tires, the bike floats over sand, snow, and loose gravel. The knobby tread pattern provides confident grip on wet pavement and dry singletrack alike.

Front and rear Tektro hydraulic disc brakes with 180mm rotors deliver consistent stopping power in all conditions. The brake sensors instantly cut motor power when levers are pulled, adding a layer of safety on steep descents.

Smart LCD Display & Connected Ride

The backlit 3.5-inch LCD dashboard keeps vital metrics in view: real-time speed, battery percentage, odometer, trip distance, assist level, and motor temperature. USB-A port under the display lets you charge a phone or GPS on the go. The intuitive button pad on the left handlebar allows mode changes without taking your eyes off the trail.

An optional Bluetooth module (sold separately) pairs with your smartphone to log rides, adjust power curves, and run diagnostics via the HKM E-Ride app.

Complete Technical Specifications
Motor Type: 3000W Brushless Rear Hub (Peak 4500W)
Battery: 48V 40AH Dual Lithium (1920Wh)
Max Speed: 37 mph (60 km/h) Sport Mode
Range: Up to 75 mi (120 km) Eco Assist
Charge Time: 7–8 hours (3A charger)
Frame: 6061 Aircraft Aluminum
Suspension: Front Adjustable 100mm Travel
Brakes: Tektro Hydraulic Disc 180mm
Tires: 27.5" x 2.8" All-Terrain Fat
Display: 3.5" LCD Backlit, USB Port
Assist Levels: 5-Level Pedal Assist + Thumb Throttle
Lighting: Front LED 800 Lumen, Rear Brake Light
Water Resistance: IP65 Rated Electronics
Weight: Approx. 72 lbs (32.7 kg)
Max Load: 265 lbs (120 kg)
Frequently Asked Questions
What is the realistic range on throttle only? +

With the 48V 40AH dual battery, throttle-only range averages 40–50 miles (64–80 km) depending on terrain, rider weight, and speed mode. In Eco mode at 20 mph, riders have reported up to 55 miles.

Can the batteries be charged separately? +

Yes, each 20AH pack charges independently. You can leave one on the bike and charge the other indoors, or charge both simultaneously with two chargers (additional charger sold separately).

Is the bike suitable for taller riders? +

The extended seatpost and adjustable handlebar stem accommodate riders from 5'1" to 6'5" comfortably. Riders up to 6'7" have also used it with an aftermarket seatpost.

How does the pedal assist feel compared to a regular bike? +

The torque sensor delivers a natural, intuitive boost that amplifies your pedaling effort. It does not feel jerky; you can fine-tune assistance from a gentle 20% push to a powerful 300% boost.

Purchase Protection & Support
180-Day Purchase Protection

If a manufacturing defect arises within 180 days, we'll repair or replace the affected part at no cost.

30-Day Money-Back Guarantee

Ride it, test it. Not satisfied? Return within 30 days for a full refund, no questions asked.

24-Month Warranty Service

Frame, motor, and battery are covered for 2 years. Our support team responds within 24 hours.

Free Shipping on All Orders

Your HKM-955603 ships free within the contiguous US. Estimated delivery 5–8 business days.

*Range estimates vary based on rider weight, terrain, assist level, and weather conditions. Specifications subject to refinement without notice. Always wear a helmet and obey local e-bike regulations.

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: 14999543935

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Kindle Customer
Lake Worth, US
★★★★★ 5
Highly recommended
Format: Kindle
Very well written. Everything is clear and well organized. It serves as a good overview of the Ubuntu server and also as a rich reference for specific arguments.
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Reviewed in the United States on November 27, 2022
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Dean T
New York, US
★★★★★ 5
Another phenomenal product from Jay
Format: Paperback
The latest version provides everything one needs to create and secure an Ubuntu server. Fantastic book Jay!
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Reviewed in the United States on February 23, 2023
V
Vic Malone
Fort Morgan, US
★★★★★ 5
Very useful book on the latest Ubuntu distro
Format: Paperback
Disclaimer: Longtime follower and subscriber to Jay LaCroix’s YouTube site, Learn Linux TV. Several high quality authors (Jang, van Vugt, and Ghori the most well known) have been introducing new comers looking for more in-depth guides to Linux to the Red Hat world through their RHCSA Study Guides. The same cannot be said for Ubuntu. While books do exist for Ubuntu, they are too general in this reviewers opinion. A noted exception is Matthew Helmke. The other is Jay LaCroix. Mastering Ubuntu Server, 4th Edition by Jay LaCroix addresses Canonical’s latest Ubuntu release, 22.04 LTS (Jammy Jellyfish). Mr. LaCroix’s book follows the same outline as the RHCSA books of installation, user management, package management, navigating the file system through the terminal, command-line usage, up to and including storage and networking. These chapters lay a solid foundation for the rest of the book, and all but one chapter ends with a section for further viewing or reading which either point to Mr. LaCroix’s well produced videos on his YouTube channel, Ubuntu’s wiki, or to one of several informative websites. The YouTube videos are a good complement to the book, and also raise the bar for what we as readers should expect from other authors and publishers. The last part of the book was my favorite. Where as the RHCSA books are confined to the scope of the test they are aimed at, Mastering Ubuntu Server has no restrictions. Chapters covering the installation of databases (MariaDB), web servers (both Apache and Nginx), virtualization (QEMU/KVM), containerization (LXD and Docker), Ansible, AWS, and Terraform along with their corresponding videos (except for Terraform) create a comprehensive learning platform. Having worked through some of these chapters along with the videos, one does get up to speed much quicker in understanding while adding a new skill to their skillset. This is important in a competitive job market. I would recommend Mastering Ubuntu Server, 4 th Edition highly to anyone wanting something current for the 22.04 LTS distribution. Having said that, I do have some admittedly subjective criticisms. In the chapter on storage, the fdisk command is introduced for formatting and partitioning disks. In an industry where it is becoming less likely to install a hard drive of 2TB or less and manufacturers have 20TB hard drives in their product line, why not also introduce the gdisk command. My other criticism is directed at the virtualization chapter and its use of Virtual Machine Manager for KVM. I got my start working with KVM through the Virtual Machine Manager as well, but on the advice of a Systems Engineer I knew, transitioned to creating, configuring and managing all my VMs through the command-line only. I wished that the author pushed more in that direction. As I said, subjective opinions, and minor overall, for a well written book by Jay LaCroix.
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Reviewed in the United States on September 9, 2022
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Roger Beickel
Houston, US
★★★★★ 3
I should have looked somewhere else.
Format: Paperback
Not very helpful. I wanted a book that would help guide me through setting up a web server. There should have been a more complete step by step guide comparing traditional methods with newer updated methods.
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Reviewed in the United States on August 9, 2025
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princesscoldheart
Charlottesville, US
★★★★★ 5
Organized well. You can read it section by section. Fantastic information. Clearly presented.
I like this book better than "what to expect" because this one does a better job of what you'll ACTUALLY expect versus telling you the throngs of horrible things that could happen to you or your baby. I'd rather be informed than mentally prodded with scary information. On one hand, it's good to know what could happen, so the other books you've probably already ordered are good to skim through, but this book I recommend reading all the way through. Easy to read, you'll actually have TIME to read it because you can read the age your baby is instead of a book that's all mixed up and organized by diseases and threats. Clear photos and explanations and tips on how to make your life and baby's life easier and better. I've understood my baby's needs better because of this book. I feel really glad I got it because it was the only book that really helped my daily life with my newborn.
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Reviewed in the United States on November 21, 2013

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