AWD Fat Tire E-Bike with Twin 350 W Geared Hubs
HKM-600147 All-Wheel-Drive Electric Fat Tire Bike
The HKM-600147 runs a 700 W dual-motor Bafang drivetrain (1000 W peak) on a 48 V 15 Ah pack storing 720 Wh. That combination is good for 25 mph (40 km/h) flat out and 28-50 mi of real-world range. The chassis pairs a 6061 aluminum alloy frame with a lockable front suspension fork and Tektro mechanical disc brakes, front and rear, and rolls on Kenda 26 x 4.0 in. Peak torque at the wheel is 70 N.m, enough for a grade of roughly 30 degrees with a solo rider.
700 W Motor (1000 W Peak)48 V 15 Ah / 720 Wh Pack25 mph Top Speed28-50 mi RangeKenda 26 x 4.0 in TiresMechanical Disc Brakes7-Speed Shimano350 lb Load Capacity
Motor
700 W
1000 W peak, dual drive
Battery
48 V 15 Ah
720 Wh LG lithium
Top Speed
25 mph
40 km/h, throttle only
Range
28-50 mi
45-80 km, varies with assist
Tires
26 x 4.0 in
Kenda casing, multi-surface
Load Capacity
350 lb
158 kg rider plus cargo
Overview
The HKM-600147 is a all-wheel-drive electric fat tire bike built around a 6061 aluminum alloy frame. Twin hub motors deliver 70 N.m at the wheel, which is what moves the bike away from a stop and keeps it climbing when the road tilts up - the rated grade is roughly 30 degrees with a solo rider. The 6061 aluminum alloy frame is rated for 350 lb of rider, passenger gear and cargo combined.
Energy comes from a 48 V 15 Ah lithium pack built on LG cells, 720 Wh in total. It charges in 5-6 hours from empty on the supplied smart charger and can be topped up on or off the bike. Cells of this grade hold roughly 80 percent of their original capacity after about 800 full cycles with sensible charging habits.
Range is a band rather than a number because it tracks how you ride. Throttle-only at higher speed lands near the bottom of the 28-50 mi window; moderate pedal-assist on mixed terrain sits in the middle; light assist with steady pedalling on level ground reaches the top. Cold below 40 F (4 C), soft tires, headwind and steep terrain all pull the number down, and it comes back when conditions improve.
Chassis hardware matches the drivetrain. The lockable front suspension fork takes the edge off broken pavement and trail chatter, Tektro mechanical disc brakes, front and rear bring the bike down from 25 mph without fade, and Kenda 26 x 4.0 in tires spread the load over a wide contact patch. A 7-Speed Shimano derailleur lets you contribute pedal power across the whole speed range.
Key Features
Twin Bafang Hub Motors, 700 W Combined
Two geared hub motors, one in each wheel, split a combined 700 W nominal and 1000 W peak output. Driving both wheels puts power down on loose gravel, wet grass and sand where a single rear motor would spin up. There is no chain or belt in the drive path, so maintenance comes down to keeping the axle nuts torqued.
1000 W Peak for Passing and Launches
Nominal output tells you what the motor will hold all day; peak output tells you what it can do for the ten seconds that matter. 1000 W on tap covers pulling away from a light ahead of traffic, cresting a short ramp without downshifting, and holding 18 mph into a headwind.
48 V 15 Ah LG Lithium Pack (720 Wh)
LG cells are used for their energy density and cycle life. The pack locks into the frame, lifts out with a key for indoor charging, and refills in 5-6 hours from empty. 720 Wh is enough for several days of commuting between charges.
70 N.m of Wheel Torque, 30 Degree Rated Grade
Torque, not watts, is what a hill actually asks for. At 70 N.m the drivetrain pulls a solo rider up a grade of about 30 degrees without stalling or cooking the controller. Heavier riders and loaded cargo cut into that figure, and dropping a gear on the 7-Speed Shimano derailleur restores most of it.
Tektro Mechanical Disc Brakes
Cable-actuated Tektro calipers on both wheels are simple to adjust at the roadside and easy to service with basic tools. Power-off levers cut motor drive the instant either lever moves.
7-Speed Shimano Drivetrain
A 7-Speed Shimano derailleur gives usable cadence from walking pace up to cruising speed. The spread of ratios is what lets a heavier rider climb the rated grade under pedal power instead of leaning on the motor and draining the pack.
Kenda 26 x 4.0 in Tires
Kenda casings in 26 x 4.0 in spread rider and cargo weight over a large footprint. Run 15-20 psi on pavement for lower rolling resistance, or drop to 10-12 psi so the tire can flatten out and grip gravel, dirt, sand and packed snow. The wide profile also damps small vibration the suspension never sees.
Lockable Front Suspension Fork
A hydraulic fork with mechanical lockout smooths broken pavement and gravel when open, and firms up for efficient pedalling on smooth roads when locked. Most riders on mixed surfaces simply leave it open.
Full Specifications
Model
HKM-600147 | All-Wheel-Drive Electric Fat Tire Bike
Frame Material
6061 aluminum alloy, tire geometry, 350 lb load rated
Motor
700 w dual-motor bafang drivetrain (1000 w peak)
System Voltage
48 V DC
Battery
48 V 15 Ah LG lithium-ion (720 Wh), removable and lockable
Charger
Smart charger, 100-240 V input
Charging Time
5-6 hours from empty
Battery Cycle Life
Approximately 800 charge cycles to 80 percent capacity
Top Speed
25 mph (40 km/h)
Range Per Charge
28-50 mi (45-80 km), varies with terrain, rider weight and assist level
Climbing Grade
Up to approximately 30 degrees with a solo rider
Peak Torque
70 N.m
Drivetrain
7-Speed Shimano derailleur with index shifter
Brakes
Tektro mechanical disc brakes, front and rear, power-off cut-off levers
Suspension
Lockable front suspension fork
Tires
26 x 4.0 in Kenda all-terrain tread
Wheels
26 in double-wall alloy rims, stainless spokes
Saddle
Padded saddle with adjustable seat post
Display
Backlit LCD: speed, battery level, assist mode, trip distance, odometer
Throttle
Twist-grip throttle with 5 pedal-assist levels and zero assist
Lighting
LED headlight and brake-activated tail-light, powered by the main pack
Load Capacity
350 lb (158 kg) rider plus cargo
Bike Weight
Approximately 74 lb (33 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 15 Ah pack stores 720 Wh on LG cells. For reference, a mainstream commuter e-bike ships with 400-600 Wh, so this pack carries a comparable energy budget. That headroom is what lets you ride a full commute without watching the gauge.
Four variables move real-world range more than anything else: how much you pedal, total load, tire pressure and terrain. Throttle-only at speed sits near 28 mi. Moderate pedal-assist on mixed ground returns roughly 39 mi. Light assist with steady pedalling on the flat reaches 50 mi. Temperatures below 40 F (4 C) temporarily trim 10-20 percent of usable capacity, which returns once the pack warms up.
Tip: Store the pack between 30 and 70 percent charge when the bike will sit for more than a month, and top it up every 4-6 weeks. Charging indoors at room temperature rather than in an unheated garage measurably extends usable pack life.
The pack unlocks with the supplied key and lifts out of the frame in a few seconds, so it can charge at a desk while the bike stays locked outside. Two keys are included. Charging in place through the frame-side port works equally well and takes the same 5-6 hours.
Daily Use & Care
- Set tire pressure for the surface: 15-20 psi on pavement for lower rolling resistance, 10-12 psi on gravel, sand or snow so the Kenda casing can flatten and grip.
- Rinse the frame, rims and drivetrain with fresh water after riding on salted roads or wet gravel. Road film attacks alloy fasteners if it is left in place.
- Check axle nuts and stem bolts before the first ride of each week. A 70 N.m hub drive works fasteners loose faster than a conventional bicycle does.
- Wipe and re-lubricate the chain every 100-150 mi, or after any ride through standing water or heavy dust.
- Inspect pad thickness monthly. Disc pads wear quietly until they are gone; replace them once the friction material is under 1 mm.
- Charge indoors at room temperature and unplug once the charger indicates a full pack rather than leaving it connected for days.
- Keep the display and charge-port covers closed when the bike is parked outdoors so moisture stays out of the connectors.
What's in the Box
- 1 x HKM-600147 all-wheel-drive electric fat tire bike, approximately 85 percent pre-assembled
- 1 x 48 V 15 Ah removable lithium battery pack (720 Wh)
- 1 x Smart charger with 100-240 V input
- 2 x Battery keys
- 1 x Toolkit with hex wrenches and pedal spanner
- 1 x Pair of pedals
- 1 x User manual and assembly guide
Frequently Asked Questions
How much assembly is required out of the box?+
The bike arrives roughly 85 percent assembled. What is left is the front wheel, straightening and bolting the handlebar, pedals, saddle height and a brake alignment check. Budget 30-45 minutes with the supplied tools, or have a bike shop confirm torque and bed the pads if you would rather not.
What range should I actually plan for?+
Plan on 28-50 mi. Throttle-only riding at higher speed lands near 28 mi; moderate pedal-assist on mixed ground returns around 39 mi; light assist on level pavement reaches 50 mi. Rider weight, headwind, hills and low tire pressure all pull the figure down.
How long does a full charge take?+
About 5-6 hours from empty on the supplied charger. Partial top-ups take proportionally less; there is no need to run the pack down before plugging in, and no memory effect to manage.
Is the battery removable for indoor charging?+
Yes. It unlocks with the supplied key and lifts out of the frame. You can also charge it in place through the frame-side port without removing anything.
Is a license or registration required?+
Rules vary by state and locality. A dual-motor motor with a 25 mph top speed exceeds the limits of the common three-class e-bike framework in many US jurisdictions, which can place the bike in a moped or motor-driven cycle category. Check your state DMV and local ordinances before riding on public roads or bike paths.
Can I still pedal it if the battery runs flat?+
Yes. The 7-Speed Shimano derailleur works independently of the motor. At roughly 74 lb the bike is heavy for unassisted pedalling, so it is slow going, but it is entirely rideable home on level ground.
Will the brakes cope with the speed and the load?+
Tektro mechanical disc brakes, front and rear are the appropriate specification for a 74 lb bike at 25 mph carrying up to 350 lb. Bed the pads in with 10-15 progressive stops from moderate speed over the first rides, and brake earlier than you would on an unloaded bike.
How steep a hill will it climb?+
Roughly 30 degrees with a solo rider, using 70 N.m of wheel torque. Add a passenger or heavy cargo and that figure drops; dropping to a lower gear on the 7-Speed Shimano derailleur and pedalling through the climb recovers most of it.
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CERoHSUN38.3 Battery720 Wh Pack700 W MotorDisc BrakesFront Suspension7-Speed Shimano
Why Choose the HKM-600147
1000 W Where It Counts
Peak output of 1000 W and 70 N.m of torque turn a standing start into a confident launch and a 30 degree ramp into an ordinary piece of road. That headroom is what keeps the bike composed when it is loaded.
720 Wh of Usable Energy
A 48 V 15 Ah LG pack covers 28-50 mi per charge, so a typical commuter plugs in once or twice a week rather than every night. Charging takes 5-6 hours from empty and can be done with the pack in or out of the frame.
Suspension Tuned for Real Roads
Potholes, expansion joints, brick lanes and gravel shortcuts become rideable when the lockable front suspension fork absorbs what a rigid frame would send straight to your hands and back.
Braking Sized for 25 mph
Tektro mechanical disc brakes, front and rear are the correct specification for a 74 lb bike travelling at 25 mph. Bed the pads in over the first few rides with 10-15 progressive stops and the lever feel stays consistent for the life of the pads.
Twin-motor traction
Driving both wheels means the front tire pulls while the rear pushes. On wet leaves, loose gravel or a sandy trail entrance that is the difference between hooking up and spinning. Either motor can also be switched off to save energy on smooth tarmac.
Fit and Load Headroom
A recommended rider height of 5 ft 4 in to 6 ft 4 in (163-193 cm) and a 350 lb combined load rating mean the bike is not at its limit with a full-size adult, a loaded pannier and a week of groceries on board.
Controls & Indicators
Power Button
On the battery pack; hold to switch the system on and off
Mode Buttons
Up and down buttons cycle 5 pedal-assist levels plus zero assist
Twist Throttle
Right-hand grip; proportional response, independent of assist level
Speedometer
Live readout in mph, switchable to km/h in the settings menu
Battery Gauge
5-segment charge indicator plus percentage readout on the LCD
Light Switch
Long-press the up button to toggle the headlight and tail-light
Shifter
Right-hand index shifter for the 7-Speed Shimano derailleur
Pre-Ride Safety Checklist
- Set tire pressure for the terrain: 15-20 psi for pavement, 10-12 psi for gravel, sand or snow.
- Squeeze both brake levers. They should firm up well before the grip, with no sponginess that would indicate air in the line or a stretched cable.
- Confirm the battery is seated and locked and that the display shows the charge you expect.
- Spin both wheels and check the rims run true with nothing rubbing the pads or the frame.
- Check axle nuts and quick-releases are tight and that 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; peak output is 1000 W and it arrives quickly.
- Switch on the headlight and tail-light for dusk or night riding, and wear a helmet rated for 25 mph.
- Confirm the lockable front suspension fork is set the way you want it before you set off - locked for smooth tarmac, open for broken surfaces.
Quick Troubleshooting
The motor does not engage when I open the throttle.+
Confirm the display is on and showing charge, the battery is locked home, and both brake levers are fully released - the cut-off sensors disable drive while a lever is pulled. If the display shows an error code, note it 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. Then consider temperature, since cold cuts available capacity temporarily. If range is down more than 30 percent year-round after many cycles, the pack is approaching the end of its service life.
The brakes feel spongy or the lever pulls too far.+
On a hydraulic system that usually means air in the line or a fluid leak; stop riding and have it bled and inspected. On a cable system, take up the slack at the barrel adjuster and replace pads under 1 mm.
The chain skips under hard pedalling.+
Indexing on the 7-Speed Shimano derailleur is likely out of adjustment, or the chain and cassette are worn. Turn the barrel adjuster a quarter turn at a time to line the indexing back up. If it only skips in the smallest cogs, replace the cassette and chain together.
The suspension rattles or feels harsh over bumps.+
Check the fork lockout is in the position you expect and that the wheel is seated in the dropouts. If a rattle persists, inspect the stanchions for scoring and have a shop service the lowers or the rear shock bushings.
The display shows an error code and the bike will not move.+
Switch the system off, wait 30 seconds and switch it back on. If the code returns, note the exact code and what you were doing when it appeared, then contact support - codes map to specific faults in the controller, motor or throttle circuit.
Certifications & Standards
The HKM-600147 is produced in a facility operating an ISO 9001 quality management system. The LG cells and the assembled pack carry the test documentation normally required for lithium-ion transport and retail 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 bicycle capable of 25 mph (40 km/h). Read the manual before the first ride and practise throttle control in an open, traffic-free area until the response feels predictable. Loaded braking distances are noticeably longer than solo.
- Wear a helmet on every ride. At 25 mph a bicycle helmet is the minimum; many riders choose a certified downhill or motorcycle helmet at these speeds.
- Do not exceed the 350 lb (158 kg) load capacity, which includes the rider, any passenger and all cargo.
- Check local law before riding on public roads or paths. A 700 W motor with 1000 W peak output and a 25 mph top speed may place this vehicle outside standard e-bike classifications in your area.
- Bed the pads in with 10-15 progressive stops during the first rides before riding at full speed or with cargo aboard.
- Do not ride through water deep enough to reach the hub motor or the battery compartment.
- Charge only with the supplied charger, indoors, at room temperature and on a non-flammable surface. Do not leave a charging pack unattended overnight.
- Do not open, puncture or modify the battery pack. Damaged lithium cells can vent and ignite.
- Reduce speed substantially on gravel, wet surfaces and downhill grades; wide tires add grip but do not remove the risk of losing traction.
HKM-600147 · 700 W dual-motor Bafang drivetrain (1000 W peak) · 48 V 15 Ah LG lithium (720 Wh) · 25 mph top speed · 28-50 mi range · Kenda 26 x 4.0 in tires · 350 lb (158 kg) load capacity · 6061 aluminum alloy frame · lockable front suspension fork · Tektro mechanical disc brakes, front and rear · 7-Speed Shimano derailleur. Specifications are provided for reference; actual performance varies with rider weight, terrain, tire pressure, temperature and riding style. Range figures are measured under moderate pedal-assist on level pavement. This page describes the product only and is not legal advice on vehicle classification - confirm local regulations before riding on public roads.
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