36 V 350 W Single-Speed Electric City Bike with C3 LCD
HKM-272467 Single-Speed Electric City Bike
The HKM-272467 strips a city electric bike back to what a commute actually needs. A 350 W rear hub motor, a 374 Wh battery hidden in the down tube, a single-speed chain with no derailleur to knock out of adjustment, and a C3 LCD that shows speed, charge, and assist level. The 6061 forged aluminum frame keeps the whole bike near 40 lb, and 700 x 35c tires roll quickly on city surfaces.
350 W Rear Hub Motor36 V 10.4 Ah / 374 Wh Removable Battery20 mph Top Speed700 x 35c Urban TiresSingle-Speed DrivetrainC3 LCD DashboardMechanical Disc Brakes40 lb Bike Weight
Motor
350 W
500 W peak, 40 N.m torque
Battery
36 V 10.4 Ah
374 Wh lithium pack
Top Speed
20 mph
32 km/h, motor assisted
Range
22-31 mi
35-50 km, varies with assist
Tires
700 x 35c
Smooth urban tread
Load Capacity
265 lb
120 kg rider plus cargo
Overview
It is worth reading the specification of the HKM-272467 from the chassis outward rather than from the motor in. Underneath is a 6061 forged aluminum alloy city frame rated to 265 lb, on 28 in (700c) wheels with 700 x 35c tires, stopped by mechanical disc brakes and running a rigid fork. Those parts decide how the bike behaves; the 350 W drive and the 374 Wh pack decide how far and how fast it goes.
A single-speed drivetrain is the point of this bike, not an omission. There is no derailleur to bend on a bike rack, no cable to stretch, no indexing to drift out of adjustment, and no cassette to wear. The gear ratio is chosen for a natural cadence between roughly 12 and 20 mph, which covers almost all city riding.
The drive system is near-silent brushless rear hub motor, rated 350 W continuous with 500 W available in short bursts and roughly 40 N.m of torque. Energy comes from a 36 V 10.4 Ah lithium pack holding about 374 Wh, which is what sets the working range rather than the motor rating on its own. Rigid alloy fork and Mechanical disc brakes, front and rear, 160 mm rotors handle the mechanical side.
Expect 22-31 mi (35-50 km) from a full charge. The lower figure reflects heavy throttle use, a loaded bike, cold weather, or steep terrain; the upper figure comes from moderate assistance on level ground with the tires at their recommended pressure. Temperatures below 40 F (4 C) temporarily reduce available capacity by 10-20 percent, and it returns as the pack warms up. Charging from empty takes 4-5 hours.
Key Features
350 W Near-silent Brushless rear Hub Motor
Rated 350 W continuous with 500 W available for starts and short climbs, this motor produces about 40 N.m. Sealed bearings and a weather-resistant housing keep grit and spray out of the windings, and the controller limits current to protect the motor when it is working hard at low wheel speed.
36 V 10.4 Ah Lithium Pack (374 Wh)
The pack is built from matched lithium cells behind a battery management system that guards against overcharge, deep discharge, short circuit, and excess temperature while balancing cells on every charge. A full charge takes 4-5 hours.
C3 LCD Dashboard
A high-contrast C3 panel shows live speed, battery gauge, odometer, trip distance, and assist level, and stays readable in direct sunlight. Assist levels, wheel size, units, and backlight are all set from the same three buttons, and controller fault codes appear on screen rather than being signalled by a blinking light.
Mechanical Disc Brakes at Both Ends
Mechanical disc brakes, front and rear, 160 mm rotors. Braking is the system that has to scale with power and weight, and on a 40 lb bike travelling at 20 mph that is not a place to economise. Both levers carry a cut-off switch that removes motor drive the instant either is pulled.
Single-speed Drivetrain
The single-speed drivetrain gives a usable spread of ratios so you can contribute on a climb, hold a comfortable cadence at cruising speed, and ride home under leg power if the pack runs down. Indexed shifting is adjustable at the barrel adjuster without tools.
700 x 35c Tires
Smooth urban tread on sealed-bearing hubs. Pressure changes the character of the bike more than any other adjustment: lower for grip and float on loose ground, higher for lower rolling resistance on pavement. The recommended range is printed on the sidewall.
6061 Forged Aluminum Alloy City Frame
Welds are dressed and the frame is rated for a combined rider and cargo load of 265 lb (120 kg). Cable routing is tidied along the tubes so nothing snags, and the mounting points for the battery, controller, and accessories are integrated rather than clamped on.
Smart BMS on a Removable Pack
The battery management system protects against overcharge, over-discharge, excess temperature, and short circuits, and balances cells during charging. The pack itself lifts out of the down tube with a key so it can be charged at a desk while the bike stays locked outside.
Full Specifications
Model
HKM-272467 | Single-Speed Electric City Bike
Frame Material
6061 forged aluminum alloy city frame with integrated down-tube battery
Motor
350 W (500 W peak) near-silent brushless rear hub motor
System Voltage
36 V
Battery
36 V 10.4 Ah lithium-ion (374 Wh)
Charger
Smart charger with automatic cut-off, 100-240 V input
Charging Time
4-5 hours
Battery Cycle Life
Approximately 800-1000 charge cycles to 80 percent capacity
Top Speed
20 mph (32 km/h)
Range Per Charge
22-31 mi (35-50 km), depending on assist level and terrain
Climbing Grade
Up to 30 percent on firm ground with rider input
Peak Torque
40 N.m
Drivetrain
Single-speed drivetrain with tensioned chain
Brakes
Mechanical disc brakes, front and rear, 160 mm rotors
Suspension
Rigid alloy fork
Tires
700 x 35c, smooth urban tread
Wheels
28 in (700c) alloy rims with stainless spokes
Saddle
Padded saddle with quick-release height adjustment
Display
Backlit LCD with speed, battery gauge, odometer, trip and assist level
Throttle
Twist throttle with motor cut-off brake levers
Lighting
LED headlight and brake-activated tail light
Load Capacity
265 lb (120 kg) rider plus cargo
Bike Weight
40 lb (18 kg) including battery
Recommended Rider Height
5 ft 3 in to 6 ft 3 in (160-190 cm)
Certifications
CE, RoHS, UN38.3 Battery
Battery, Range, and Charging
The 36 V 10.4 Ah pack stores about 374 Wh. Range is set by that figure divided by how much energy the bike uses per mile, and consumption swings widely with assist level, rider weight, tire pressure, and gradient. That is why the quoted band is 22-31 mi (35-50 km) rather than a single number.
A full charge takes 4-5 hours from empty on the supplied smart charger, which tapers current as the pack fills and cuts off automatically. Partial charges do no harm to lithium cells - in fact, keeping the pack between roughly 20 and 90 percent for daily use extends its service life compared with routinely running it flat and filling it to 100 percent.
Tip: Store the pack between 30 and 70 percent charge if the bike will sit unused for more than a month, and top it up every 4-6 weeks. Charging indoors at room temperature gives noticeably better pack life than charging in an unheated garage in winter.
The pack releases with the supplied key so it can be carried indoors and charged at a desk while the bike stays locked outside. Two keys are included. Charging in place works equally well - the port is reachable without removing anything.
Daily Use & Care
- Tire pressure sets the character of the bike more than any other adjustment. Check it before every few rides; 700 x 35c tires lose pressure faster than they look like they should, and a soft tire costs range as well as handling.
- Keep the chain clean and lightly lubricated. Wipe the outside of the links with a rag, apply a drop of lubricant to each roller, then wipe the excess off - lubricant left on the outside of the chain simply collects grit.
- Check brake pad thickness every month or so. Mechanical Disc Brakes should be replaced well before the friction material reaches the backing plate, and squealing under light braking usually means contamination rather than wear.
- Retorque the axle nuts, stem bolts, and handlebar clamp after the first 30 mi and then every couple of months. Electric bikes transmit more load into fasteners than an unpowered bicycle does.
- Rinse mud off with a low-pressure hose or a bucket and sponge. Never point a pressure washer at hub bearings, the motor, the display, or the battery connector; forcing water past a seal is how electrical faults start.
- Charge the pack indoors at room temperature where you can see it, and unplug it once the charger indicates a full charge. Do not leave it connected for days at a time.
- Check spoke tension by squeezing pairs of spokes together every few weeks. A loose spoke on a 28 in (700c) wheel carrying 265 lb of load will let the rim go out of true quickly.
What's in the Box
- 1 x HKM-272467 single-speed electric city bike, approximately 85 percent pre-assembled
- 1 x 36 V 10.4 Ah lithium battery pack with two keys
- 1 x smart charger with regional plug
- 1 x front wheel with axle hardware, pre-trued
- 1 x handlebar and stem assembly with pre-routed cables
- 1 x pedal set, left and right marked
- 1 x tool kit with hex keys, spanner, and pedal wrench
- 1 x illustrated assembly and owner manual with torque figures
Frequently Asked Questions
How much assembly is required out of the box?+
The bike arrives roughly 85 percent assembled. You fit the front wheel, handlebar, pedals, and seatpost, then check brake alignment and torque the fasteners to the figures in the manual. Most people finish in 30-45 minutes with the supplied tools.
What range should I actually expect?+
Between 22-31 mi (35-50 km). Heavy throttle use, a loaded bike, cold weather, and hills push you toward the lower figure; moderate assistance on level ground with correct tire pressure gets you toward the upper one.
How long does a full charge take?+
4-5 hours from empty on the supplied charger. The charger tapers current as the pack fills and cuts off on its own, so it will not overcharge if you leave it connected a little longer than needed.
Is it legal to ride on the road?+
Throttle assistance stops at 20 mph, which places the bike in the Class 2 bracket used across most of the United States. That generally allows use on roads, bike lanes, and many shared paths, but rules vary by state, county, and park district - confirm before you ride.
What rider height does it suit?+
The frame suits riders from 5 ft 3 in to 6 ft 3 in (160-190 cm). Standover and reach matter more than total height, so if you are near the edge of that band, check standover clearance before ordering.
Can I ride it in the rain?+
Yes, in normal wet weather. The electrical connections, controller, and display are sealed against spray. Avoid riding through standing water deep enough to submerge the hub or the battery connector, and do not use a pressure washer to clean it afterwards.
Will a single-speed cope with hills?+
The 350 W motor supplies torque the gearing cannot. On gradients up to about 12 percent the bike climbs on motor power alone, and light pedalling extends range. On sustained steep hills a geared bike is the better tool.
How does the ride feel above 15 mph without gears?+
The ratio is tuned for a comfortable cadence up to about 20 mph. Beyond that you can stop pedalling and let the motor hold speed, or coast. For city distances the simplicity is worth more than the extra ratios.
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.
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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.
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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 Battery374 Wh PackSingle-SpeedSmart BMS40 lb Bike Weight
Why Choose the HKM-272467
36 v 350 w Single-Speed Electric City Bike with C3 LCD
Everything on this bike is chosen around one job. The 350 W motor, the 374 Wh pack, and the 6061 forged aluminum alloy city frame with integrated down-tube battery chassis are matched to each other rather than assembled from whatever was on the shelf, and that is what you feel in the first mile.
Simplicity as a Feature
Fewer moving parts means fewer things to adjust, clean, or replace. A single-speed chain running in a straight line lasts longer than a derailleur chain and needs little more than an occasional wipe and lube.
Two Ways to Ride
Use the assistance to flatten a headwind or a hill, or turn it down and ride under your own power with the motor idle. The single-speed drivetrain means the bike still works as a bicycle when the pack is empty.
Light Enough to Carry Upstairs
Forty pounds is roughly 20-30 lb less than a fat tire electric bike. That is the difference between an electric bike you can keep in a first-floor flat and one that has to live outside.
Cheaper and Quieter Than Driving
A full charge costs a few cents of electricity and covers 22-31 mi. There is no fuel, no oil change, and no exhaust, and the bike is quiet enough to hold a conversation alongside.
Built for Daily Use, Not Just Weekends
Sealed connectors, a weather-resistant display, and shielded cable runs mean the bike copes with being ridden in the wet and left outside a shop. Parts that wear are standard sizes you can source anywhere.
Controls & Indicators
Power Button
On the battery pack; hold it to switch the system on or off. The display wakes with it and shows the current charge level.
Mode Buttons
Up and down step through the assist levels; holding the down button engages walk assist, which moves the bike at a slow pace while you push it.
Throttle
Twist throttle on the right grip with progressive response.
Speedometer
Live speed on the display in mph or km/h, switchable in the settings menu along with wheel size and units.
Battery Gauge
A five-segment gauge on the display, with a voltage readout available in the settings menu for a more precise figure.
Light Switch
Holding the up button switches the headlight, tail light, and display backlight on and off together.
Shifter
Indexed shifter on the right grip controlling the single-speed drivetrain. Ease off the pedals as you shift under motor power.
Pre-Ride Safety Checklist
- Check tire pressure and set it for the surface you plan to ride.
- Squeeze both brake levers; they should firm up well before reaching the grip, and the wheels should not turn with the levers held.
- Confirm the battery is locked into its mount and the connector is fully seated.
- Check that the quick-release levers on the seatpost and wheels are closed and tight.
- Spin each wheel and look for rub against the brake pads or a wobble that suggests a loose spoke.
- Switch the system on and confirm the display shows charge level and no fault code.
- Test the lights, and fit a helmet before you set off.
- Test the assistance at walking pace in a clear space before joining traffic, especially if you are new to the bike.
Quick Troubleshooting
The motor does not engage.+
Confirm the display is on and showing an assist level above zero, then check that the battery is locked in and its connector is fully seated. Squeeze and release both brake levers - a sticking cut-off switch keeps the motor disabled.
Range has dropped noticeably.+
Check tire pressure first; a soft tire is the most common cause. Cold weather accounts for 10-20 percent. If range has fallen permanently by more than about a third, the pack is approaching the end of its useful life.
The brakes squeal.+
Usually contamination rather than wear. Clean the rotors with isopropyl alcohol and a clean rag, and sand the pad faces lightly on fine paper. If the noise continues, the pads have absorbed oil and need replacing.
The chain slips or shifts poorly.+
Turn the barrel adjuster at the shifter a quarter-turn at a time until the chain settles in each gear. If it slips under load in every gear, the chain and sprockets are worn and should be replaced together.
The display shows a fault code.+
Switch the system off, wait ten seconds, and switch it back on; transient codes usually clear. Persistent codes are listed in the manual with their meanings - note the code before contacting support.
The bike pulls to one side under braking.+
One caliper is likely dragging or misaligned. Loosen the caliper mounting bolts, squeeze the lever hard to centre the caliper on the rotor, then retighten while holding the lever.
Certifications & Standards
The HKM-272467 is produced in a facility operating under an ISO 9001 quality management system. The cells and the assembled pack 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
Throttle assistance stops at 20 mph, which places the bike in the Class 2 bracket used across most of the United States. That generally allows use on roads, bike lanes, and many shared paths, but rules vary by state, county, and park district - confirm before you ride. Wear a helmet on every ride and add gloves and eye protection as speed and terrain increase.
- Wear a correctly fitted helmet on every ride.
- Ride within your sight lines and leave room to stop; a 40 lb bike at 20 mph needs more distance than you expect.
- Use the lights in poor visibility, not only after dark.
- Do not carry a passenger unless the frame and seating are designed for one.
- Keep the battery away from heat sources and do not charge a pack that has been dropped, dented, or soaked.
- Use only the supplied charger; a mismatched charger is the most common cause of lithium pack damage.
- Check brakes and tire pressure before each ride.
- Confirm local regulations before riding on public roads or shared paths - class 2 style operation.
HKM-272467 · 350 W (500 W peak) · 36 V 10.4 Ah (374 Wh) · 20 mph top speed · 22-31 mi range · 700 x 35c tires · 265 lb (120 kg) load capacity · 6061 forged aluminum alloy city frame with integrated down-tube battery · rigid fork · mechanical disc brakes. Specifications are provided for reference; actual performance varies with rider weight, terrain, tire pressure, temperature, and riding style. Range figures are measured under moderate assistance on level ground. 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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