Full-Suspension Dual-Battery Electric Fat-Tire Bike
HKM-6432467 Electric Fat-Tire Bike
The HKM-6432467 pairs a 1000 W brushless rear hub motor with a dual-battery 48 V 31.2 Ah pack (about 1498 Wh) for a class-leading range of 62 mi on throttle alone and up to 149 mi with pedal assist. The 20 x 4.0 in fat tires float over sand, snow, and trail, while a full suspension package - an 80 mm front fork plus twin rear coil springs - absorbs what the tires cannot. A 7-speed drivetrain, an LCD, and a 330 lb load rating round out a bike built for riders who want to go far on any surface.
1000 W Brushless MotorDual 48 V 31.2 Ah / 1498 Wh Pack31.1 mph Top Speed (50 km/h)62-149 mi Range20 x 4.0 in Fat TiresFull Suspension7-Speed Drivetrain330 lb Load Capacity
Motor
1000 W
Brushless rear hub
Battery
48 V 31.2 Ah
Dual pack, about 1498 Wh
Top Speed
31.1 mph
50 km/h, throttle only
Range
62-149 mi
Throttle 62 mi, PAS up to 149 mi
Tires
20 x 4.0 in
Fat tread, all-surface
Load Capacity
330 lb
150 kg rider plus cargo
Overview
The HKM-6432467 is built around a 6061 aluminum frame designed for big tires and heavy loads. The 20 x 4.0 in fat tires lower the bike and spread rider weight over a wide contact patch, while the frame is rated for a combined rider-and-cargo load of 330 lb. The dual-battery down tube keeps the center of gravity low for stable handling at speed.
The headline feature is the dual-battery system: two 48 V packs combine for 31.2 Ah, about 1498 Wh of energy. That headroom is what delivers 62 mi on throttle alone and up to 149 mi with pedal assist - enough for a long day of riding or a week of commutes between charges. A 1000 W brushless rear hub motor feeds the wheel directly for instant response.
Real-world range spans a wide band because the bike adapts to how you ride. Throttle-only on flat pavement at moderate speed returns around 62 mi. Moderate pedal-assist on the same terrain regularly returns 99-149 mi. Aggressive speed, hills, headwinds, and a heavy load all reduce those numbers; firm tires and warm weather push them up.
Comfort hardware matches the range and the tires. An 80 mm-travel front fork and twin rear coil springs share the suspension duty, and the fat tires add a second layer of cushion. Mechanical disc brakes at both ends give predictable stopping power, and a color LCD keeps speed and charge in view at a glance.
Key Features
1000 W Brushless Rear Hub Motor
A 1000 W brushless motor is laced directly into the rear wheel hub. There is no chain or belt between the motor and the ground, so drive losses stay low and maintenance is limited to keeping the axle nuts torqued. The motor pulls away confidently from a stop and holds speed on the flat and on moderate grades.
Dual 48 V Battery Packs (About 1498 Wh)
Two 48 V packs combine for 31.2 Ah and about 1498 Wh, stored in the down tube behind a lockable cover. The dual layout lifts out with a key for indoor charging and delivers 62 mi on throttle alone, up to 149 mi with assist. A full recharge from empty takes about 5-6 hours on the supplied 2 A charger; partial top-ups take proportionally less.
Full Suspension: 80 mm Fork + Dual Rear Coils
An 80 mm-travel front fork smooths out broken pavement and trail edges, while twin rear coil springs under the seat take care of the larger hits. Together with the fat tires, the bike stays comfortable over surfaces that would shake up a rigid frame. Riders on smooth paths can run the fork firm for efficient pedaling.
Mechanical Disc Brakes, Front and Rear
Mechanical disc brakes actuate both 160 mm rotors. The all-mechanical setup is easy to adjust and service in the field, and it gives consistent stopping power in wet and dirty conditions. Power-off brake levers cut motor drive the instant either lever is pulled.
7-Speed Drivetrain
A 7-speed derailleur with an index shifter gives usable pedaling cadence from walking pace up to cruising speed. The wide gear range is what lets you climb the grades this bike is rated for and extend range by pedaling on the flat.
20 x 4.0 in All-Surface Fat Tires
Run at low pressure the wide casing spreads rider weight over a large contact patch for float over sand and snow. At higher pressure it rolls efficiently on pavement. The knobby tread adds grip on gravel, wet pavement, and park paths.
LED Headlight and Integrated Tail Light
A bright LED headlight runs off the main pack so there are no separate batteries to keep charged. A tail light adds visibility from behind in traffic and at dusk, powered through the main switch.
Rear Cargo Rack
A rear rack is sized for a pannier, a backpack, or a small crate, so groceries and gear ride on the bike instead of on your back. Combined rack capacity is about 60 lb.
Full Specifications
Model
HKM-6432467 | Electric Fat-Tire Bike
Frame Material
6061 aluminum alloy, fat-tire geometry
Motor
1000 W brushless rear hub motor
System Voltage
48 V DC
Battery
Dual 48 V packs, 31.2 Ah total (about 1498 Wh), removable and lockable
Charger
2 A 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
31.1 mph (50 km/h)
Range Per Charge
62 mi throttle only; 99-149 mi with pedal assist (varies with terrain and load)
Climbing Grade
Up to approximately 25 degrees with a solo rider
Peak Torque
High-torque rear hub (rated for steep climbs)
Drivetrain
7-speed derailleur with index shifter
Brakes
Mechanical disc brakes, front and rear, 160 mm rotors, power-off levers
Suspension
80 mm front fork + dual rear coil springs, full suspension
Tires
20 x 4.0 in fat tires, knobby all-surface tread
Wheels
20 in alloy rims, stainless spokes
Saddle
Wide comfort saddle, upright position
Display
Backlit LCD: speed, battery level, assist mode, trip distance, odometer
Throttle
Twist-grip throttle with 7-speed and pedal-assist levels
Lighting
LED headlight, integrated tail light, powered by main battery
Load Capacity
330 lb (150 kg) rider plus cargo
Bike Weight
Approximately 79 lb (35.8 kg) including batteries
Recommended Rider Height
5 ft 2 in to 6 ft 4 in (157-193 cm)
Certifications
CE, RoHS; battery cells UN38.3 tested
Battery, Range, and Charging
The dual 48 V packs combine for 31.2 Ah and about 1498 Wh of energy. For context, most e-bikes ship with 400-600 Wh, so this system runs roughly double to triple the usual budget. That headroom is what delivers 62 mi on throttle alone and up to 149 mi with assist.
Real-world range depends on four variables more than anything else: how much you pedal, rider and cargo weight, tire pressure, and terrain. Throttle-only riding on flat pavement at moderate speed lands around 62 mi. Moderate pedal-assist on the same terrain regularly returns 99-149 mi. Cold weather below 40 F (4 C) temporarily reduces available capacity by 10-20 percent; it returns once the pack warms up.
Tip: Store the packs between 30 and 70 percent charge if the bike will sit unused for more than a month, and top them up every 4-6 weeks. Charging indoors at room temperature extends usable pack life compared with charging in an unheated space.
The packs unlock with the supplied key and lift out of the down tube in a few seconds, so you can charge them at a desk while the bike stays locked. Two keys are included. Charging with the packs installed works equally well through the frame-side port.
Daily Use & Care
- Tire pressure sets the character of the bike. Run 15-20 psi on pavement for lower rolling resistance; drop to 10-12 psi for sand, snow, or gravel.
- Rinse the frame, rims, and drivetrain with fresh water after riding on salted roads, sand, or wet gravel.
- Check that both axle nuts and the stem bolts are torqued before the first ride of each week. Hub-motor torque works fasteners loose faster.
- Wipe and re-lubricate the chain every 100-150 mi, or after any ride through standing water or dusty conditions.
- Inspect brake pad and rotor condition monthly. Mechanical discs wear visibly; replace pads when the friction material is under 1 mm.
- Charge indoors at room temperature. Unplug the charger once the indicator turns green rather than leaving it connected for days.
- Keep the display and charge port covers closed when the bike is parked outside so moisture stays out of the connectors.
What's in the Box
- 1 x HKM-6432467 electric fat-tire bike, approximately 85 percent pre-assembled
- 2 x 48 V removable lithium battery packs (31.2 Ah total)
- 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 Rear cargo rack (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 pedals and saddle, and checking brake alignment. Budget 30-45 minutes with the supplied tools. Have a bike shop check torque and brake bedding if you are not comfortable doing it yourself.
What range should I plan for?+
Plan for 62 mi on throttle alone, up to 99-149 mi with pedal assist. Higher speeds, hills, headwinds, and a heavy load land closer to the lower end; moderate assist on flat ground reaches the upper end.
Is a license or registration required?+
Rules vary by state and locality. A 1000 W motor with a 31.1 mph top speed may exceed the limits of the common three-class e-bike framework in many US jurisdictions. Check your state DMV and local ordinances before riding on public roads or bike paths.
How long does the battery take to charge?+
About 5-6 hours from fully empty with the supplied 2 A charger. Partial top-ups take proportionally less time; there is no need to run the pack down before recharging.
Can I pedal it if the battery runs out?+
Yes. The 7-speed drivetrain works independently of the motor. The bike is around 79 lb, so pedaling home unassisted is slow going, but it is possible on flat ground.
What surfaces are the fat tires for?+
The 20 x 4.0 in tires float over sand and snow at low pressure and roll efficiently on pavement at higher pressure. They add grip on gravel, wet pavement, and park paths where a narrower tire would skate around.
Is the battery removable for indoor charging?+
Yes. The dual packs unlock with the supplied key and lift out of the down tube. You can also charge them in place through the frame-side charge port.
Will the brakes handle the speed and the load?+
Mechanical disc brakes front and rear are the appropriate specification for a 31.1 mph bike of this weight. Bed the pads in during the first few rides, and brake earlier than usual with a full 330 lb load.
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 Battery1498 Wh PackFull SuspensionFat Tires330 lb Load
Why Choose the HKM-6432467
Go-Far, Any-Surface Commuter
A dual-battery 1498 Wh system and fat tires turn this bike into a long-distance, all-surface tool rather than a short-hop toy. You can commute across town, ride the beach, or run errands on the same bike.
Full Suspension for Real Roads
Potholes, sand, snow, and gravel all become rideable when the 80 mm fork and rear coils absorb what a rigid frame would transmit to the rider. The fat tires add a second layer of cushion.
Two Ways to Ride
Twist the throttle for immediate acceleration, or shift through the 7-speed cassette and pedal. Most owners mix both - throttle to get moving, pedals to extend range, and motor for hills.
Direct-Drive Simplicity
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.
Fat Tires for a Wide Range of Riders
The 20 x 4.0 in wheels combined with the frame lower standover height so most riders can put both feet down at a stop. Combined with the recommended height range, the bike fits a wide range of rider sizes.
Built for Daily Use, Not Just Weekends
Sealed electrical connectors, a covered and lockable battery compartment, and disc brakes that resist weather all make sense for a bike that gets ridden to work and parked outside in the elements.
Controls & Indicators
Power Button
Located on the battery pack; hold to switch the system on and off
Mode Buttons
Up and down buttons on the display cycle through pedal-assist levels and zero assist
Twist Throttle
Right-hand grip; proportional response, works independently of pedal-assist level
Speedometer
Live speed readout in mph, switchable to km/h in the settings menu
Battery Gauge
Multi-segment charge indicator plus percentage readout on the LCD
Light Switch
Toggle the LED headlight and tail light from the display
Shifter
Right-hand index shifter for the 7-speed rear derailleur
Pre-Ride Safety Checklist
- Check tire pressure and set it for the surface: 10-12 psi for sand/snow/gravel, 15-20 psi for pavement.
- Squeeze both brake levers. They should firm up well before reaching the grip, with even pad contact on the rotors.
- Confirm the batteries 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 and stem bolts 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 or with a load.
- Switch on the headlight and tail light if you will be riding near dusk, and wear a helmet rated for the speeds this bike reaches.
- If carrying cargo on the rear rack, confirm it is secured before riding.
Quick Troubleshooting
The motor does not engage when I twist the throttle.+
Confirm the display is on and shows charge, the batteries 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 fat tire 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 cycles, the packs may be near the end of their service life.
The brakes feel weak at the lever.+
Mechanical discs need periodic pad and cable adjustment. Check pad thickness and rotor true; adjust the barrel adjuster for lever reach. Stop riding if a rotor is badly warped and have it serviced.
The chain skips under hard pedaling.+
The derailleur indexing is likely out of adjustment, or the chain and cassette are worn. Adjust the barrel adjuster a quarter turn at a time. If it skips only in the smallest cogs, the cassette is worn and should be replaced with the chain.
The front fork rattles over bumps.+
Check that the wheel is seated in the dropouts and the quick-release is fully closed. If the rattle persists, the fork may need service - inspect the stanchions for scoring and have a shop rebuild it 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, then contact support - error codes map to specific faults in the controller, motor, or throttle circuits.
Certifications & Standards
The HKM-6432467 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 packs 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 31.1 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 31.1 mph a bicycle helmet is the minimum; many riders choose a certified multi-sport helmet at these speeds.
- Do not exceed the 330 lb (150 kg) load capacity, which includes the rider and cargo.
- Check local law before riding on public roads or paths. A 1000 W motor with a 31.1 mph top speed may place this vehicle outside standard e-bike classifications in your area.
- Bed in the brake pads with progressive stops during the first few rides before riding at full speed or with a load.
- 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 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, sand, snow, and downhill grades; fat tires add grip but do not eliminate the risk of losing traction.
HKM-6432467 · 1000 W brushless rear hub motor · dual 48 V 31.2 Ah lithium (about 1498 Wh) · 31.1 mph (50 km/h) top speed · 62-149 mi range · 20 x 4.0 in fat tires · 330 lb (150 kg) load capacity · 6061 aluminum frame · full suspension · disc brakes · 7-speed drivetrain. 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 regarding vehicle classification - confirm local regulations before riding on public roads.
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