Retro-Style Electric Cruiser Bike
HKM-0925907 Electric Retro Cruiser Bike
The HKM-0925907 merges vintage cruiser aesthetics with modern electric performance in a 6061 aluminum frame with gracefully curved tubing and a sweeping silhouette. A 48 V rear hub motor delivers smooth acceleration through a torque-sensing pedal assist system that measures your pedaling effort over 1,000 times per second for natural, proportional response. 26-inch wheels with multi-terrain fat tires, hydraulic disc brakes front and rear, a 7-speed Shimano derailleur drivetrain, integrated LED lighting, and a color LCD display complete a bike built for relaxed urban cruising, scenic path rides, and weekend adventures with style.
750 W Rear Hub Motor48 V 17.5 Ah / 840 Wh Pack28 mph Top Speed26 x 4.0 in Fat TiresHydraulic Disc BrakesTorque-Sensor Assist7-Speed DrivetrainAluminum Alloy Frame
Motor
750 W
Rear hub, torque-sensing assist
Battery
48 V 17.5 Ah
840 Wh removable lithium
Top Speed
28 mph
45 km/h, throttle available
Range
45-60 mi
72-96 km, varies with assist
Tires
26 x 4.0 in
Multi-terrain fat tread
Load Capacity
300 lb
136 kg rider plus cargo
Overview
The HKM-0925907 draws its design language from the golden era of cycling — sweeping frame geometry, a curved top tube, and meticulously finished junctions that evoke nostalgia while housing thoroughly modern engineering beneath the surface. The elongated wheelbase provides stability at speed while the relaxed head tube angle delivers an upright, comfortable riding posture ideal for extended journeys through city streets or countryside lanes.
A 48 V rear hub motor sits at the heart of the drivetrain. Unlike mid-drive configurations that introduce additional wear on chains and cassettes, this direct-drive hub configuration delivers power straight to the rear wheel with minimal maintenance. The internal planetary gear reduction multiplies torque at low RPMs for smooth starts on inclines, while the freewheeling clutch disengages when coasting — eliminating magnetic drag and preserving momentum.
What sets this bike apart is the torque-sensing pedal assist system. A precision strain gauge array measures the force you apply to the pedals in real time — sampling at over 1,000 times per second — and commands the motor to deliver proportional assistance. The result is an intuitive riding experience where the bike feels like a natural extension of your body: pedal lightly for gentle cruising, push harder for spirited acceleration.
Power storage is handled by a seamlessly integrated lithium-ion pack available in two capacities. The 17.5 Ah extended-range option stores roughly 840 Wh of energy — enough for 45-60 miles under typical commuting conditions with moderate assist. Both variants use high-quality 21700 cells managed by an intelligent BMS that actively balances cells during charge and discharge cycles, extending service life well beyond industry averages.
Key Features
750 W Rear Hub Motor
A 48 V hub motor delivers smooth acceleration directly to the rear wheel. Internal planetary gear reduction provides strong low-RPM torque for confident hill starts. The freewheeling clutch disengages when coasting so there is no magnetic drag when you are not using the motor.
48 V 17.5 Ah Lithium Pack (840 Wh)
High-quality 21700 cells store approximately 840 Wh of energy. The pack integrates cleanly into the down tube behind a lockable cover and lifts out with a key for indoor charging. A full recharge takes about 4-6 hours with the supplied charger.
Hydraulic Disc Brakes, Front and Rear
Dual-piston hydraulic calipers act on stainless steel rotors at both wheels. The sealed hydraulic system transmits force through incompressible fluid for precise modulation, shorter stopping distances, and consistent performance in wet conditions.
Torque-Sensing Pedal Assist
A strain gauge array measures pedal force over 1,000 times per second and adjusts motor output proportionally. Five assist levels let you dial in support from a subtle tailwind effect to full-power boost. Feels like a natural extension of your own effort.
26 x 4.0 in Multi-Terrain Fat Tires
Wide-profile tires on 26-inch rims roll efficiently on pavement while providing grip on gravel paths and packed dirt. A subtle center ridge reduces rolling resistance on hard surfaces; moderate side knobs add cornering bite off-road.
Comfort-Oriented Frame Geometry
The relaxed head tube angle and elongated wheelbase deliver stable, upright cruising ergonomics. The aluminum frame has enough compliance to absorb road vibration while maintaining the stiffness needed for responsive handling.
Integrated LED Lighting
A classic-style round LED headlight runs off the main battery. An integrated tail-light activates when either brake lever is pulled, adding visibility from behind in traffic and at dusk without separate batteries.
Rear Rack Compatible
Mounting points accommodate a rear rack for panniers, grocery bags, or a small child seat. Combined with the 300 lb load rating, the bike serves as a practical daily rider as well as a weekend cruiser.
Full Specifications
Model
HKM-0925907 | Electric Retro Cruiser Bike
Frame Material
6061 aluminum alloy, hydroformed tubing, internal cable routing
Motor
48 V rear hub motor, 750 W nominal
System Voltage
48 V DC
Battery
48 V 17.5 Ah lithium-ion (840 Wh), removable, BMS protected
Charger
2 A smart charger, 100-240 V input
Charging Time
4-6 hours from empty
Battery Cycle Life
Approximately 800 charge cycles to 80 percent capacity
Top Speed
28 mph (45 km/h)
Range per Charge
45-60 mi (72-96 km), varies with terrain, assist level, and rider weight
Climbing Grade
Up to approximately 15 degrees with pedal assist
Peak Torque
Approximately 65 N.m
Drivetrain
7-speed Shimano derailleur with index shifter, wide-ratio cassette
Brakes
Hydraulic disc brakes, front and rear, dual-piston calipers
Suspension
Hardtail — comfort from frame geometry and tire compliance
Tires
26 x 4.0 in fat tires, multi-terrain tread pattern
Wheels
26 in alloy double-wall rims, stainless steel spokes
Saddle
Wide cruiser saddle with adjustable height
Display
Backlit color LCD: speed, battery level, assist mode, trip distance, odometer
Throttle
Twist-grip throttle plus 5-level torque-sensing pedal assist
Lighting
Round LED headlight, brake-activated tail-light, powered by main battery
Load Capacity
300 lb (136 kg) rider plus cargo
Bike Weight
Approximately 68 lb (31 kg) including battery
Recommended Rider Height
5 ft 4 in to 6 ft 4 in (163-193 cm)
Certifications
CE, RoHS; battery cells UN38.3 tested
Battery, Range, and Charging
The 48 V 17.5 Ah pack stores approximately 840 Wh of energy. Most commuter e-bikes ship with 400-600 Wh packs, so this unit runs 40-110 percent above the usual budget. That headroom supports daily commutes, weekend path rides, and errand runs between charges without careful range planning.
Real-world range depends primarily on how much you pedal and what assist level you select. Under typical commuting conditions with moderate assist (levels 2-3), expect 45-60 miles. Conservative eco-mode use can extend beyond 60 miles. Maximum continuous assist reduces range; the torque sensor efficiency advantage means you typically achieve 10-15 percent greater real-world range than cadence-sensor e-bikes with identical battery capacity. Cold weather below 40 F (4 C) temporarily reduces capacity by 10-20 percent.
Tip: Store the pack between 30 and 70 percent charge if unused for more than a month, and top it up every 4-6 weeks. Charging indoors at room temperature extends pack life considerably compared with outdoor or garage charging.
The pack unlocks with a key-lock mechanism and slides out of the down tube smoothly for indoor charging — particularly convenient for apartment dwellers or during cold weather when room-temperature charging optimizes cell longevity. Two keys are included.
Daily Use & Care
- Check tire pressure before each ride. Run 20-25 PSI on pavement for efficient rolling; drop to 15-20 PSI for gravel or dirt paths.
- Wipe down the frame after riding in rain or on wet roads. The multi-layer anti-corrosion treatment resists road spray but benefits from regular cleaning.
- Inspect axle nuts and stem bolts weekly. Hub-motor torque works fasteners loose faster than conventional bikes.
- Lubricate the chain every 100-150 mi or after riding through water or dusty conditions.
- Check hydraulic brake pad thickness monthly. Replace when friction material is under 1 mm.
- Charge indoors at room temperature. Unplug once the indicator turns green.
- Keep display and charge port covers closed when parked outside to protect connectors from moisture.
What's in the Box
- 1 x HKM-0925907 electric cruiser bike, approximately 85 percent pre-assembled
- 1 x 48 V 17.5 Ah removable lithium battery pack
- 1 x 2 A smart charger with 100-240 V input
- 2 x Battery keys
- 1 x Toolkit with hex wrenches and pedal spanner
- 1 x Pair of folding pedals
- 1 x User manual and assembly guide
Frequently Asked Questions
What is the estimated range on a full charge?+
Under typical commuting conditions with moderate assist (levels 2-3), expect 45-60 miles. The 17.5 Ah extended battery provides this range; actual distance varies with rider weight, terrain, assist level, tire pressure, and temperature. Conservative eco-mode can extend beyond 60 miles.
How does the torque sensor differ from a cadence sensor?+
A cadence sensor detects whether pedals are rotating and engages the motor at a preset level — this can feel abrupt. A torque sensor measures how hard you are pedaling in real time and adjusts motor output proportionally. The result is smoother starts, more natural cruising, and up to 15 percent better energy efficiency.
Is the battery removable for charging?+
Yes. A key-lock mechanism secures the battery within the down tube; unlocking allows it to slide out for indoor charging. A full charge takes about 4-6 hours with the included charger.
What terrain is this e-bike suitable for?+
Designed as a hybrid — equally at home on paved city streets, bike lanes, gravel paths, and well-maintained trails. Not intended for extreme off-road, technical singletrack, or deep sand/mud.
How much assembly is required?+
Ships roughly 85 percent assembled. Fit the front wheel, straighten the handlebar, install pedals and saddle, and check brake alignment. Budget 30-45 minutes with supplied tools.
Is a license or registration required?+
Rules vary by state. A 750 W motor with 28 mph top speed may exceed standard e-bike class limits in some jurisdictions. Check local DMV and ordinances before riding on public roads.
Can I pedal if the battery runs out?+
Yes. The 7-speed Shimano drivetrain works independently of the motor. At approximately 68 lb the bike is heavy but can be pedaled unassisted on flat ground.
How do hydraulic brakes compare to mechanical?+
Hydraulic systems transmit force through incompressible fluid for precise modulation, shorter stopping distances, and consistent wet-weather performance. They self-adjust for pad wear and require infrequent fluid changes rather than cable adjustments.
Service & Policies
Free Shipping on All Orders
Every order ships free. Handling Time: 0-1 business days (Monday to Friday). Transit Time: 2-5 business days (Monday to Friday). A tracking number is emailed as soon as the parcel leaves our warehouse.
180 Days Purchase Protection
Your purchase is protected for 180 days from the delivery date against manufacturing defects and damage in transit. If something arrives wrong, we make it right.
30 Days Money-Back Guarantee
Not completely satisfied? Request a return within 30 days of delivery for a full refund. We keep the process simple and hassle-free.
24 Months Warranty Service
The product is covered by a 24-month warranty from the delivery date against manufacturing defects. Coverage includes parts and labor; normal-wear items are excluded.
CERoHSUN38.3 Battery840 Wh PackHydraulic BrakesTorque SensorAluminum Frame
Why Choose the HKM-0925907
Vintage Style, Modern Performance
Sweeping frame geometry, curved tubing, and a round headlight evoke classic cruiser aesthetics while the 48 V hub motor, torque-sensing assist, and hydraulic brakes deliver genuinely modern performance. Ride with style without sacrificing capability.
Torque Sensing Feels Natural
Unlike basic cadence sensors that switch the motor on and off abruptly, the torque sensor samples pedal force over 1,000 times per second and responds proportionally. The bike amplifies your effort rather than overriding it — a fundamentally different and more satisfying riding experience.
Two Ways to Ride
Use the twist throttle for immediate acceleration from stops, or pedal and let the torque sensor provide seamless assistance that matches your effort level. Five adjustable modes let you choose exactly how much support you want at any moment.
Direct-Drive Simplicity
The motor lives in the rear hub with no mid-drive gearbox, belt, or extra chain to service. Fewer moving parts in the drive path means less maintenance, lower cost of ownership, and a quiet ride that lets you enjoy the journey.
26-Inch Wheel Comfort
The 26-inch diameter rolls over potholes and curbs with composure while remaining compact enough for nimble handling. Decades of 26-inch bike development mean abundant tire options, tubes, and service knowledge wherever you ride.
Corrosion-Resistant Build
Multi-layer anti-corrosion frame treatment, powder-coated finish, sealed hydraulic brake lines, and covered electrical connectors make this bike suitable for daily riding in coastal humidity, road spray, and varied weather conditions.
Controls & Indicators
Power Button
Located on the battery pack or display; hold to switch the system on and off
Mode Buttons
Up and down buttons cycle through 5 torque-sensing assist levels plus zero assist
Twist Throttle
Right-hand grip; proportional response, works independently of pedal-assist level
Speedometer
Live speed readout in mph on the backlit color LCD
Battery Gauge
Percentage readout and segmented bar on the color LCD display
Light Switch
Button or toggle to activate the round LED headlight and integrated tail-light
Shifter
Right-hand index shifter for the 7-speed Shimano rear derailleur
Pre-Ride Safety Checklist
- Check tire pressure: 20-25 PSI for paved commuting, 15-20 PSI for mixed surfaces.
- Squeeze both brake levers. They should firm up well before reaching the grip with no sponginess indicating air in the hydraulic line.
- Confirm the battery is seated, locked, and shows expected state of charge on the display.
- Spin both wheels and check that rims run true and nothing rubs the brake pads or frame.
- Verify quick-release levers and axle nuts are tight, and the headset has no play when rocking the bike with the front brake applied.
- Test the throttle at walking pace in a clear area before riding in traffic.
- Switch on the headlight and tail-light if riding near dusk, and wear a helmet rated for the speeds this bike reaches.
Quick Troubleshooting
The motor does not engage when I twist the throttle.+
Confirm the display is on and shows charge, the battery is locked into place, and both brake levers are fully released — brake cut-off sensors disable the motor while a lever is pulled. If an error code appears, note it and contact support.
Range dropped noticeably compared with when it was new.+
Check tire pressure first — the most common cause. Then consider temperature effects. If range is down more than 30 percent year-round after many charge cycles, the pack may be approaching end of service life.
The brakes feel spongy at the lever.+
Air in the hydraulic line or fluid degradation. Stop riding and have the system bled. Plan a fluid bleed every 2 years or whenever lever feel becomes inconsistent.
The chain skips under hard pedaling.+
Derailleur indexing may be out of adjustment, or the chain and cassette are worn. Adjust the barrel adjuster a quarter turn at a time. If skipping persists only in the smallest cogs, replace cassette and chain together.
The torque assist feels uneven or delayed.+
Check that the torque sensor connector is fully seated. If the issue persists, recalibrate the sensor through the display settings menu per the manual instructions, or contact support.
The display shows an error code and the bike will not move.+
Power off, wait 30 seconds, and switch back on. If the code returns, note the exact code and conditions, then contact support — codes map to specific faults in controller, motor, or throttle.
Certifications & Standards
The HKM-0925907 is produced in a facility operating under an ISO 9001 quality management system. The battery cells and assembled pack carry test documentation normally required for lithium-ion transport and sale.
- CE - European Conformity marking covering the electrical assembly.
- RoHS - Restriction of Hazardous Substances compliance for the electronics.
- UN38.3 - Battery transport safety testing, required for lithium-ion shipping by air, sea, and road.
- MSDS - Material Safety Data Sheet available for the battery pack on request.
- ISO 9001 - Quality management system certification held by the manufacturing facility.
Important Safety Notes
This is an electric bicycle capable of 28 mph. Read the manual fully before the first ride and practice throttle control in an open, traffic-free area until the response feels predictable.
- Wear a helmet on every ride. At 28 mph a certified bicycle helmet is appropriate.
- Do not exceed the 300 lb (136 kg) load capacity, which includes the rider and any cargo.
- Check local law before riding on public roads. A 750 W motor with 28 mph top speed may place this vehicle outside standard e-bike classifications in some jurisdictions.
- Bed in the brake pads with 10-15 progressive stops during the first few rides before relying on them in traffic.
- Do not ride through water deep enough to reach the hub motor or battery compartment.
- Charge only with the supplied charger, indoors, at room temperature, and on a non-flammable surface.
- Do not attempt to open, puncture, or modify the battery pack. Damaged lithium packs can vent and ignite.
- Reduce speed on gravel, wet surfaces, and downhill grades; fat tires add grip but do not eliminate traction risk.
HKM-0925907 · 750 W rear hub motor · 48 V 17.5 Ah lithium (840 Wh) · 28 mph top speed · 45-60 mi range · 26 x 4.0 in fat tires · 300 lb (136 kg) load capacity · 6061 aluminum frame · torque-sensor assist · hydraulic disc brakes · 7-speed Shimano drivetrain. Specifications are provided for reference; actual performance varies with rider weight, terrain, tire pressure, temperature, and riding style. This page describes the product only and is not legal advice regarding vehicle classification - confirm local regulations before riding on public roads.
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.
