HKM-745491
Electric Mountain Bike
Engineered for uncompromising off-road performance. Where raw power meets precision control on the most demanding trails.
The HKM-745491 redefines what an electric mountain bike can achieve. Built around a formidable 6000W brushless motor and a high-capacity 30AH lithium battery, this fat-tire machine delivers an exhilarating blend of torque, range, and durability. Every component has been selected to conquer rugged terrain while maintaining the refined ride quality expected from a premium e-bike.
Key Performance Highlights
6000W Brushless Motor
Massive power output for steep ascents and rapid acceleration. The brushless design ensures higher efficiency, reduced maintenance, and extended motor life compared to brushed alternatives.
250 Nm Torque30AH Lithium Battery
Industry-leading capacity delivering over 37 miles (60 km) of range. High-density lithium cells provide consistent power output across the entire charge cycle with minimal voltage sag.
37+ mi RangePowertrain: The Heart of Adventure
At the core of the HKM-745491 lies a 6000W brushless DC motor—a marvel of modern electric propulsion. Unlike traditional brushed motors that rely on physical commutators and carbon brushes, this brushless design uses electronic commutation to eliminate friction points, dramatically improving efficiency and longevity. The result is a motor that converts more electrical energy into forward motion with less heat generation.
184
lb-ft Peak Torque
250
Nm Peak Torque
43
mph Top Speed
With 184 lb-ft (250 Nm) of torque on tap, the HKM-745491 tackles inclines that would challenge lesser e-bikes. This torque figure rivals that of compact automobiles, translating to effortless hill climbs and brisk acceleration from a standstill. The motor's sealed construction also contributes to the bike's IPX65 water resistance, allowing confident riding through rain, mud, and puddle-laden trails.
Endurance: Ride Beyond Boundaries
The 30AH lithium battery represents the upper echelon of e-bike energy storage. With a total energy capacity that supports over 37 miles (60 km) of real-world riding, the HKM-745491 liberates you from range anxiety. Whether you're exploring remote forest paths or commuting across town, this battery delivers dependable, fade-free power.
30 AH
Battery Capacity
37+ mi
Range (60+ km)
Lithium
Cell Technology
Lithium-ion technology offers superior energy density compared to older lead-acid or nickel-based batteries. This means more range per pound of battery weight, faster charging, and a longer service life—typically 800 to 1,200 full charge cycles before noticeable capacity degradation. The integrated battery management system (BMS) continuously monitors cell voltage, temperature, and charge balance to ensure safe, optimal performance in all conditions.
Chassis & Tire Engineering
17-Inch Wheels
Oversized 17-inch (43.2 cm) wheels paired with wide-profile fat tires create an immense contact patch, delivering exceptional grip on loose gravel, sand, snow, and muddy terrain.
Fat Tire Stability
Wide tires absorb trail imperfections naturally, reducing rider fatigue. The larger air volume allows lower tire pressures for a plush ride without risking pinch flats on rocky descents.
The 17-inch wheel diameter strikes an ideal balance between rollover capability and agile handling. Smaller than full-size motorcycle wheels yet larger than standard bicycle rims, this size allows the fat tires to achieve an overall diameter comparable to a 26-inch mountain bike wheel. This geometry provides confident straight-line tracking at speed while remaining responsive through tight switchbacks. The wide tire footprint also distributes the bike's weight more evenly, reducing ground pressure for improved flotation on soft surfaces.
Braking System: Control at Any Speed
With a top speed of 43 mph (70 km/h), reliable stopping power is non-negotiable. The HKM-745491 is equipped with hydraulic disc brakes—the gold standard in cycling brake technology. Unlike mechanical disc brakes that rely on a steel cable subject to stretch and friction, hydraulic systems use sealed fluid lines to transmit force from the lever to the caliper with near-zero loss.
Hydraulic Disc Brakes
Progressive, fade-resistant stopping power with excellent modulation. Performs reliably in wet and muddy conditions where rim brakes would falter.
Large Rotor Design
Oversized brake rotors provide greater thermal mass, dissipating heat quickly during prolonged descents to maintain consistent braking performance.
Frame Construction & Durability
The HKM-745491's frame is forged from carbon steel—a material prized for its exceptional strength-to-weight ratio and fatigue resistance. Carbon steel absorbs vibrations more effectively than aluminum, contributing to a smoother ride on rough terrain. The frame geometry has been optimized for off-road stability, with a low center of gravity that inspires confidence on technical descents.
331 lbs
Maximum Load Capacity (150 kg)
Accommodates riders and gear with generous headroom, making it suitable for bikepacking, cargo hauling, and heavier riders.
5-Speed Gear System
The 5-speed gear system provides a versatile range of ratios to match varying terrain and riding conditions. Lower gears maximize torque for steep climbs, while higher gears enable efficient cruising at speed. The intuitive shifting mechanism allows smooth, precise gear changes so you can adapt instantly to changing trail gradients.
Adaptive Gear Range
Five distinct ratios let you optimize motor output and pedaling cadence for any scenario—from crawling up boulder-strewn paths to cruising on open fire roads.
IPX65 Weather Protection
Adventure doesn't wait for perfect weather, and neither should you. The HKM-745491 carries an IPX65 waterproof rating, meaning it is fully protected against dust ingress and can withstand powerful water jets from any direction. Ride confidently through rain showers, splash through streams, and wash the bike down after a muddy session without concern for the electrical components.
The IPX65 designation indicates complete dust-tightness (first digit "6") and protection against water projected from a nozzle (second digit "5"). This level of sealing extends to the motor housing, battery compartment, display unit, and all critical wiring connectors.
Technical Specifications
6000W
Motor Power
184 lb-ft
Torque (250 Nm)
30 AH
Battery
37+ mi
Range (60+ km)
43 mph
Top Speed (70 km/h)
17 in
Wheel Size (43.2 cm)
331 lbs
Max Load (150 kg)
IPX65
Waterproof Rating
5-Speed
Gear System
Hydraulic
Disc Brakes
Carbon Steel
Frame Material
Fat Tire
Tire Type
Why Brushless Motor Technology Matters
Brushless DC (BLDC) motors represent a significant advancement over traditional brushed designs. In a brushed motor, physical carbon brushes press against a rotating commutator to deliver current, creating friction, sparking, and wear over time. A brushless motor eliminates these components entirely, using an electronic controller to sequence current through the stator windings. The benefits are substantial:
Higher Efficiency
Without brush friction, BLDC motors convert up to 90% of electrical energy into mechanical output, extending range per charge.
Longer Lifespan
No brushes to replace means dramatically reduced maintenance and a motor that can run for thousands of hours with minimal degradation.
Quieter Operation
The absence of brush-commutator contact eliminates the characteristic whine of brushed motors, resulting in near-silent propulsion.
Precise Control
Electronic commutation allows the controller to adjust power delivery with millisecond precision for smoother acceleration.
Frequently Asked Questions
What type of terrain is the HKM-745491 designed for?
The HKM-745491 excels on rugged off-road terrain including dirt trails, rocky paths, sand, gravel, and even light snow. Its fat tires, powerful motor, and robust frame make it suitable for mountain biking, trail exploration, and backcountry adventure riding. The 17-inch wheels with wide tires provide exceptional stability and grip across diverse surfaces.
How does the hydraulic disc brake system compare to mechanical brakes?
Hydraulic disc brakes offer superior modulation, more consistent performance, and reduced maintenance compared to mechanical disc brakes. The sealed fluid system eliminates cable stretch and friction, providing a lighter lever feel with more precise control. They also self-adjust for pad wear and perform more reliably in wet or muddy conditions.
What does the IPX65 waterproof rating mean in practical terms?
IPX65 means the HKM-745491 is fully dust-tight and protected against water jets from any direction. In real-world terms, you can confidently ride in heavy rain, cross shallow streams, and wash the bike with a hose (avoiding direct high-pressure spray into sensitive areas). It is not designed for complete submersion, so avoid deep water crossings that could submerge the motor or battery.
What is the real-world range I can expect from the 30AH battery?
The over 37-mile (60 km) range is achievable under mixed riding conditions with moderate pedal assistance. Factors that influence actual range include rider weight, terrain steepness, assist level selected, tire pressure, ambient temperature, and riding style. Conservative riding on flat terrain with lower assist levels can yield even greater distances, while aggressive throttle-only riding on hilly terrain will reduce range accordingly.
What maintenance does the carbon steel frame require?
Carbon steel frames are extremely durable but benefit from basic care. Keep the frame clean and dry after rides, promptly address any paint chips or scratches with touch-up paint to prevent surface corrosion, and periodically inspect weld points. With proper care, a carbon steel frame can provide decades of reliable service. The material's natural vibration-damping properties also contribute to ride comfort without additional maintenance.
Can the 5-speed gear system handle steep climbs?
Absolutely. The 5-speed gear system is specifically designed to provide low gear ratios for climbing and higher ratios for flat-ground efficiency. Combined with the motor's 184 lb-ft (250 Nm) of torque, even the steepest inclines become manageable. The gear system allows you to keep the motor operating in its most efficient RPM range regardless of terrain gradient.
Purchase with Confidence
Free Shipping
Complimentary shipping on all orders with professional packaging to ensure your bike arrives in pristine condition.
180-Day Protection
Extended purchase protection covers manufacturing defects and ensures your investment is safeguarded for half a year.
30-Day Money-Back
Not completely satisfied? Return within 30 days for a full refund—no questions asked, no restocking fees.
24-Month Warranty
Comprehensive two-year warranty service covering the motor, battery, frame, and all major components for peace of mind.
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.
You May Also Like
HKM-284435 Electric Fat Tire Mountain Bike with 1500W Motor and 20-Inch Wheels
Regular price
$1,299.99
Future-Forward Finds
Curated Selections
HKM-075859 48V 750W Electric Bike with 7 Speed Gears and Integrated Battery
Regular price
$1,799.99
HKM-797907 Folding Electric Snow Bike with 20-Inch Wheels and 7-Speed Gearing
Regular price
$1,049.99
