SKU: 40437301103

HKM-349971 750W Off-Road Electric Mountain Bike with 20-Inch Fat Tires for Adults - High Speed & Eco-Friendly

Sale price$450.00 Regular price$500.00
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Description

HKM-349971 750W Off-Road Electric Mountain Bike with 20-Inch Fat Tires for Adults - High Speed & Eco-FriendlyHKM 349971 750W OffRoad Electric Mountain Bike Engineered for the modern adventurerdominate rugged trails and city streets with relentless 750W power, full suspension, and fattire confidence. No terrain offlimits. 750W Brushless Motor Instant torque, whisperquiet operation, and sustained hillclimbing power. 13Ah Lithium Battery Downtube integrated, 50 km range, fast 7hour charge. 18. 631 mph Top Speed 3050 km h. Three assist levels, throttle boost for

HKM-349971 750W Off‑Road Electric Mountain Bike

Engineered for the modern adventurer—dominate rugged trails and city streets with relentless 750W power, full suspension, and fat‑tire confidence. No terrain off‑limits.

750W Brushless Motor
Instant torque, whisper‑quiet operation, and sustained hill‑climbing power.
13Ah Lithium Battery
Down‑tube integrated, 50 km range, fast 7‑hour charge.
18.6–31 mph Top Speed
30–50 km/h. Three assist levels, throttle boost for pure adrenaline.
31‑Mile Range
50 km per charge—explore farther with efficient power management.
20" x 4.0 Fat Tires
Superior floatation on sand, snow, mud. Unmatched grip and stability.
Full Suspension
Front & rear shock absorption—smooth control over rocks, roots, and bumps.

Unleash Your Trail Potential

The HKM-349971 redefines off‑road e‑biking with a purpose‑built 750W brushless motor that delivers peak efficiency and instant acceleration. Its intelligent pedal‑assist system senses your effort and amplifies it seamlessly, while a thumb throttle gives on‑demand power for steep ascents or quick getaways. Whether carving singletrack or commuting, the balance of torque and speed—up to 31 mph (50 km/h)—keeps every ride exhilarating yet controlled.

At its core, a high‑capacity 13Ah lithium battery sits flush inside the down tube, preserving the bike’s sleek silhouette and protecting cells from the elements. With an IP54 waterproof rating, you can charge through puddles and light rain without hesitation. The battery management system (BMS) continuously monitors temperature, voltage, and current, prolonging lifespan and ensuring consistent range of 31 miles (50 km).

Top Speed
18.6–31 mph
30–50 km/h
Battery
13 Ah / 48V
Li‑ion, down‑tube
Max Range
31 mi (50 km)
single charge
Tire Size
20" × 4.0
fat tire
Suspension
Full
front & rear
Brakes
Dual Disc
hydraulic

Engineering That Dominates

750W Brushless Powertrain

The high‑torque brushless motor delivers up to 80 Nm of rotational force, easily climbing grades of 25° without pedal assist. Its sine‑wave controller ensures smooth, silent acceleration—no cogging, no vibration. Choose from Eco, Trail, or Turbo modes to balance range and performance, or engage the throttle for instant full‑power delivery. The motor is IP65 rated, so dust and water splashes are no concern.

13Ah Smart Lithium Battery

Hidden within the aluminum down tube, the 48V 13Ah lithium‑ion pack uses automotive‑grade cells (18650) for high energy density and longevity. The integrated BMS protects against overcharge, over‑discharge, and short circuits. A full recharge takes only 7 hours with the included 2A smart charger. The lockable, removable battery design adds security and convenience—charge it on or off the bike.

Full Suspension System

Front suspension fork with 80mm of travel and a rear shock absorber work in unison to soak up trail chatter and hard landings. Adjustable preload lets you tune the ride for your weight and terrain. This dual‑shock setup dramatically improves traction and comfort, keeping the tires planted on uneven surfaces and reducing rider fatigue on long adventures.

Dual Disc Brakes

160mm mechanical disc brakes front and rear provide confident, progressive stopping power in wet, muddy, or dusty conditions. The large rotors dissipate heat quickly, reducing fade on long descents. Ergonomically designed brake levers offer precise modulation, so you can scrub speed smoothly or stop on a dime when the trail demands it.

20‑Inch Fat Tires (20" x 4.0)

These massive 4‑inch wide tires run at low pressure (5–30 PSI) to create a massive contact patch, delivering incredible traction and floatation. The aggressive tread pattern bites into loose dirt, gravel, sand, and snow, while the puncture‑resistant casing reduces the chance of flats. Combined with the double‑wall alloy rims, they’re built to take abuse and keep rolling.

IP54 Weather Protection

Ride through rain, splash through puddles, or wash off mud without worry. The IP54 rating means the entire electrical system is protected against dust ingress and water spray from any direction. Sealed connectors, gasketed displays, and a corrosion‑resistant frame ensure long‑term reliability in all seasons.

Rugged ABS‑Iron Frame

The fusion of high‑strength iron and lightweight ABS plastic creates a frame that’s both impact‑resistant and agile. The geometry is tuned for confident off‑road handling with a low standover height, making it accessible for a wide range of riders. The frame passed rigorous fatigue testing to withstand the stresses of trail riding and jumps.

Technical Specifications

Motor
750W brushless hub motor, peak 1000W
Top Speed
18.6–31 mph (30–50 km/h)
Range
Up to 31 miles (50 km) per charge
Battery
48V 13Ah lithium‑ion (624 Wh), removable
Charge Time
7 hours (2A charger included)
Tires
20" x 4.0 fat tire, puncture‑resistant
Suspension
Front suspension fork (80mm travel) + rear shock
Brakes
160mm mechanical disc, front & rear
Frame Material
Iron + ABS plastic
Waterproof Rating
IP54 (dust & splash resistant)
Display
LCD backlit, speed/ battery/ assist level
Modes
Pedal assist (3 levels) + thumb throttle
Weight
Approx. 68 lbs (31 kg) with battery
Max Load
300 lbs (136 kg)

Frequently Asked Questions

How does the 750W motor compare to typical e‑bike motors?
The 750W brushless hub motor delivers significantly more torque than standard 250W or 500W motors, enabling steep hill climbs and faster acceleration. It reaches 31 mph (50 km/h) with ease, yet runs efficiently at lower assist levels to maximize range.
Can I ride in rain or through puddles?
Yes. The IP54 rating ensures the electronics are protected against dust and splashing water. You can confidently ride in light to moderate rain and through shallow puddles. Avoid submerging the motor or battery completely.
How do I charge the battery and how long does it last?
The removable battery charges in about 7 hours with the supplied charger. Range varies based on assist level, terrain, and rider weight—typically up to 31 miles (50 km) in mixed conditions. Using throttle‑only reduces range; Eco pedal assist extends it.
Are fat tires necessary for off‑road riding?
The 20" x 4.0 tires provide unmatched floatation on soft surfaces like sand and snow, and increase traction on loose gravel and mud. They also act as additional suspension, absorbing small bumps and enhancing comfort.
Is the bike heavy? Can I lift it onto a car rack?
The bike weighs approximately 68 lbs (31 kg). While substantial, the removable battery helps reduce weight for lifting. Many standard hitch‑mounted racks can accommodate this weight—check your rack’s capacity. The frame geometry also aids in maneuvering.
Does it come assembled?
The bike arrives 85% assembled. You’ll need to attach the front wheel, handlebars, pedals, and seat. All tools and instructions are included. Most riders complete setup in under 30 minutes.

Free Shipping

On all orders, every day. No minimum purchase required. Delivered to your door.

180‑Day Purchase Protection

Extended peace of mind. If any manufacturing defect arises, we’ll repair or replace.

30‑Day Money‑Back Guarantee

Ride it, test it, love it—or return it within 30 days for a full refund.

24‑Month Warranty Service

Comprehensive coverage on frame, motor, and battery. Prompt support when you need it.

*Range and speed figures may vary based on rider weight, terrain, assist level, tire pressure, and weather conditions. All specifications are subject to change without notice. The HKM-349971 is intended for off‑road use; please comply with local regulations regarding e‑bike classification and usage on public roads.

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: 40437301103

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4.8 ★★★★★
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Product Reviews
D
Verified Purchase
Danyelle
Whiting, US
★★★★★ 4
Fun with a late blooming omega
Format: Kindle
I like this book. The story is fun, cute, and sexy. There's just a little drama, some excellent, steamy scenes, and a fairly good relationship building storyline. I especially like how all the main characters are a bit older than the usual 20 somethings I tend to see in this kind of book. Having said that, I wish there were more descriptions of the places, as well as the food in the fancy restaurant. I enjoyed the cocktails at the club, so I missed that kind of detail when Gray took Madison on a dinner date. I also wish there had been more interaction between Lucas and Madison, and Lucas and Rian. It felt a bit lopsided, with a focus on Rian, Madison, and Gray. I wish it had been proofread - there are a lot of typos, but nothing too distracting.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 12, 2022
J
Verified Purchase
Jennifer G
New York, US
★★★★★ 3
Madison Deserved Better
Format: Kindle
Madison was a beta...except she wasn't any longer. She was a late presenting Omega. And she was struggling. She was tall and thin, not tiny and curvy. She was opinionated. She was everything an Omega was not. After suffering through her first heat, her friends took her to Ardor, a club where Omegas came to safely find Alphas. She's not expecting much but then she connects with a sexy beta. And when she meets his Alphas, they set her body on fire. Maybe, she's found her no-strings-attached heat pack. Maybe, she's found something more. I could not connect with the characters in this book, so their story never resonated with me. And there was no love story; there was sex. Grey made it clear from the beginning that he had a true love and it was his beta boy, Rian. He went so far as to reassure Rian “Say the word, I’ll never touch her again. Lucas can put the babies in her. I only need you, beta boy”. So, Madison was there for babies, no emotions needed. Nice. No, thank you. I want the Omega to be the center of their world, not an incubator. Lucas and Rian weren't any better. After her heat, they let her leave. Not one of them made her feel valued. No one gave her a reason to stay or even offered a cuddle. And the sex didn't even come across as mind-blowing. Madison deserved better.
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Reviewed in the United States on March 11, 2025
O
Verified Purchase
Oregon BookWorm
Port Orchard, US
★★★★★ 5
No breakup, very sweet, instalove
Format: Kindle
Omegaverse and doesn't disappoint! Sweet guys, newly Omega FMC. The boyfriends are boyfriends. What's not to love? No angst, no breakup.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2025
F
Verified Purchase
ForTheLOVEofBooks
Lowell, US
★★★★★ 4
Pretty Darn Good
Format: Kindle
So I’ve been on a omega kick and this definitely hit the spot. Madison was frustrating at times with how she acted towards Lucas, Gray, and Rian. It was like she said towards the end, she didn’t believe she deserved nice things. It would have been nice to hear from her best friends again. They kind of were there in the beginning and the gone except for mention of text messages received from them. I feel like her friends would have been great help in encouraging Madison to go with the pack and never give Brent another chance because he was toxic. I loved Rian. His personality was awesome. His humor. His ability to make Madison comfortable whenever she was feeling overwhelmed. And the fact he fell for her and she fell for him first. They are cute together. I do feel like Lucas was the odd man out though. Like Lucas didn’t develop as much of a relationship with Madison. I would have really liked to see more development in the relationship between them. It was also the same with him and Rian. There is really no relationship displayed. Most of the relationship being displayed is between Rian and Gray. Nevertheless, I loved reading about the dynamic that came to fruition during the entirety of this story. Madison finally got her happiness. And Brent finally got punched in the face. Everyone got exactly what they deserve.
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Reviewed in the United States on September 6, 2022
E
Verified Purchase
ediebegonia
Fort Morgan, US
★★★★★ 3
Pack's Promise was okay but not great
Format: Kindle
Pack's Promise was okay but not great. I won't recommend it to anyone that I know. PRO: * Very likable characters * Lots of steamy scenes that are written very well * The spelling and grammar are good * The punctuation is good with the exception of using hyphens instead of commas. Lots of hyphens. Lots and lots of hyphens. CON: * Almost no interactions with any characters outside of Madison and the pack * Nearly no plot. They meet, get together for a heat, agree to make it permanent, done * Quite a few typos such as extraneous words, missing words and words out of order THINGS TO KNOW: * More steamy scenes than storytelling * A lot of MM & MMM, some MFMM during heat
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2023

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