Engineered for the Urban Explorer

The HKM-893139 redefines city mobility by merging muscular fat tires with a sophisticated electric drive system. Its sturdy steel frame and 20-inch wheels absorb road imperfections, while the rear‑hub motor delivers immediate, whisper‑quiet acceleration. Whether you're cutting through downtown traffic or venturing onto gravel paths, this e‑bike provides unwavering confidence and comfort.

Every design choice — from the integrated smart module to the hydraulic braking — reflects a commitment to safety, durability, and pure riding enjoyment. The wide, puncture‑resistant tires offer exceptional grip on wet pavement and loose surfaces alike, making the HKM-893139 a true all‑season companion.

Key Features at a Glance

Performance That Moves You

The heart of the HKM-893139 is its rear‑hub motor, tuned for urban responsiveness. With over 73.8 lb-ft (100 Nm) of torque, you'll accelerate from standstill to cruising speed in seconds — even on inclines up to 15°. The motor's efficiency is optimized through a sinusoidal controller that reduces noise and vibration, letting you enjoy the city soundscape.

Five levels of pedal assist plus a walk‑assist mode give you complete control. In throttle mode (where regulations permit), the bike becomes a nimble runabout for quick errands. The 7‑speed drivetrain works in harmony with the electric system, allowing you to find the ideal cadence whether you're spinning up a bridge or sprinting down a greenway.

Endurance Without Compromise

The 52 V 60 Ah lithium‑ion pack is one of the most substantial in its class. Using automotive‑grade 21700 cells, the battery delivers consistent voltage even below 20% charge, so you never experience abrupt power drop‑off. A full charge provides over 37 miles (60 km) in mixed assist mode, and the removable design lets you charge conveniently at home, at the office, or anywhere with a standard outlet.

Regenerative braking is not featured, keeping the drivetrain simple and reliable. The intelligent battery management system (BMS) actively monitors cell balance, temperature, and short‑circuit protection, extending the overall lifespan well beyond 800 charge cycles while retaining 80% capacity.

Connected Intelligence

Integrated Bluetooth® 5.0 links the bike to your smartphone via the HKM Ride app (iOS and Android). View real‑time speed, distance traveled, estimated range, and battery health on a clean, intuitive dashboard. The app also provides over‑the‑air firmware updates, ensuring your bike's performance and features evolve over time.

A backlit LCD display on the handlebar shows essential ride data at a glance: current speed, assist level, battery meter, and odometer. Auto‑dimming adjusts to ambient light, so you stay informed without distraction, day or night.

Safety by Design

Stopping power is paramount on any e‑bike. The HKM-893139 employs dual‑piston hydraulic disc brakes with 180 mm front and 160 mm rear rotors. The mineral‑oil system requires minimal maintenance and delivers consistent bite, wet or dry. Integrated brake‑light functionality automatically activates the rear LED when decelerating, alerting traffic behind you.

Reflective sidewall stripes on the fat tires enhance lateral visibility, while the integrated 80‑lux headlight illuminates the path ahead with a wide, even beam pattern. A programmable horn offers friendly alerts to pedestrians, completing a comprehensive safety suite.

All‑Day Comfort and Control

Fat tires aren't just for looks — the 20" × 4.0" CST rubber runs at lower pressure (20‑30 PSI), acting as natural suspension that soaks up potholes and curbs. Combined with a padded, ergonomic saddle and adjustable stem, the riding position remains upright and relaxed, reducing strain on wrists and lower back during long commutes.

The wide handlebar offers stable steering geometry, while lock‑on grips prevent twisting. Even after hours in the saddle, you'll arrive fresh and ready for whatever comes next.

Technical Specifications

Frequently Asked Questions

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