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Description
HKM-944787 Electric Fat Tire Bike with Bafang M615 Mid-Drive System and Hydraulic Disc BrakesHKM 944787 Electric Fat Tire Bike Engineered for the Bold Conquer Any Landscape with Unstoppable Power The HKM 944787 is more than an electric bike it's a purpose built exploration machine. At its heart lies the renowned Bafang M615 mid drive system, delivering seamless torque directly to the crankset for exceptional climbing ability and natural ride feel. Paired with hydraulic disc brakes, a lightweight aluminum frame, and 4 inch fat tires, this e
HKM-944787 Electric Fat Tire Bike
Engineered for the Bold — Conquer Any Landscape with Unstoppable Power
The HKM-944787 is more than an electric bike — it's a purpose-built exploration machine. At its heart lies the renowned Bafang M615 mid-drive system, delivering seamless torque directly to the crankset for exceptional climbing ability and natural ride feel. Paired with hydraulic disc brakes, a lightweight aluminum frame, and 4-inch fat tires, this e-bike thrives where others hesitate: loose sand, packed snow, rocky singletrack, or city potholes. Whether you're commuting off the beaten path or chasing weekend adrenaline, the HKM-944787 provides the perfect blend of range, control, and rugged durability.
Key Features at a Glance
Bafang M615 Mid-Drive Motor
Centralized weight distribution and high-torque output offer a balanced, responsive ride on steep inclines and technical terrain. The mid-drive design leverages the bike's gears for optimal efficiency.
Hydraulic Disc Brakes
Precision stopping power in all conditions — wet, dry, or muddy. Dual-piston calipers and large rotors deliver consistent, fade-resistant braking for confident descents.
Aluminum Alloy Frame
Robust yet lightweight construction provides exceptional durability without sacrificing agility. The geometrically optimized frame enhances handling on long-distance adventures.
26" x 4.0" Fat Tires
Massive footprint and high-volume casing provide flotation over sand, snow, and loose gravel. Aggressive tread pattern ensures grip when you need it most.
Performance & Range That Expands Your Horizon
Battery Intelligence
The integrated 14Ah high-density lithium battery is seamlessly built into the frame, preserving sleek aesthetics and protecting cells from the elements. On a single charge, expect between 19.3 miles (31 km) and 37.3 miles (60 km), depending on assist level, terrain, and rider input. For riders seeking extended exploration, an optional second battery increases total capacity to 17Ah, effectively pushing the range beyond ordinary limits. Smart battery management system (BMS) safeguards against overcharge, over-discharge, and temperature extremes.
Speed & Pedal Assist
With a top speed ranging from 18.6 mph (30 km/h) to 31.1 mph (50 km/h) (depending on local regulations and assist level), the HKM-944787 adapts to both relaxed cruising and spirited trail riding. The 5-level intelligent pedal assist (0–5) lets you dial in exactly the right amount of support — from a pure cycling workout to a near-effortless boost. A torque-sensing bottom bracket ensures power delivery feels natural and proportional to your pedaling force.
Precision Drivetrain & Advanced Suspension
9-Speed Gear System
The 9-speed drivetrain provides a wide gear range to tackle everything from steep climbs to fast flat sections. Smooth, crisp shifting lets you maintain optimal cadence and efficiency no matter the gradient. Combined with the mid-drive motor, you can leverage lower gears for technical ascents and higher gears for maximum speed on open terrain.
Dual Suspension Comfort
The RST GUIDE front fork offers 2.95 inches (75mm) of travel, absorbing bumps and roots with ease, while the KS-388RL rear shock keeps the rear wheel planted and your spine protected. Together, they create a balanced, confidence-inspiring ride quality that reduces fatigue on all-day expeditions.
2.95 in (75 mm)
KS-388RL
Technical Specifications
Terrain Versatility & Build Quality
Designed to defy limitations, the HKM-944787 transforms every surface into a playground. The 4-inch wide tires, mounted on 26-inch rims, create a contact patch that grips loose surfaces tenaciously. Low tire pressure capability (as low as 5 psi) dramatically improves traction and comfort on sand, snow, and mud. The aggressive self-cleaning tread pattern sheds debris as you ride, maintaining consistent performance.
The frame's hydroformed aluminum tubes are meticulously welded and heat-treated for maximum strength-to-weight ratio. Internal cable routing protects shifting and brake lines from the elements while giving the bike a clean, high-end silhouette. Reinforced dropouts and a tapered head tube further bolster rigidity, translating to precise steering and confident cornering at speed.
Every detail has been considered: from the wide, supportive saddle designed for all-day comfort, to the lock-on grips that prevent twisting, to the integrated wiring harness that minimizes clutter. The result is an e-bike that feels as refined as it looks — ready for the commute on Monday and the mountain trail on Saturday.
Frequently Asked Questions
What is the real-world range of the HKM-944787?
Range varies with assist level, rider weight, terrain, and wind. Under typical conditions with mixed pedal assist (level 2-3), you can expect approximately 25–35 miles (40–56 km). The maximum recorded range in ideal eco mode reaches up to 37.3 miles (60 km). Adding the optional second battery can extend this significantly, often beyond 50 miles (80 km).
How does the mid-drive motor compare to a hub motor?
Mid-drive motors like the Bafang M615 drive power through the bike's chain and gears, meaning they leverage the gear ratio for superior hill climbing and efficiency. This provides a more natural riding sensation and better weight distribution compared to hub motors, especially beneficial on steep or technical terrain.
Can the battery be removed for charging?
Yes, the integrated 14Ah battery can be unlocked and removed for convenient indoor charging or security. The optional second battery uses the same mounting interface and can be swapped in seconds.
Is the bike suitable for tall or short riders?
The HKM-944787 frame geometry accommodates a wide range of rider heights, typically from 5'4" to 6'4" (163–193 cm), thanks to an adjustable seatpost and stem. We recommend checking the detailed size chart for exact standover height and reach measurements.
What maintenance does the hydraulic brake system require?
Hydraulic disc brakes are largely self-adjusting. Periodic checks of pad thickness and rotor condition are recommended. Bleeding the system every 12–18 months ensures optimal lever feel and braking power. The mineral oil-based system is resistant to temperature fluctuations.
How does the 5-level pedal assist work?
Level 0 provides no motor assistance — a traditional bike experience. Levels 1 through 5 progressively increase motor output, with Level 5 offering maximum boost for steep climbs or rapid acceleration. A torque sensor measures your pedaling force, delivering power smoothly and intuitively, rather than a simple on/off cadence sensor.
Purchase with Confidence
Experience the pinnacle of electric fat tire engineering — the HKM-944787 awaits your next adventure.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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