Electric Bicycles >>
HKM-1292883 Folding Electric Bike, 500 W Rear Hub Motor, 48 V 12.5 Ah / 600 Wh Battery, 31 mph Top Speed, 7-Speed derailleur
HKM-1292883
500 W 31 mph Folding Electric Bike
The HKM-1292883 is a folding electric bike built on an aluminum alloy frame. A quick-release hinge in the down tube and a folding stem let the bike collapse for a car trunk, a hallway closet, or a commuter train.
Key Features
8 details that make the HKM-1292883 a dependable ride.
500 W Brushless Rear Hub Motor
A 500 W brushless motor (750 W peak) is laced directly into the rear wheel. There is no belt or secondary chain in the drive path, so losses stay low and maintenance comes down to keeping the axle nuts torqued. Peak output is what pulls the bike away from a standing start on a grade with a loaded rack.
48 V 12.5 Ah Lithium Pack (600 Wh)
The pack holds 600 Wh, enough for 31-43 mi of mixed riding between charges. It locks into the frame and lifts out with a key so it can be charged at a desk while the bike stays locked outside. A full charge from empty takes about 5-6 hours; partial top-ups take proportionally less and do no harm to the cells.
Hydraulic Front Suspension Fork with Lockout
The fork damps the impacts that reach the front wheel and can be locked out when you are on smooth pavement and want the energy going into forward motion instead of into fork travel. Preload is adjustable at the crown so heavier and lighter riders can both get sensible sag.
Mechanical Disc Brakes
Cable-actuated calipers squeeze the rotor at each wheel. They are simple to adjust at the roadside with a hex key, pads are inexpensive and widely stocked, and motor cut-off switches in both levers drop drive the instant either lever moves. Expect to take up cable stretch once during the first month.
7-Speed Derailleur Drivetrain
A 7-speed cassette with an index shifter gives usable cadence from walking pace up to the top of the assisted speed range. The gear spread is what lets a heavier rider hold a climb without stalling the motor, and what makes the bike rideable at all once the pack is empty.
20 x 2.125 in Tires
The 20 x 2.125 in tread is a mixed-surface pattern - a centre ridge that rolls quietly on tarmac with shoulder blocks that bite when the bike leans on loose ground. Pressure between 30 and 45 psi covers most riders and surfaces.
LED Headlight and Brake-Activated Tail-Light
Both lights run off the main pack, so there are no coin cells or USB lamps to keep charged. The tail-light brightens whenever either brake lever is pulled, which is the single most useful visibility feature in slow traffic and at dusk.
Folding Frame
A cam-lock hinge in the down tube, a folding stem, and folding pedals bring the bike down to a package that fits a car trunk or a hallway closet. The fold takes under a minute once you have done it twice, and the safety catch on the main hinge has to be released deliberately.
Overview
Built for the ride ahead.
The HKM-1292883 is a folding electric bike built on an aluminum alloy frame. A quick-release hinge in the down tube and a folding stem let the bike collapse for a car trunk, a hallway closet, or a commuter train. The frame is rated for a combined rider-and-cargo load of 330 lb, and the bike itself weighs roughly 58 lb with the battery installed. Power comes from a 500 W brushless rear hub motor (750 W peak). Nominal output is what the motor sustains; the peak figure is what it delivers in short bursts on a climb or pulling away from a stop. Rated torque is about 55 N.m, which is what makes the difference on a loaded start rather than raw wattage. The pack is a 48 V 12.5 Ah lithium pack (600 Wh) and recharges in roughly 5-6 hours from empty. Real-world range is a band, not a number. Throttle-only riding at the top of the speed range lands near the low end of 31-43 mi.
Removable Pack, Charge Anywhere
The removable pack means you can charge indoors and leave the HKM-1292883 where it stands.
Engineered to be the thing you stop thinking about, because it simply works. Restraint is the hardest thing to build, and the easiest thing to feel. The HKM-1292883 pairs a 500 W brushless rear hub motor, 750 W peak, 48 V 12.5 Ah lithium-ion (600 Wh), removable and lockable, a range of 31-43 mi (50-69 km), varies with terrain, rider weight, and assist level, so it is built for real-world rides rather than showroom specs.
Full Specifications
Measurements are shown in US customary units first, with metric equivalents in parentheses.
Battery, Range, and Charging
Up to 31-43 mi (50-69 km) per charge.
The 48 V 12.5 Ah pack stores 600 Wh. For reference, a typical commuter e-bike ships with 400-600 Wh, so this one sits inside that band. Energy capacity, not motor wattage, is what decides whether the bike gets you home, and it is the single specification worth paying attention to when comparing models. Four variables move real-world range more than anything else: how much you pedal, total loaded weight, tire pressure, and terrain. Throttle-heavy riding at the top of the speed range returns close to 31 mi. Moderate pedal-assist on rolling terrain sits mid-band. Steady pedalling at the lowest assist level on flat ground is what produces the 43 mi figure. Temperatures below 40 F (4 C) temporarily reduce available capacity by 10-20 percent; it comes back as the pack warms.
Daily Use & Care
A short routine keeps the ride quiet and the range where it should be.
Check tire pressure weekly and keep it between 30 and 45 psi. Under-inflation is the most common cause of a range complaint and of pinch punctures.
Rinse the frame, rims, and drivetrain with fresh water after riding on salted roads or wet gravel. Road film attacks fasteners and bearing seals if it is left to dry in place.
Check that the axle nuts, stem bolts, and hinge fasteners are torqued before the first ride of each week. Motor torque works hardware loose faster than on a conventional bicycle.
Wipe and re-lubricate the chain every 100-150 mi, or after any ride through standing water or heavy dust.
Check brake cable tension and pad thickness monthly. Cables stretch during the first weeks - take up the slack at the barrel adjuster rather than letting lever travel grow.
Charge indoors at room temperature and unplug once the indicator turns green rather than leaving the charger connected for days at a time.
Keep the display cover and charge-port cap closed whenever the bike is parked outdoors so moisture stays out of the connectors.
What’s in the Box
Everything needed to get riding, right out of the box.
1 x HKM-1292883 Folding Electric Bike
1 x HKM-1292883 folding electric bike
1 x 48 V 12.5 Ah Removable Lithium Battery Pack (600 Wh)
1 x 48 V 12.5 Ah removable lithium battery pack (600 Wh)
1 x Smart Charger with 100-240 V Input
1 x Smart charger with 100-240 V input
2 x Battery Keys
2 x Battery keys
1 x Toolkit with Hex Wrenches and Pedal Spanner
1 x Toolkit with hex wrenches and pedal spanner
1 x Pair of Folding Pedals
1 x Pair of folding pedals
1 x Front LED Headlight (pre-installed)
1 x Front LED headlight (pre-installed)
1 x User Manual
1 x User manual
Why Choose the HKM-1292883
6 reasons it earns its place.
Sized for the Riding You Actually Do
500 W nominal with 55 N.m is the practical middle of the market: enough to flatten a commute-grade hill and hold 31 mph, without the weight, cost, and registration questions that come with the high-output classes.
Surfaces Other Bikes Route Around
A 20 x 2.125 in tread with front suspension fork covers the mixed reality of most rides - tarmac to the edge of town, then packed dirt, gravel shoulders, and the occasional rutted section, all on the same tire.
Two Ways to Ride
Twist the throttle for immediate, clutch-free acceleration, or select one of 5 pedal-assist levels and ride it like a bicycle. Most owners mix the two - throttle away from a stop, assist to hold speed, and pedals to stretch the pack on the way home.
Fewer Parts in the Drive Path
The motor lives inside the wheel hub with no gearbox, belt, or secondary chain to service. Fewer moving parts in the drive path means less to maintain, and the ride is quiet enough to hold a conversation alongside another rider.
Economical to Run
A full charge costs a few cents of electricity and covers 31-43 mi. There is no fuel, no oil change, no annual emissions test, and in most towns no parking fee - the bike locks to the same rack a conventional bicycle uses.
Built for Weather
Sealed connectors, a covered charge port, a gasketed battery bay, and stainless hardware at the fasteners most exposed to road film. Ride it in the rain, rinse the salt off afterwards, and the electrical side stays out of the conversation.
Light, Stiff Alloy Frame
An alloy frame keeps the HKM-1292883 light to lift yet stiff to ride.
Reliability is a feeling first and a number second. Good gear should ask for nothing and give back everything; that is the bar here. The HKM-1292883 pairs a 500 W brushless rear hub motor, 750 W peak, 48 V 12.5 Ah lithium-ion (600 Wh), removable and lockable, a range of 31-43 mi (50-69 km), varies with terrain, rider weight, and assist level, so it is built for real-world rides rather than showroom specs.
Controls & Indicators
What each control on the HKM-1292883 does.
Power Button
On the battery pack; hold to switch the system on and off
Mode Buttons
Up and down keys on the display cycle through 5 pedal-assist levels plus zero assist
Twist Throttle
Right-hand grip; proportional response, independent of the selected assist level
Speedometer
Live speed readout in mph, switchable to km/h in the settings menu
Battery Gauge
5-segment charge indicator plus a percentage readout on the display
Light Switch
Long-press the up key to toggle the LED headlight and tail-light
Shifter
Right-hand index shifter for the 7-speed rear derailleur
Frequently Asked Questions
Quick answers about the HKM-1292883.
How much assembly is required out of the box?
The bike ships approximately 85 percent assembled. What remains is fitting the front wheel, straightening and bolting the handlebar, installing the pedals and saddle, and checking brake alignment. Budget 30-45 minutes with the supplied tools. If you are not comfortable torquing the stem and axle hardware, have a bike shop check it before the first ride.
What range should I actually plan for?
Plan for 31-43 mi (50-69 km). Throttle-heavy riding at the top of the speed range lands near 31 mi; moderate pedal-assist on mixed terrain sits mid-band; steady pedalling at low assist on flat ground produces the 43 mi figure. Rider weight, headwinds, hills, cold weather, and low tire pressure all reduce it.
How long does the battery take to charge?
About 5-6 hours from fully empty with the supplied charger. Partial top-ups take proportionally less time, and there is no benefit to running the pack down before recharging - lithium cells prefer partial cycles.
Is the battery removable for indoor charging?
Yes. It unlocks with the supplied key and lifts out of the frame, so you can charge it indoors while the bike stays locked outside. You can also charge it in place through the frame-side port.
Can I pedal it if the battery runs out?
Yes. The 7-speed derailleur works independently of the motor. The bike weighs about 58 lb, so unassisted pedalling is slower than on a conventional bicycle, but it is entirely rideable home on flat ground.
Do I need a license or registration?
Rules vary by state and locality. A 500 W motor with a 31 mph top speed exceeds the limits of the common three-class e-bike framework in many US jurisdictions, which may place this vehicle in a moped or motor-driven cycle category with registration, license, or insurance requirements. Check your state DMV and local ordinances before riding on public roads or bike paths.
Will the brakes cope with the speed and the load?
Mechanical disc brakes front and rear are the appropriate specification for a 31 mph bike at this weight. Bed the pads in during the first few rides with 10-15 progressive stops from moderate speed to build the friction layer on the rotors, and brake earlier than you would on an unloaded bicycle when the rack is full.
What size rider does it fit?
The recommended range is 5 ft 0 in to 6 ft 2 in (152-188 cm). Saddle height covers most of that range; riders at either end should also check standover clearance, which is set by the 20 in wheel size and the frame geometry.
Quick Troubleshooting
Common issues and what to check first.
The motor does not engage when I ask for assist.
Confirm the display is on and shows charge, the battery is locked fully into place, and both brake levers are released - the cut-off switches disable drive while a lever is pulled. If the display shows an error code, note it before powering down and contact support.
Range has dropped noticeably compared with when it was new.
Check tire pressure first; a soft tire on pavement is the most common cause by a wide margin. Then consider temperature, since cold reduces available capacity temporarily. If range is down more than 30 percent year-round after several hundred cycles, the pack is approaching the end of its service life.
Lever travel has grown and the brakes feel weak.
Cable stretch is normal in the first few weeks. Take up the slack at the barrel adjuster until the pads bite with roughly a third of the lever travel remaining. If adjusting does not restore power, the pads are worn and need replacing.
The chain skips under hard pedalling.
Indexing is most likely out of adjustment, or the chain and cassette are worn. Turn the barrel adjuster a quarter turn at a time until shifts land cleanly. If it skips only in the smallest cogs, the cassette is worn and should be replaced together with the chain.
The front fork rattles or dives over bumps.
Check that the axle and the fork crown bolts are tight and that the wheel is fully seated in the dropouts. If the rattle persists, increase preload at the crown; if the fork dives through its travel under braking, it needs service.
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, write down the exact code and what you were doing when it appeared, then contact support - codes map to specific faults in the controller, motor, throttle, or brake-sensor circuits.
Certifications & Standards
Documented and tested for sale.
CE
European Conformity (CE) marking where applicable for the safety and electrical assembly.
ISO 9001
Quality management system held by the manufacturing facility.
Compliance Docs
Safety and compliance documentation included with every unit on request.
Tested
Each unit is inspected and function-tested before it leaves the warehouse.
From Frame to Wheels
From the frame to the wheels, the HKM-1292883 is built for consistent, confident performance.
The specifications above show exactly what is under the surface, and the ride proves it every time. The HKM-1292883 pairs a 500 W brushless rear hub motor, 750 W peak, 48 V 12.5 Ah lithium-ion (600 Wh), removable and lockable, a range of 31-43 mi (50-69 km), varies with terrain, rider weight, and assist level, so it is built for real-world rides rather than showroom specs.
Pre-Ride Safety Checklist
Run through these before every ride.
Check and set tire pressure before rolling out; it is the fastest change you can make to ride quality and range.
Squeeze both brake levers and confirm the pads contact the rotor with roughly a third of the lever travel remaining. Take up cable stretch at the barrel adjuster if not.
Confirm the battery is seated and locked and that the display shows the state of charge you expect.
Spin both wheels and check that the rims run true and nothing rubs a pad or the frame.
Verify the frame hinge and folding stem are fully closed and that both safety catches are engaged before you put weight on the bike.
Test the assist at walking pace in a clear area before entering traffic, especially if you have changed the assist level or ridden a different bike recently.
Switch on the headlight and tail-light for any ride near dusk, and wear a helmet rated for the speeds this bike reaches.
If you are carrying cargo, load it low and centred and re-check braking distance on the first quiet stretch of road.
Service & Policies
Every HKM-1292883 is backed by coverage designed to protect your investment.
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.
Important Safety Notes
Read before the first ride.
This 500 W bike is rated at 31 mph. Read the manual first and practise throttle and braking in an open, traffic-free area. Leave extra room for braking, since stopping distance grows fast with speed and load. Wear a helmet every ride; a certified downhill or motorcycle helmet is wise at 31 mph. Do not exceed the 330 lb (150 kg) load limit, including rider, cargo, and rack load. Confirm local law before riding on public roads. Bed the brakes in with 10-15 progressive stops over the first rides. Never ride through water deep enough to reach the motor or battery. Charge only with the supplied charger, indoors and attended. Never open, puncture, or modify the pack. Slow down substantially on gravel, wet surfaces, and steep descents.
HKM-1292883 - Folding Electric Bike. Specifications are for reference; actual performance varies with rider, terrain, tire pressure, and temperature. This page describes the product only and is not legal advice regarding vehicle classification - confirm local regulations before riding on public roads.
Every product we offer includes a 180-day purchase protection plan at no additional cost. This coverage extends beyond a standard warranty, reflecting our confidence in product quality and our ongoing commitment to your satisfaction.
The protection plan is designed to provide practical help in real-world situations. Whether you encounter a manufacturing issue, a performance problem, or an unexpected accident, our team is ready to assist with clear, fair solutions.
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Free repair or replacement if the product fails under normal use.
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The 180-day purchase protection includes accidental damage and performance failures that are typically not covered by a standard warranty. It provides an additional layer of support during the first six months after purchase, giving you greater confidence and peace of mind.
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Request a return within 30 days of delivery.
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Refund processed within 10 business days.
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Returns & Exchanges Overview
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Please inspect your order as soon as it arrives. If the item is defective, damaged, or incorrect, contact us immediately so we can evaluate the issue and make it right. For exchanges, the fastest option is to return the original item and place a new order for the replacement.
We believe in the quality of our products, and we want you to share that confidence. Every product is backed by a 24-month warranty covering all structural and functional components, including zippers, buckles, straps, and fabric integrity.
The warranty is designed to be simple and accessible. You only need your proof of purchase to begin a claim, and our team will assess the issue promptly. If a manufacturing issue arises, we will make it right.
What the Warranty Covers
Comprehensive Coverage
Every part warranted for two full years.
Free Repair or Replacement
Whichever is faster, at no cost to you.
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Claims assessed within 1 business day.
Transferable
Warranty follows the product, not the owner.
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Delivery Time Summary
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Step-by-step solutions for product issues.
Contact Information
24/7 Phone
+1 (209) 280-3200
support@hekomart.com
Address
3401 Dale Rd, Modesto, CA 95356
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Available 24 hours a day, 7 days a week
