Low-Noise, Low-Maintenance Off-Road Machine
HKM-713491 Electric Dirt Bike
The HKM-713491 answers a question combustion dirt bikes cannot: where else could you ride if the bike were quiet? Its brushless 6500 W peak drivetrain runs at a fraction of the noise of a petrol engine and needs no oil, filters, or plugs, while a 72 V 30 Ah lithium pack holding 2160 Wh supports up to 69.9 mi (112.5 km) per charge. Ride modes span 37.2-49.7 mph (59.9-80.0 km/h), a sine-wave controller keeps power delivery smooth, and adjustable long-travel suspension with regenerative hydraulic disc brakes covers the terrain in between.
Near-Silent Brushless Drivetrain6500 W Peak Motor72 V 30 Ah / 2160 Wh PackUp to 69.9 mi (112.5 km)37.2-49.7 mph Ride ModesNo Oil, Filters, or PlugsRegenerative Disc BrakingAdjustable Full Suspension
Motor
6500 W
Peak brushless DC, low noise
Battery
72 V 30 Ah
2160 Wh lithium-ion
Top Speed
49.7 mph
80.0 km/h in the highest mode
Range
Up to 69.9 mi
112.5 km per charge
Tires
Knobby
Self-cleaning off-road tread
Servicing
Minimal
No oil, filters, or spark plugs
Overview
A conventional dirt bike engine contains hundreds of moving parts that all need attention: piston rings, valves, camshafts, clutch plates, gearbox internals, carburettor jets or injectors, and an exhaust system. The HKM-713491 replaces all of it with a brushless motor that has one moving part - the rotor - and a controller with nothing that wears. What remains on the maintenance list is the chain, the tires, the brake pads, and sensible charging habits.
Noise is the second thing that changes. The drivetrain operates at a fraction of the decibel level of a comparable petrol machine, which is not merely more pleasant - it changes where and when riding is possible. Trails close to houses, private land with noise conditions, and early-morning starts all become realistic. There is a practical side effect too: you can hear the surface under the tires and other riders around you.
None of that comes at the expense of capability. The 6500 W peak brushless DC motor makes maximum torque from zero rpm and holds efficiency above 90 percent because there is no commutator to burn energy as friction. A sine-wave controller shapes that output smoothly, giving throttle resolution fine enough for technical single-track and reducing the drivetrain whine that square-wave controllers produce.
The 72 V 30 Ah pack stores 2160 Wh and supports up to 69.9 mi (112.5 km) per charge, managed cell by cell for voltage, temperature, and balance. The chassis is gusseted high-tensile steel, the suspension is long-travel and adjustable at both ends, the tires are knobby and self-cleaning, and the hydraulic disc brakes are supplemented by regeneration that returns energy on descents and takes load off the pads.
Key Features
Brushless DC Motor, 6500 W Peak
One moving part, no commutator, no brushes to replace. Efficiency stays above 90 percent and service life runs into thousands of hours, while peak torque is available the instant you open the throttle rather than somewhere up the rev range.
72 V 30 Ah Lithium Pack (2160 Wh)
High-density cells in a reinforced housing rated for sustained high-current discharge. 2160 Wh supports up to 69.9 mi (112.5 km), and the BMS protects each cell against over-discharge, over-current, and thermal stress while keeping the pack balanced.
Adjustable Long-Travel Suspension
Long forks at the front, a progressive shock at the rear, and preload and damping adjustment at both ends. The same bike can be plush for fire roads or firm for fast, rough descents, matched to your weight rather than a factory average.
Hydraulic Discs Plus Regeneration
Sealed hydraulic lines and large rotors deliver progressive, consistent lever feel in dust, mud, and rain. Regenerative braking returns part of the energy to the pack and, more noticeably, reduces pad wear on long descents.
Chain Drive with Nothing to Shift
Single-ratio chain final drive: no clutch, no gearbox, no power band. Re-gearing is a sprocket change, and every component in the drive path is a standard off-road part that any workshop can source.
Self-Cleaning Knobby Tires
Deep, widely spaced tread blocks grip dirt, mud, gravel, and hardpack and throw packed material clear as the wheel turns. Compliant sidewalls soak up small hits and reduce the chance of a pinch flat.
Sine-Wave Controller for Quiet, Smooth Power
Sine-wave commutation cuts torque ripple and the audible whine that comes with square-wave switching. The bike is quieter as a result, and throttle response at walking pace is fine enough for genuinely technical ground.
IP-Rated Sealing on the Electronics
Controller, BMS, and wiring harness are protected against dust ingress and water splashes, so wet weather and shallow crossings do not shorten the ride. Dry the bike and lubricate the chain when you are back.
Full Specifications
Model
HKM-713491 | Electric Dirt Bike
Frame Material
High-tensile steel tubing, gusseted at high-stress junctions
Motor
6500 W peak brushless DC (BLDC), single moving part
System Voltage
72 V DC
Battery
72 V 30 Ah lithium-ion, 2160 Wh
Charger
Smart charger, 100-240 V input
Charging Time
Several hours from empty; charge rate tapers near full capacity
Battery Management
Continuous per-cell monitoring with active balancing
Top Speed
37.2-49.7 mph (59.9-80.0 km/h) depending on ride mode
Range Per Charge
Up to 69.9 mi (112.5 km) under favourable conditions
Climbing
Peak output available from rest for steep and loose ascents
Controller
Sine-wave controller; reduced whine and fine low-speed modulation
Drive Type
Single-ratio chain final drive, no clutch or gearbox
Brakes
Hydraulic disc brakes front and rear, large rotors, with regenerative braking
Suspension
Long-travel front forks and progressive rear shock, adjustable preload and damping
Tires
Knobby off-road tires with deep, self-cleaning tread blocks
Wheels
Spoked off-road wheels with compliant sidewall tires
Ergonomics
Test-developed rider triangle with a slim waist profile for knee grip
Instrumentation
Handlebar readout for speed, state of charge, and ride mode
Throttle
Twist throttle mapped through the selected ride mode
Weather Protection
IP-rated sealing on controller, BMS, and wiring harness
Intended Use
Single-rider off-road and closed-course riding
Motor Efficiency
Over 90 percent under load
Rider Fit
Adult off-road ergonomics with an upright standing position
Certifications
CE, RoHS; battery cells UN38.3 tested
Battery, Range, and Charging
Two thousand one hundred and sixty watt-hours, stored at 72 V nominal across 30 Ah of high-density lithium cells. In favourable conditions that supports up to 69.9 mi (112.5 km). Running at a higher system voltage means lower current for the same output, which reduces resistive losses in the harness and connectors and helps the pack hold its voltage through sustained demand.
The management system is what makes the pack last. It reads every cell for voltage and temperature, balances them actively so charge distributes evenly, and blocks over-discharge, over-current, and thermal excursions. Practically, that means range estimates stay consistent as the bike ages and no single weak cell caps what the rest of the pack can deliver.
Tip: Charge somewhere cool and dry, and avoid leaving the pack at either extreme of its charge window for long periods. Those two habits do more for long-term capacity than anything else an owner controls.
A full charge from empty takes several hours on the standard charger, with the final stage deliberately slowed to limit heat. Partial top-ups between rides are fine and are gentler on the cells than repeated deep discharges - there is no benefit in running the pack flat before plugging in.
Daily Use & Care
- Set tire pressure to the surface: lower for loose dirt and sand, higher for rock and hardpack.
- Lubricate the chain and check tension after every ride - with no engine to service, this is the main job left.
- Rinse mud off the fork stanchions and shock shaft before it dries and damages the seals.
- Check brake pad thickness periodically and keep the rotors clean of oil and chain lubricant.
- Re-check spokes, axle nuts, and footpeg fasteners after heavy landings or rough sections.
- Dry the charge port and connectors after wet rides and store the bike under cover.
- Charge in a cool, dry place and unplug when the charger reports the cycle finished.
What's in the Box
- 1 x HKM-713491 electric dirt bike, largely pre-assembled
- 1 x 72 V 30 Ah lithium battery pack (2160 Wh), fitted
- 1 x Smart charger, 100-240 V input
- 1 x Ignition key set
- 1 x Toolkit for trailside adjustments
- 1 x Front wheel and handlebar hardware pack
- 1 x Chain lubricant sample
- 1 x User manual and pre-ride inspection guide
Frequently Asked Questions
How quiet is it, really?+
The drivetrain runs at a fraction of the decibel level of a comparable petrol dirt bike. What you mostly hear is tire noise, chain noise, and suspension working. That is quiet enough to make trails near homes and early-morning rides practical where a combustion machine would not be.
What maintenance does it actually need?+
Chain lubrication and tension, tire pressure, brake pad inspection, and charging within a sensible window. There are no oil changes, air filter cleanings, spark plugs, or carburettor adjustments. Suspension units benefit from periodic servicing exactly as on any off-road motorcycle.
What terrain does it suit?+
Dirt trails, gravel tracks, forest roads, sandy washes, and moderately rocky ground. Knobby tires, long-travel suspension, and instant torque handle loose surfaces and climbs well; tire pressure and rider skill widen the envelope further.
What range should I expect?+
Up to 69.9 mi (112.5 km) from the 2160 Wh pack in favourable conditions. Soft sand, sustained climbing, cold weather, heavier riders, and full-throttle running all reduce it. Note the charge consumed on a familiar loop to get your own planning figure.
How long does charging take?+
Several hours from a depleted pack with the standard charger, with the rate slowing near full capacity so the last part of the charge goes in gently. Topping up between sessions is the easier routine.
Is 6500 W too much for a newer rider?+
Not in a lower ride mode. The restrained maps cap speed near 37.2 mph (59.9 km/h) with a softer throttle curve, and having no clutch or gearbox removes two significant learning barriers. Progress through the modes as your control improves.
What does regenerative braking contribute?+
It returns a modest amount of energy to the pack and reduces how hard the friction brakes have to work. Over a season of descents the reduction in pad and rotor wear is the more measurable of the two effects.
Can it be ridden in the wet?+
Yes. The controller, BMS, and harness are sealed to an IP rating against dust and splashes, covering rain, mud, and shallow crossings. Do not submerge the machine, and dry it and re-lubricate the chain when you finish.
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.
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.
CERoHSUN38.3 Battery2160 Wh PackLow-Noise DrivetrainRegen BrakingIP-Rated Sealing
Why Choose the HKM-713491
Fewer Parts, Less to Go Wrong
A rotor and a controller replace pistons, valves, clutch plates, a gearbox, a carburettor, and an exhaust. That is not just cheaper to run - it is one less category of failure to think about when you are a long way from the trailhead.
Suspension You Can Set Yourself
Preload and damping adjust at both ends with hand tools, so the bike follows your weight and terrain rather than a factory compromise. The progressive rear shock stays comfortable on chatter while resisting bottoming on landings.
Ride Modes to Match the Rider
The same machine can be a restrained 37.2 mph trail bike or a 49.7 mph sportbike. Mode selection changes the controller map only, so nothing is permanently traded away by starting conservative.
Riding Where Noise Would Stop You
Low acoustic output makes trails near residential areas, land with noise restrictions, and early starts genuinely available. It also reduces disturbance to wildlife and other trail users.
No Exhaust, No Spills
Zero tailpipe emissions and no petrol, oil, or coolant to leak onto the ground. For riding areas with air-quality restrictions or contamination concerns, that is often the deciding factor.
Sealed and Ready for Weather
IP-rated electronics, a reinforced battery enclosure, and hydraulic lines that cannot corrode the way cables do. The machine is built to be ridden in real conditions and then ridden again next weekend.
Controls & Indicators
Key Switch
Turns the main system on and off; remove the key when parked
Ride Mode Selector
Cycles the controller power maps from restrained to full output
Twist Throttle
Right-hand grip with proportional, sine-wave-shaped response
Speed Readout
Live road speed on the handlebar display, mph or km/h
State of Charge
Pack level indicator fed by the battery management system
Kill Switch
Cuts motor drive instantly without powering the system down
Suspension Adjusters
Preload and damping controls at the forks and rear shock
Pre-Ride Safety Checklist
- Set tire pressure for the terrain you are heading onto.
- Check chain tension and lubrication and confirm the rear axle nuts are torqued.
- Pull both brake levers; they should firm up early with no sponginess.
- Confirm the state of charge on the display and that the pack is locked into place.
- Spin both wheels, looking for buckles, loose spokes, or rotor contact.
- Check the forks and shock for oil weeping and confirm your adjuster settings.
- Test the throttle and kill switch at walking pace in a clear area.
- Wear a full-face helmet, goggles, gloves, boots, and body protection.
Quick Troubleshooting
The bike will not drive when I open the throttle.+
Check the key switch and kill switch, confirm the display shows charge, and make sure the battery connector is fully seated. Pulled brake levers cut motor drive. Record any fault code shown before contacting support.
There is a new noise from the drivetrain.+
On a quiet machine, new noises are easy to hear and worth investigating. Check chain tension and lubrication first, then sprocket wear, then wheel bearings. A rising whine under power that was not there before should be inspected rather than ridden through.
The brake lever feels soft.+
Air in the hydraulic line or a fluid leak. Stop riding and have the system inspected and bled before the next ride. Braking is not negotiable on a machine that reaches 49.7 mph.
Range has dropped compared with when it was new.+
Check tire pressure and chain condition first, then temperature - cold reduces available capacity temporarily. A persistent year-round loss of more than about 30 percent after many cycles indicates the pack is nearing the end of its service life.
The suspension feels harsh on small bumps.+
Usually too much compression damping or too much preload for your weight. Back the adjusters off one click at a time and re-ride the same section, noting each change so you can return to a known setting.
A fault code appears and drive is disabled.+
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, then contact support - codes identify specific faults in the controller, motor, BMS, or throttle circuit.
Certifications & Standards
The HKM-713491 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 for lithium-ion shipping by air, sea, and road.
- MSDS - Material Safety Data Sheet for the battery pack, available on request.
- ISO 9001 - Quality management system certification held by the manufacturing facility.
Important Safety Notes
A quiet machine is still a fast one. This bike reaches 49.7 mph (80.0 km/h) in its highest ride mode with 6500 W of peak output available from a standstill. Read the manual before the first ride, start in the lowest mode, and increase output only as your control becomes predictable. Off-road riding carries inherent risk.
- Wear a full-face off-road helmet, goggles, gloves, boots, and body protection on every ride.
- Start in the lowest ride mode and move up as your throttle and brake control improve.
- Check local regulations. A 6500 W machine capable of 49.7 mph is generally not street-legal and is intended for off-road and closed-course use.
- Remember that other trail users may not hear you approaching - slow down and signal your presence when passing.
- Bed the brake pads in with progressive stops before riding fast or descending steep ground.
- Do not ride through water deep enough to reach the motor or the battery enclosure.
- Charge only with the supplied charger, in a cool, dry, ventilated space, on a non-flammable surface, and never modify the pack.
- Reduce speed on wet roots, loose gravel, and steep descents - knobby tread improves grip but does not remove the risk of a slide.
HKM-713491 · 6500 W peak brushless DC motor · sine-wave controller · 72 V 30 Ah lithium-ion (2160 Wh) · 37.2-49.7 mph (59.9-80.0 km/h) across ride modes · up to 69.9 mi (112.5 km) range · single-ratio chain drive · hydraulic disc brakes with regenerative braking · adjustable long-travel forks and progressive rear shock · knobby self-cleaning tires · gusseted high-tensile steel frame · IP-rated controller, BMS, and harness · no oil, filters, or spark plugs to service. Specifications are provided for reference; actual performance varies with rider weight, terrain, tire pressure, temperature, ride mode, and riding style. Intended for off-road and closed-course use - confirm local regulations before riding.
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With over 3,000 authorized service centers across the United States, we ensure comprehensive after-sales support for your vehicle, giving you complete peace of mind.
We understand that maintenance needs may arise. When you purchase from us, you gain access to our unparalleled service ecosystem designed for maximum convenience and reliability.
1. DIY Repair & Parts Replacement:
For minor repairs or part replacements that can be handled personally, we provide cost-price genuine parts during the warranty period. Each order is accompanied by clear, step-by-step video tutorials to guide you through the self-repair process seamlessly.
2. Professional Servicing:
For issues requiring expert attention, simply contact our support team. We will locate the nearest authorized service center based on your order and location details. You only need to bring your vehicle to the designated center. Once servicing is complete, we will notify you for pickup. All repairs are free during the warranty period; afterward, only cost-based fees apply.
Rest assured—wherever you are, our extensive partner network is ready to keep your ride running smoothly.
Lifetime Limited Powertrain Warranty & Wrap Program
For added long-term security, our Lifetime Limited Powertrain Warranty and Lifetime Wrap Program provide continued mechanical breakdown coverage for as long as you own your vehicle—with no term or mileage restrictions.
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The 180 Days Purchase Protection protects the buyer if an item purchased has not been shipped or if a shipped item is significantly not as described by the seller. The 180 Days Purchase Protection covers all purchases and payments made through our website. We accept Visa, Master Card, American Express, and Discover Card. If you don't receive the item that you ordered, or it shows up significantly different from its description, you may qualify for Purchase Protection, and we'll reimburse you for the full purchase price plus any original shipping costs, subject to terms and limitations. If you are charged for a transaction that you didn't make, let us know within 60 days, and we've got you covered.
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We are confident that our products are of great quality and even better value. However, if upon receiving and inspecting your item you decide that you want to return it, you will have 30 days as of the date of shipment arrival to return it for a refund minus the shipping cost. No restocking charges. Any additional fees associated with a purchase transaction will be deducted from the amount of the refund.
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If you purchase products from our website, you have 24 months to request repairs or replacement if any products turns out to be faulty or are not as advertised. During the warranty period if any product is found to have a manufacturer defect, we will repair or replace the defective part(s). If a product cannot be repaired or replaced within a reasonable time, you can request a refund or price reduction. We are confident that our products are of great quality and even better value. However, if upon receiving and inspecting your item you decide that you want to return it, you will have 30 days as of the date of shipment arrival to return it for a refund minus the shipping cost.
