Electric Mountain Bike Series
HKM-684947 29" Full Suspension
HKM-684947 29" Full Suspension
Electric Mountain Bike
Engineered for riders who demand uncompromising performance across rugged trails and urban landscapes. Where advanced electric propulsion meets precision mountain bike engineering.
19–31 mph
Top Speed (30–50 km/h)
37+ miles
Range Per Charge (60+ km)
750–1000W
Rear Hub Motor Power
48V 19.2Ah
Lithium Battery Capacity
Powertrain & Motor System
At the heart of the HKM-684947 lies a robust rear hub motor delivering between 750 and 1,000 watts of continuous power output. This brushless motor is engineered for efficiency, translating electrical energy into smooth, responsive acceleration that feels intuitive and controlled. Whether you're climbing steep grades or cruising on flat terrain, the motor's torque curve has been optimized to provide meaningful assistance without overwhelming the rider's input.
Instant Torque Delivery
The rear hub motor provides immediate torque from a standstill, enabling confident starts on inclines up to approximately 28 degrees. Riders experience a natural power curve that complements pedal input seamlessly.
Triple Assist Modes
Select from three levels of pedal-assist intensity to match your riding style and terrain. Eco mode extends range, Trail mode balances performance, and Boost mode unlocks full power for demanding climbs.
Battery & Range Technology
The HKM-684947 is equipped with a high-density 48V 19.2Ah lithium-ion battery pack. This substantial energy reservoir provides a real-world range exceeding 37 miles (60 kilometers) on a single charge under mixed riding conditions. The battery is designed for longevity, featuring a sophisticated Battery Management System (BMS) that safeguards against overcharging, overheating, and deep discharge cycles.
Smart BMS Protection
The integrated Battery Management System continuously monitors cell voltage, temperature, and charge cycles to maximize battery lifespan and ensure safe operation across diverse environmental conditions.
Removable Design
The battery pack is easily removable for convenient off-bike charging. A full recharge takes approximately 6–8 hours, making overnight charging a practical routine for daily commuters and weekend adventurers alike.
Full Suspension Platform
The full suspension architecture of the HKM-684947 is designed to absorb impacts and maintain tire contact across uneven terrain. The front fork and rear shock work in harmony to dampen vibrations, reducing rider fatigue and enhancing control. This dual-suspension setup is a defining feature that sets this bike apart from hardtail alternatives, offering significantly improved comfort on rocky descents, root-laden singletrack, and potholed city streets.
Front Fork Absorption
The front suspension fork features adjustable preload and rebound damping, allowing riders to fine-tune the response based on trail conditions and personal preference for optimal front-end control.
Rear Shock Damping
The rear shock absorber is calibrated to handle both high-frequency chatter and larger impacts, maintaining rear wheel traction when it matters most—during descents and technical sections.
Hydraulic Disc Brake System
Stopping power is a critical safety factor on any electric mountain bike, and the HKM-684947 delivers with a premium hydraulic disc brake system. Unlike mechanical cable-actuated brakes, hydraulic systems provide superior modulation, requiring less lever effort to generate substantial braking force. This translates to shorter stopping distances and greater rider confidence, especially when navigating steep descents or reacting to unexpected obstacles on the trail.
Precise Modulation
Hydraulic fluid transfer ensures linear and predictable brake response, giving riders the ability to precisely modulate braking force for maximum control in technical terrain.
All-Weather Reliability
The sealed hydraulic system resists contamination from mud, dust, and water, maintaining consistent braking performance in wet, dry, and muddy conditions without cable stretch or corrosion concerns.
27-Speed Drivetrain
Flexibility across diverse terrain is enabled by the 27-speed gearing system. With three chainrings at the front and a 9-speed cassette at the rear, riders have access to a wide gear range that handles everything from steep mountain ascents to fast-paced road sections. When combined with the electric motor assist, the drivetrain provides an exceptional breadth of usable gear ratios, ensuring you always find the right cadence.
Wide Gear Range
From ultra-low climbing gears to high-speed cruising ratios, the 27-speed setup provides the mechanical advantage needed for any gradient or pace, complementing the electric motor seamlessly.
Smooth Shifting
Precision-engineered derailleur components ensure crisp, reliable gear changes under load, minimizing chain slippage and maintaining momentum through shifting transitions.
29-Inch Wheel Advantage
The 29-inch wheel platform is a proven choice for mountain biking, offering superior rollover capability and enhanced stability. Larger wheels maintain momentum more effectively over rough terrain, bridging gaps between rocks and roots that would unsettle smaller wheels. On paved surfaces, the increased diameter contributes to efficient cruising and a planted, confident feel at higher speeds.
Enhanced Rollover
The larger wheel diameter reduces the effective angle of attack against obstacles, smoothing out trail irregularities and maintaining forward momentum with less effort from both rider and motor.
Superior Stability
A longer contact patch and increased gyroscopic stability at speed inspire confidence on fast descents and loose surfaces, giving riders greater control in challenging conditions.
Aluminum Alloy Frame Construction
The frame is crafted from high-grade aluminum alloy, striking an ideal balance between lightweight agility and structural durability. This material choice resists corrosion, withstands the rigors of off-road use, and provides a responsive ride feel. The frame geometry has been optimized for electric mountain biking, with a lower center of gravity that accommodates the battery and motor weight while maintaining nimble handling characteristics.
Optimized Geometry
The frame's geometry is purpose-built for e-MTB riding, with a slack head tube angle for descending stability and a steep seat tube for efficient climbing posture.
Corrosion Resistant
The aluminum alloy construction naturally resists rust and oxidation, ensuring the frame maintains its structural integrity and appearance through seasons of use in varied environments.
Technical Specifications
Model
HKM-684947
Wheel Size
29 inches
Frame Material
Aluminum Alloy
Suspension Type
Full Suspension (Front & Rear)
Brake System
Hydraulic Disc Brakes
Gearing
27-Speed Drivetrain
Motor Type
Brushless Rear Hub Motor
Motor Power
750–1000 Watts
Top Speed
19–31 mph (30–50 km/h)
Battery
48V 19.2Ah Lithium-Ion
Range
37+ miles (60+ km)
Charge Time
Approx. 6–8 Hours
Max Rider Weight
Approx. 330 lbs (150 kg)
Recommended Rider Height
5'3"–6'4" (160–193 cm)
Versatile Riding Applications
The HKM-684947 is purpose-built to excel across a spectrum of riding scenarios. From daily urban commutes to weekend backcountry explorations, this electric mountain bike adapts to the demands of each environment with composure and capability.
Urban Commuting
Navigate city streets with confidence. The electric assist flattens hills and accelerates from stoplights, while the full suspension absorbs potholes and curb transitions for a refined daily ride.
Trail Exploration
Tackle singletrack, fire roads, and technical trails with the assurance of full suspension and powerful electric assist, extending your exploration range beyond what human power alone could achieve.
Weekend Adventure
Load up for a full day of riding. The robust frame and powerful motor handle extended adventures with ease, while the generous battery range keeps you exploring longer.
Fitness Riding
Use adjustable assist levels to tailor your workout intensity. Dial back the motor for a challenging ride or increase assistance to focus on endurance and recovery sessions.
Why the HKM-684947 Stands Apart
In a crowded market of electric bicycles, the HKM-684947 differentiates itself through a combination of thoughtful engineering choices and premium component selection. Here's how this model addresses common rider pain points and delivers a superior experience:
True Full Suspension
Many e-bikes in this category use only front suspension. The HKM-684947's dual-suspension design dramatically improves comfort and control on rough terrain, reducing fatigue on long rides.
High-Capacity Battery
With 48V 19.2Ah, the battery capacity exceeds many competitors at this price point, delivering real-world range that eliminates range anxiety on extended outings and multi-stop commutes.
Hydraulic Braking
While many budget e-bikes rely on mechanical disc brakes, the hydraulic system on the HKM-684947 offers demonstrably better stopping power and modulation—critical for a bike capable of 31 mph speeds.
27-Speed Versatility
The wide gear range means you're never caught in the wrong ratio, whether climbing without motor assist or cruising at top speed on flat pavement with the motor engaged.
Frequently Asked Questions
What is the actual range I can expect on a single charge?
Range varies based on rider weight, terrain, assist level, and riding conditions. Under mixed conditions with moderate pedal assist, most riders achieve 37–50 miles (60–80 km). Using maximum assist on hilly terrain may reduce range to approximately 30–35 miles (48–56 km), while conservative Eco-mode riding on flat ground can exceed 55 miles (88 km).
How does the full suspension benefit everyday riding?
The full suspension system absorbs road imperfections, speed bumps, and trail obstacles that would otherwise transmit harsh vibrations to the rider. This significantly reduces fatigue on longer rides, improves traction on uneven surfaces, and provides a more comfortable experience whether you're commuting on potholed streets or descending rocky singletrack.
Is the battery removable for charging?
Yes, the 48V 19.2Ah lithium battery is designed to be easily removed from the frame. This allows for convenient off-bike charging in your home, office, or apartment. The battery locks securely into the frame during rides and can be removed in seconds using the included key.
What maintenance does the hydraulic brake system require?
Hydraulic disc brakes require minimal routine maintenance compared to mechanical systems. Periodic pad inspections and occasional brake fluid checks are recommended. The sealed hydraulic lines resist contamination, meaning consistent performance with less frequent adjustments than cable-actuated alternatives.
Can this bike be ridden without electric assist?
Absolutely. The 27-speed drivetrain functions as a traditional bicycle when the motor is disengaged. While the bike is heavier than a non-electric mountain bike due to the motor and battery, the wide gear range allows for comfortable unassisted riding on flat and moderately inclined terrain.
What type of terrain can the 29-inch wheels handle?
The 29-inch wheels excel on a wide variety of surfaces including paved roads, gravel paths, hardpack dirt, rocky trails, and root-covered singletrack. The larger diameter provides superior rollover capability, helping the bike maintain momentum through technical sections that would challenge smaller wheel sizes.
Rider Experience Highlights
Beyond specifications and component lists, the true measure of any electric mountain bike is how it feels on the trail. The HKM-684947 has been refined to deliver a connected, engaging ride experience that keeps you coming back for more. Here are the experiential qualities that define this bike:
Natural Power Delivery
The pedal-assist system is tuned to feel intuitive rather than abrupt. Power ramps up smoothly as you apply pressure to the pedals, creating a sensation that amplifies your effort rather than replacing it entirely.
Confidence-Inspiring Handling
The combination of 29-inch wheels, full suspension, and a well-balanced frame geometry creates handling that feels stable at speed yet responsive when navigating tight corners and switchbacks.
Quiet Operation
The brushless rear hub motor operates with minimal audible noise, allowing you to enjoy the sounds of nature on trail rides or navigate urban environments without drawing unwanted attention.
All-Day Comfort
From the ergonomic saddle to the vibration-damping suspension, every touchpoint has been considered for long-ride comfort. Riders report significantly less fatigue compared to hardtail e-bikes after multi-hour adventures.
Technology Deep Dive
Brushless DC Motor
The sensorless brushless motor design eliminates internal friction points, improving efficiency and extending the operational lifespan well beyond brushed motor alternatives.
Li-Ion Cell Array
Premium lithium-ion cells arranged in a 48V configuration deliver consistent voltage output throughout the discharge cycle, maintaining performance until the battery nears depletion.
Purchase with Confidence
Every HKM-684947 is backed by comprehensive coverage designed to protect your investment and ensure peace of mind.
Free Shipping on All Orders
Complimentary standard shipping on every HKM-684947 order. Your bike arrives carefully packaged and ready for assembly.
180-Day Purchase Protection
Extended protection covers manufacturing defects and material flaws for a full 180 days from the date of delivery.
30-Day Money-Back Guarantee
Not satisfied? Return your bike within 30 days for a full refund. We stand behind the quality of every ride we deliver.
24-Month Warranty Service
Comprehensive two-year warranty coverage on the frame, motor, and battery. Ride with confidence knowing you're covered.
The HKM-684947 29-Inch Full Suspension Electric Mountain Bike represents a convergence of thoughtful engineering, quality components, and rider-focused design. Whether your journey takes you across town or into the wilderness, this bike is ready to elevate every ride.
Ready to ship
Nationwide Service Network & Support
With over 3,000 authorized service centers across the United States, we ensure comprehensive after-sales support for your vehicle, giving you complete peace of mind.
We understand that maintenance needs may arise. When you purchase from us, you gain access to our unparalleled service ecosystem designed for maximum convenience and reliability.
1. DIY Repair & Parts Replacement:
For minor repairs or part replacements that can be handled personally, we provide cost-price genuine parts during the warranty period. Each order is accompanied by clear, step-by-step video tutorials to guide you through the self-repair process seamlessly.
2. Professional Servicing:
For issues requiring expert attention, simply contact our support team. We will locate the nearest authorized service center based on your order and location details. You only need to bring your vehicle to the designated center. Once servicing is complete, we will notify you for pickup. All repairs are free during the warranty period; afterward, only cost-based fees apply.
Rest assured—wherever you are, our extensive partner network is ready to keep your ride running smoothly.
Lifetime Limited Powertrain Warranty & Wrap Program
For added long-term security, our Lifetime Limited Powertrain Warranty and Lifetime Wrap Program provide continued mechanical breakdown coverage for as long as you own your vehicle—with no term or mileage restrictions.
Every product on Hekomart.com is expertly curated from thousands, quality tested, and lifestyle approved. Elevate your everyday.
Express Delivery Priority - Where Speed Meets Satisfaction
At Hekomart.com, we understand the anticipation that comes with every online order. While most platforms rely on standard economy shipping, we prioritize your excitement by strategically selecting premium express carriers to accelerate deliveries. Our intelligent logistics system analyzes real-time data to optimize routes, partnering with globally-recognized couriers like DHL, FedEx, and UPS to ensure 30% faster doorstep arrivals* than industry averages.
Every package receives 24/7 tracking visibility and proactive delivery updates, transforming waiting time into confidence. For time-sensitive purchases, our "Expedited Service Guarantee" offers optional priority handling at no extra cost, because your satisfaction isn't just a goal – it's the core of our delivery DNA.
*Based on internal 2025 data comparing standard shipping durations across major platforms. Delivery times vary by destination and customs procedures.
Credit Card 180 Days Purchase Protection
The 180 Days Purchase Protection protects the buyer if an item purchased has not been shipped or if a shipped item is significantly not as described by the seller. The 180 Days Purchase Protection covers all purchases and payments made through our website. We accept Visa, Master Card, American Express, and Discover Card. If you don't receive the item that you ordered, or it shows up significantly different from its description, you may qualify for Purchase Protection, and we'll reimburse you for the full purchase price plus any original shipping costs, subject to terms and limitations. If you are charged for a transaction that you didn't make, let us know within 60 days, and we've got you covered.
30 Days Money-Back Guarantee
We are confident that our products are of great quality and even better value. However, if upon receiving and inspecting your item you decide that you want to return it, you will have 30 days as of the date of shipment arrival to return it for a refund minus the shipping cost. No restocking charges. Any additional fees associated with a purchase transaction will be deducted from the amount of the refund.
24-Month Extended Warranty Service
If you purchase products from our website, you have 24 months to request repairs or replacement if any products turns out to be faulty or are not as advertised. During the warranty period if any product is found to have a manufacturer defect, we will repair or replace the defective part(s). If a product cannot be repaired or replaced within a reasonable time, you can request a refund or price reduction. We are confident that our products are of great quality and even better value. However, if upon receiving and inspecting your item you decide that you want to return it, you will have 30 days as of the date of shipment arrival to return it for a refund minus the shipping cost.
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