Dual-Battery Long-Range Electric Street Bike
HKM-5416659 Electric Street Bike
The HKM-5416659 is a motorcycle-style electric street bike built around two removable 48 V 38 Ah lithium packs and a 2000 W brushless rear hub motor. The twin-pack layout extends riding distance well past a single battery, while the hub motor and twist throttle give immediate, clutch-free acceleration with no pedaling required. A step-over street frame, front suspension fork, disc brakes at both ends, and a two-up saddle make it at home on a city commute, a riverside loop, or a weekend run where you want to carry a passenger.
2000 W Brushless Motor48 V Dual 38 Ah Packs38-50 mph Top SpeedDual Removable BatteryDisc Brakes, Front and RearLED Headlight + Brake LightTwo-Up Saddle150 kg Load Capacity
Motor
2000 W
brushless rear hub drive
Battery
48 V dual
two 38 Ah packs, ~3648 Wh combined
Top Speed
38-50 mph
61-80 km/h
Range
Long range
dual-pack distance, varies with load and speed
Tires
Street tires
road-oriented tread
Load Capacity
330 lb
150 kg rider plus passenger and cargo
Overview
The HKM-5416659 is built as a practical electric street bike rather than a pedal bicycle. Two battery packs sit in the frame so you can ride farther between charges, and the whole bike is sized for an adult rider plus a passenger on the rear pad. The riding position is upright and relaxed, which keeps it manageable in traffic and comfortable on longer loops.
Power comes from a 2000 W brushless rear hub motor fed by the twin 48 V packs. There is no chain to a pedaling crankset and no clutch - the twist throttle delivers smooth, proportional acceleration from a standstill and through the mid-range. Peak output is enough to pull away from intersections and hold a steady cruise on open roads.
Range is the headline feature. Two 38 Ah packs combine for roughly 3648 Wh of stored energy, so even with a passenger and mixed-speed riding you carry a large energy reserve. Real-world distance drops with higher sustained speed, headwinds, and added weight, and rises when you ride at a steady moderate pace; plan your trips around the lower end of the estimate and you will rarely be caught short.
Ride hardware is chosen for everyday use. A front suspension fork and rear twin shocks take the edge off broken pavement, disc brakes at both wheels provide consistent stopping power, and an LED headlight with a brake- activated tail light keeps you visible at dusk. The low seat and flat footrests make mounting, dismounting, and passenger carrying straightforward.
Key Features
2000 W Brushless Rear Hub Motor
A 2000 W brushless motor is laced into the rear wheel hub. With no chain or belt between the motor and the ground, drive losses stay low and there is little to maintain beyond keeping the axle nuts torqued. The motor pulls away cleanly from a stop and holds cruising speed on open roads.
Dual 48 V 38 Ah Removable Packs (~3648 Wh)
Two lockable packs sit in the frame and lift out with a key for indoor charging. Combined they store roughly 3648 Wh, which is what gives the HKM-5416659 its long-range character. A full recharge from empty takes several hours on the supplied charger; partial top-ups take proportionally less.
Front Fork and Rear Twin Shocks
A telescopic front fork smooths broken pavement and expansion joints, while twin rear shock absorbers absorb the larger hits reaching the rear wheel. Together they keep the bike composed on city streets and light back roads without a heavy full-suspension linkage.
Disc Brakes, Front and Rear
Disc brakes at both wheels give predictable, fade-resistant stopping power in dry and wet conditions. Motor cut-off levers disengage drive the instant either brake is pulled, which is a meaningful safety feature on a 38-50 mph street bike.
Chain Final Drive, No Pedaling Required
The motor drives the rear wheel through a simple chain final drive, so there are no pedals to turn and no derailleur to index. The bike is ridden throttle-only; this also keeps the foot area clear for a passenger and simplify long-term maintenance.
Street-Profile Tires
Road-oriented tires are sized for stable handling on pavement and packed surfaces, with enough tread to cope with the occasional gravel path or worn shoulder. Lower pressures soften the ride; higher pressures reduce rolling resistance for longer range.
LED Headlight and Integrated Brake Light
A bright LED headlight runs off the main packs so there are no separate batteries to keep charged. A tail light that illuminates whenever either brake lever is pulled adds visibility from behind - useful in traffic and at dusk.
Two-Up Saddle with Rear Passenger Pad
A wide saddle with a rear passenger pad accommodates an adult rider plus a passenger; integrated footrests keep their feet clear of the wheel. A rear rack underneath the pad carries a backpack or small cargo within the rated load.
Full Specifications
Model
HKM-5416659 | Electric Street Bike
Frame Material
Alloy street frame (manufacturer spec not published; alloy construction assumed)
Motor
2000 W brushless rear hub motor
System Voltage
48 V DC
Battery
Two 48 V 38 Ah lithium-ion packs (76 Ah total, ~3648 Wh combined), removable and lockable
Charger
Smart charger, 100-240 V input (supplied)
Charging Time
Approximately 6-8 hours per pack from empty (estimated)
Battery Cycle Life
Approximately 800 charge cycles to 80 percent capacity (typical)
Top Speed
38-50 mph (61-80 km/h)
Range Per Charge
Extended range from dual packs; estimated up to 90 mi depending on speed, load, and terrain (to be confirmed)
Climbing Grade
Up to approximately 25 degrees (estimated)
Peak Torque
High-torque brushless motor with strong low-speed output
Drivetrain
Chain final drive to rear wheel, throttle-only (no pedals)
Brakes
Disc brakes, front and rear, with power-off levers
Suspension
Telescopic front fork + twin rear shock absorbers
Tires
Street-profile tires, road-oriented tread (size per build)
Wheels
Alloy rims with stainless spokes
Saddle
Two-up saddle with rear passenger pad and footrests
Display
Digital speedometer with battery-level and trip readout
Throttle
Twist-grip throttle, proportional response
Lighting
LED headlight, brake-activated tail light, powered by main battery
Load Capacity
330 lb (150 kg) rider plus passenger and cargo
Bike Weight
Approximately 150 lb (68 kg) including battery (estimated)
Recommended Rider Height
5 ft 4 in to 6 ft 2 in (163-188 cm, estimated)
Certifications
CE, RoHS; battery cells UN38.3 tested
Battery, Range, and Charging
The HKM-5416659 carries two 48 V 38 Ah lithium packs. On their own each pack stores about 1824 Wh, and together they hold roughly 3648 Wh of energy - substantially more than a typical single-pack commuter bike. That headroom is what lets the bike cover long distances and still carry a passenger without constant charging stops.
Real-world range depends on speed, rider and passenger weight, tire pressure, and terrain. Steady moderate-speed riding returns the longest distance; sustained top-speed running with a passenger shortens it considerably. Cold weather below 40 F (4 C) temporarily reduces available capacity by 10-20 percent and it returns once the pack warms up.
Tip: Store each pack between 30 and 70 percent charge if the bike will sit unused for more than a month, and top up every 4-6 weeks. Charging indoors at room temperature extends usable pack life compared with charging in an unheated garage.
Both packs unlock with the supplied key and lift out of the frame in a few seconds, so you can charge them at a desk while the bike stays locked outside. Two keys are included. Charging with the packs installed works equally well through the frame-side charge port.
Daily Use & Care
- Check tire pressure before each ride and set it for your route: higher pressure for pavement and range, lower for light gravel comfort.
- Rinse the frame, rims, and drivetrain with fresh water after riding on salted roads or wet gravel.
- Confirm both axle nuts and the stem bolts are torqued before the first ride of each week. Hub-motor torque works fasteners loose faster than on a conventional bike.
- Lubricate the drive chain every 100-150 mi, or after any ride through standing water or dusty conditions.
- Inspect brake pad thickness monthly and replace when the friction material is under 1 mm.
- Charge indoors at room temperature and unplug the charger once the indicator turns green rather than leaving it connected for days.
- Keep the display and charge port covers closed when parked outside so moisture stays out of the connectors.
What's in the Box
- 1 x HKM-5416659 electric street bike, approximately 85 percent pre-assembled
- 2 x 48 V 38 Ah removable lithium battery packs
- 1 x Smart charger with 100-240 V input
- 2 x Battery keys
- 1 x Toolkit with hex wrenches and basic spanners
- 1 x Pair of mirrors (where required by local law)
- 1 x Front and rear lighting set (pre-installed)
- 1 x User manual and assembly guide
Frequently Asked Questions
How much assembly is required out of the box?+
The bike ships approximately 85 percent assembled. Remaining steps are fitting the front wheel, straightening and bolting the handlebar, installing the mirrors and saddle, and checking brake alignment. Budget 30-45 minutes with the supplied tools. Have a shop check torque and brake bedding if you are not comfortable doing it yourself.
Can two people ride this bike together?+
Yes, within the 330 lb total load rating. The rear pad is sized for an adult passenger and integrated footrests keep their feet clear of the wheel. Real-world range with a passenger drops compared with a solo rider, so plan shorter loops or carry the charger on day trips.
What range should I plan for?+
Plan for extended range from the dual packs, with the lower end of the estimate as your planning figure. Higher sustained speeds, a passenger, headwinds, and hills all reduce distance; steady moderate-speed riding extends it. Confirm the exact figure with the published spec sheet.
Is a license or registration required?+
Rules vary by state and locality. A 2000 W motor with 38-50 mph top speed exceeds the limits of the common three-class e-bike framework in many US jurisdictions and may place this bike in a moped or motorcycle category. Check your state DMV and local ordinances before riding on public roads.
How long does the battery take to charge?+
About 6-8 hours per pack from fully empty with the supplied charger (estimated). Partial top-ups take proportionally less time; there is no need to run a pack down before recharging.
Do I need to pedal this bike?+
No. The HKM-5416659 is throttle-only with a chain final drive and no pedals. The twist throttle provides all propulsion, which keeps the foot area clear for a passenger.
Will the brakes handle the speed and a passenger?+
Disc brakes front and rear are the appropriate specification for a 38-50 mph bike of this weight. Bed the pads in during the first few rides with 10-15 progressive stops from moderate speed. With a passenger, brake earlier than you would solo.
Are the battery packs removable for indoor charging?+
Yes. Each pack unlocks with the supplied key and lifts out of the frame. You can also charge them in place through the frame-side charge port.
Service & Policies
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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.
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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 BatteryDual 48V PacksDisc BrakesTwo-Up SaddleLED Lighting
Why Choose the HKM-5416659
Twin Packs, Real Range
Two 48 V 38 Ah packs give the HKM-5416659 a large energy reserve, so you can commute, explore, and still carry a passenger without watching the gauge all afternoon. One pack as backup also means less range anxiety on longer days out.
Composed on Real Roads
A front fork and rear twin shocks absorb potholes, expansion joints, and rough shoulders that a rigid frame would transmit straight to the rider. The bike stays composed on city streets and light back roads.
Throttle-Only Simplicity
Twist the throttle for immediate, motorcycle-style acceleration with no pedaling, no gears to shift, and no clutch. The simple chain final drive means fewer parts to maintain and a quiet, predictable ride.
Direct-Drive Quiet
The motor lives in the rear hub with no mid-drive gearbox or extra chain to service. Fewer moving parts in the drive path means less to maintain and a notably quiet ride in traffic and on quiet streets.
Two-Up Ready
A wide two-up saddle, a rear passenger pad, and footrests turn this into a practical machine for rider-plus-passenger trips rather than a solo toy. Loads stay within the 330 lb rating for stable handling.
Built for Daily Use
Sealed electrical connectors, lockable battery compartments, and disc brakes that perform in the wet all make sense for a bike ridden to work every day and parked outside.
Controls & Indicators
Power Button
Located on the battery pack; hold to switch the system on and off
Mode Buttons
Display buttons cycle through speed, trip, and battery readouts
Twist Throttle
Right-hand grip; proportional response, works independently of assist
Speedometer
Live speed readout in mph, switchable to km/h in the settings menu
Battery Gauge
Charge indicator plus percentage readout on the display
Light Switch
Toggle the LED headlight and integrated brake light from the display
Handlebar Controls
Mirror and brake-lever position adjust for rider reach and comfort
Pre-Ride Safety Checklist
- Check tire pressure and set it for your route: higher for pavement and range, lower for light gravel comfort.
- Squeeze both brake levers. They should firm up well before reaching the grip, with no sponginess.
- Confirm both packs are seated and locked, and that the display shows the expected state of charge.
- Spin both wheels and check that the rims run true and nothing rubs the brake pads or the frame.
- Verify the axle nuts are tight and the headset has no play when you rock the bike with the front brake applied.
- Test the throttle at walking pace in a clear area before riding in traffic or with a passenger.
- Switch on the headlight and tail light if riding near dusk, and wear a helmet rated for the speeds this bike reaches.
- If carrying a passenger, confirm both footrests are deployed before they mount the rear pad.
Quick Troubleshooting
The motor does not engage when I twist the throttle.+
Confirm the display is on and shows charge, both packs are locked into place, and both brake levers are fully released - brake cut-off sensors disable the motor while a lever is pulled. If the display shows an error code, note it and contact support.
Range dropped noticeably compared with when it was new.+
First check tire pressure; a soft tire on pavement is the most common cause. Then consider temperature - cold reduces available capacity temporarily. If range is down more than 30 percent year-round after many charge cycles, a pack may be approaching the end of its service life.
The brakes feel spongy at the lever.+
Sponginess in a braking system usually means air in the line or a fluid leak. Stop riding and have the system inspected. Do not continue riding a 38-50 mph bike on compromised brakes.
The chain makes noise or skips under load.+
The drive chain may need lubrication or tension adjustment. Clean and lube it, then check tension. If it skips only under hard acceleration, inspect the rear sprocket for wear and replace if needed.
The front fork rattles over bumps.+
Check that the front wheel is seated in the dropouts and the axle is tight. If the rattle persists, the fork may need service - inspect the stanchions for scoring and have a shop rebuild the lowers if needed.
The display shows an error code and the bike will not move.+
Power the system off, wait 30 seconds, and switch it back on. If the code returns, note the exact code and the conditions that produced it, then contact support - error codes map to specific faults in the controller, motor, or throttle circuits.
Certifications & Standards
The HKM-5416659 is produced in a facility operating under an ISO 9001 quality management system. The battery cells and the assembled packs carry the 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 a high-output electric street bike capable of 38-50 mph. Read the manual fully before the first ride and practice throttle control in an open, traffic-free area until the response feels predictable. If you will be carrying a passenger, practice solo first - loaded braking distances are noticeably longer.
- Wear a helmet on every ride. At 38-50 mph a bicycle helmet is the minimum; many riders choose a certified motorcycle or downhill helmet at these speeds.
- Do not exceed the 330 lb (150 kg) load capacity, which includes the rider, any passenger, and cargo.
- Check local law before riding on public roads or paths. A 2000 W motor with 38-50 mph top speed may place this vehicle outside standard e-bike classifications in your area.
- Bed in the brake pads with 10-15 progressive stops during the first few rides before riding at full speed or with a passenger.
- Do not ride through water deep enough to reach the hub motor or the battery compartments.
- Charge only with the supplied charger, indoors, at room temperature, and on a non-flammable surface. Do not leave a charging battery unattended overnight.
- Do not attempt to open, puncture, or modify the battery packs. Damaged lithium packs can vent and ignite.
- Reduce speed substantially on gravel, wet surfaces, and downhill grades; tires add grip but do not eliminate the risk of losing traction.
HKM-5416659 · 2000 W brushless rear hub motor · dual 48 V 38 Ah lithium (~3648 Wh) · 38-50 mph top speed · long-range dual-pack layout · disc brakes · two-up saddle · 330 lb (150 kg) load capacity · alloy street frame · LED headlight and brake light. Specifications are provided for reference; some values are estimated where the manufacturer did not publish a measured datasheet. 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.
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