Full-Size 72 V 8000 W Electric Enduro with Adjustable Suspension
HKM-624083 Electric Enduro Dirt Bike
The HKM-624083 is a full-size electric enduro built on a reinforced tubular steel frame with 19 in wheels, 12.6 in of ground clearance, and a 35 in seat height. An 8000 W permanent-magnet mid-drive motor sends power through a sealed O-ring chain for a documented 50 mph (80 km/h), and the 72 V lithium pack covers 62-81 mi (100-130 km) of trail riding before it needs the 4-5 hour recharge. Suspension is fully adjustable at both ends - an inverted fork with 7.9 in (200 mm) of travel and a preload and damping adjustable rear monoshock - with 220 mm front and 200 mm rear hydraulic discs doing the stopping.
8000 W Mid-Drive Motor72 V Lithium, Smart BMS50 mph (80 km/h) Top Speed62-81 mi Range90/100-19 Knobby Tires7.9 in Inverted Fork Travel220/200 mm Hydraulic Discs331 lb Max Load
Motor
8000 W
Permanent-magnet mid-drive
Battery
72 V
Removable lithium, smart BMS
Top Speed
50 mph
80 km/h, throttle only
Range
62-81 mi
100-130 km mixed trail riding
Ground Clearance
12.6 in
320 mm, enduro geometry
Max Load
331 lb
150 kg rider plus riding gear
Overview
The HKM-624083 is a full-size machine, not a scaled-down trail toy. Seat height is 890 mm (35 in) and ground clearance is 320 mm (12.6 in), which are enduro numbers - they let the bike clear rocks and logs that would ground a lower chassis, and they put the rider in a standing position that works over rough terrain. Riders under about 5 ft 8 in should expect to tiptoe at a stop.
Power comes from an 8000 W permanent-magnet motor mounted centrally rather than in a hub. That configuration keeps the mass low and close to the bike centreline, and it lets the drivetrain leverage gearing instead of relying on raw motor speed. A sealed O-ring chain with reinforced sprockets handles the final drive - the same solution used on combustion enduros, chosen because it transmits high torque without stretch or slip.
The 72 V lithium pack is managed by a BMS that balances the cells, limits current, and protects against over-temperature. Documented range is 100-130 km (62-81 mi) of real-world trail riding, and the smart charger brings the pack from empty to full in approximately 4-5 hours. The pack locks into the frame for security and uses quick-release mounting so it can be swapped or removed for indoor charging.
Suspension is the part most riders will notice first. The inverted front fork offers 200 mm (7.9 in) of travel with compression and rebound adjustment, and the rear monoshock is fully adjustable for preload and damping. Being able to dial in sag for your own weight is what separates a bike that works for you from one you simply put up with. Hydraulic discs - 220 mm front, 200 mm rear, dual-piston calipers - provide fade-resistant stopping to match.
Key Features
8000 W Permanent-Magnet Mid-Drive Motor
A high-efficiency permanent-magnet motor is mounted centrally for balance rather than laced into a wheel. Torque is available from zero rpm and the mid-mount position keeps unsprung weight at the rear wheel low, so the suspension can control the wheel properly. The motor casing is sealed against mud, water, and dust.
72 V Lithium Pack, Smart BMS, 4-5 Hour Charge
High-density cells are managed by a BMS that balances charge across the pack, prevents overheating, and extends cycle life. Documented range is 100-130 km (62-81 mi). The smart charger adjusts current automatically and takes the pack from empty to full in approximately 4-5 hours. The pack locks into the frame and uses quick-release mounting for easy removal.
Adjustable Inverted Fork and Rear Monoshock
The inverted front fork provides 200 mm (7.9 in) of travel, and the rear monoshock is adjustable for preload and damping. Both ends offer compression and rebound tuning, so you can set sag for your weight and dial the damping to your pace. The payoff is small-bump compliance on chatter and enough control to absorb a big hit without bottoming.
Hydraulic Discs, 220 mm Front and 200 mm Rear
Oversized rotors with dual-piston calipers give precise, fade-resistant stopping power. The larger front rotor does most of the work while the rear settles the chassis. Sealed hydraulic lines mean no cables to pack with mud, and lever feel stays consistent through a long descent.
Sealed O-Ring Chain Final Drive
A sealed O-ring chain running on reinforced sprockets transmits 8000 W reliably. O-rings hold lubricant inside the rollers and keep grit out, which is why the chain resists stretch far longer than a plain chain in the same conditions. Maintenance is limited to checking tension and cleaning and lubricating the outer plates.
90/100-19 Off-Road Knobby Tires
Full-size 19 in off-road tires with an aggressive tread pattern deliver grip on loose soil, mud, and hardpack while resisting punctures. The tread has self-cleaning voids that shed mud quickly to maintain grip in the wet. Run 12 psi for maximum traction on soft ground and up to 18 psi on hardpack for efficiency and rim protection.
LED Lighting for Dawn and Dusk Riding
LED lighting powered from the main traction pack covers early starts, late finishes, and low-light conditions under tree cover. There are no separate batteries to keep charged, and the beam is aimed for trail speeds rather than road use.
Truck-Bed and Trailer Transport
A full-size enduro with 12.6 in of ground clearance loads into a standard truck bed with a ramp or onto a folding trailer. Strap through the fork lowers and the rear subframe rather than the handlebar, and compress the front suspension slightly so the bike cannot bounce free of the tie-downs in transit.
Full Specifications
Model
HKM-624083 | Electric Enduro Dirt Bike
Frame Material
Reinforced tubular steel, enduro geometry
Motor
8000 W permanent-magnet mid-drive
System Voltage
72 V DC
Battery
72 V lithium, removable with quick-release mounting and smart BMS
Charger
Smart charger with automatic current adjustment, 100-240 V input
Charging Time
Approximately 4-5 hours from empty
Battery Cycle Life
Approximately 800 charge cycles to 80 percent capacity
Top Speed
50 mph (80 km/h)
Range Per Charge
62-81 mi (100-130 km) under mixed trail riding
Ground Clearance
12.6 in (320 mm)
Ingress Protection
IP65-rated motor, battery, and electronics against rain and splashes
Final Drive
Sealed O-ring chain with reinforced sprockets
Brakes
Hydraulic disc, 220 mm front and 200 mm rear, dual-piston calipers
Suspension
Inverted fork with 200 mm (7.9 in) travel; adjustable rear monoshock
Tires
90/100-19 off-road knobby, 12-18 psi depending on terrain
Wheels
19 in spoked wheels with reinforced nipples
Seat Height
35 in (890 mm)
Display
Digital readout: speed, battery level, ride mode, trip distance
Throttle
Twist-grip throttle with selectable ride modes including an economy setting
Lighting
LED headlight and rear light, powered by the main pack
Max Load
331 lb (150 kg) rider plus riding gear
Rider
Adult riders; recommended for experienced off-road use
Recommended Rider Height
5 ft 8 in to 6 ft 4 in (173-193 cm) given the 35 in seat height
Certifications
CE, RoHS; battery cells UN38.3 tested
Battery, Range, and Charging
The 72 V lithium pack uses high-density cells managed by a BMS that balances charge across the pack, limits current, and shuts output down before cells reach a temperature or voltage limit. High system voltage is deliberate on an 8000 W machine: at 72 V the drive draws considerably less current than the same power would at 48 V, so the controller, phase cables, and connectors stay cooler on long climbs.
Documented range is 100-130 km (62-81 mi) of real-world trail riding with moderate throttle use. The spread between those two numbers is the honest part - speed, terrain, rider weight, and tire pressure move the result substantially. Riding in the economy mode and keeping tire pressure toward the 18 psi end on hardpack can extend range past the upper figure; sustained running near 50 mph will fall short of the lower one.
Tip: The smart charger adjusts current automatically and takes the pack from empty to full in approximately 4-5 hours. Let the pack cool to room temperature after a hard ride before plugging in - charging a hot lithium pack is one of the fastest ways to shorten its service life.
The pack locks into the frame for security and uses quick-release mounting, so it can be lifted out for indoor charging or swapped for a second pack. For storage beyond a month, leave it between 30 and 70 percent charge and top up every 4-6 weeks rather than storing it full or empty.
Daily Use & Care
- Check O-ring chain tension before every ride day and lubricate the outer plates after wet or dusty rides. Do not use solvents that attack the O-rings.
- Set tire pressure for the surface: 12 psi for deep loam and sand where traction matters most, up to 18 psi on hardpack for efficiency and rim protection.
- Rinse mud off the rotors, fork stanchions, and monoshock body after wet rides, then dry the bike. Do not aim a pressure washer at seals, bearings, or connectors.
- Inspect the fork seals for weeping oil. Oil on the stanchions reaches the 220 mm front rotor and reduces braking effectiveness.
- Check pad thickness in both calipers monthly and after long descents. Replace pads before the friction material drops below 1 mm.
- Re-torque axle nuts, triple clamp bolts, and motor mounts after the first few hours of riding and then monthly. Enduro vibration works fasteners loose.
- Re-check suspension sag after any significant change in rider weight or gear load, and adjust preload accordingly before riding.
What's in the Box
- 1 x HKM-624083 electric enduro dirt bike, largely pre-assembled
- 1 x 72 V removable lithium battery pack with quick-release mounting
- 1 x Smart charger with automatic current adjustment, 100-240 V input
- 2 x Ignition and battery keys
- 1 x Toolkit with hex wrenches and axle spanner
- 1 x Suspension adjustment and sag-setting guide
- 1 x Set of spare fasteners
- 1 x User manual and pre-delivery inspection checklist
Frequently Asked Questions
Is this bike suitable for motocross tracks?+
The 8000 W motor and 200 mm of front travel are designed for jumps, whoops, and aggressive riding, so it performs well on motocross tracks as well as on trails. It is not a full competition MX machine, and suspension and gearing are set up for enduro-style riding across mixed terrain rather than for a single track layout.
How far will it go on a charge?+
Expect 100-130 km (62-81 mi) under mixed trail riding with moderate throttle. Range varies with speed, terrain, rider weight, and tire pressure. Using the economy setting and avoiding sustained high-speed running can extend range beyond 130 km.
Can I ride in wet conditions?+
The motor, battery, and electronics are rated to IP65 for protection against rain and splashes. Avoid submerging any part of the bike in deep water, do not pressure-wash the connectors, and dry the chain and moving parts after every wet ride.
Does it require a motorcycle licence?+
Regulations vary by region. In many areas an electric dirt bike used exclusively off-road does not require a licence. For any on-road use, check local law regarding electric motorcycle classification, registration, and licensing before riding.
How adjustable is the suspension?+
The inverted fork offers 200 mm (7.9 in) of travel with compression and rebound adjustment, and the rear monoshock is adjustable for preload and damping. Set static sag for your weight first using the supplied guide, then adjust rebound, then compression. Change one thing at a time and note the setting.
Is the 35 in seat height manageable?+
It is a full-size enduro seat height. Riders around 5 ft 8 in and above will generally get one foot flat or both feet on tiptoe at a stop. Shorter riders can reduce it slightly by lowering rear preload, though that changes the handling balance and reduces available sag.
What maintenance does the O-ring chain need?+
Check tension before each ride day, clean the outer plates with a chain-safe cleaner, and lubricate after wet or dusty rides. Avoid aggressive solvents and high-pressure water at the chain, since both damage the O-rings that hold lubricant inside the rollers.
How long does the battery take to charge?+
Approximately 4-5 hours from empty with the supplied smart charger, which adjusts current automatically as the pack fills. Partial top-ups take proportionally less time, and there is no need to run the pack flat before recharging.
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CERoHSUN38.3 BatteryIP65 RatedHydraulic BrakesAdjustable Suspension19 in Wheels
Why Choose the HKM-624083
Enduro Geometry, Not Bicycle Geometry
A 35 in seat, 12.6 in of ground clearance, and 19 in wheels are full-size enduro numbers. They let the bike clear obstacles, keep the footpegs out of the rocks, and put the rider in a standing position that works when the ground turns rough.
Suspension You Can Actually Set Up
Adjustable preload, compression, and rebound at both ends mean the bike can be tuned to your weight and pace instead of being ridden at the factory setting. Correct sag is the single change that improves grip and control most on any off-road machine.
Mid-Drive Mass, Chain Final Drive
Centralising motor mass and driving through a sealed O-ring chain is the layout combustion enduros settled on for good reason. It keeps unsprung weight low, lets the chassis change direction quickly, and transmits high torque without slip.
Instant Torque, Almost No Noise
Electric drive gives full torque from zero rpm with none of the exhaust noise of a combustion enduro. Trails and private land that restrict machines on noise grounds are often open to electric bikes, and early or late rides stop being a problem for neighbours.
No Fuel, No Jetting, No Filter Service
There is no carburettor to tune, no premix to measure, no air filter to oil, and no exhaust packing to replace. Ownership reduces to chain care, brake pads, suspension service, tire pressure, and charging.
IP65 Sealing Against Rain and Splashes
Motor, battery, and electronics are sealed to IP65, so rain, spray, and wet grass are normal operating conditions rather than a reason to stay home. Deep water crossings and pressure washing remain off limits.
Controls & Indicators
Key Switch
Switches the traction system on and off; remove the key when parked
Ride Mode Selector
Handlebar buttons cycle through ride modes including an economy setting for range
Twist Throttle
Right-hand grip with proportional response across the full power range
Speedometer
Live speed readout in mph, switchable to km/h in the settings menu
Battery Gauge
Segmented charge indicator plus percentage readout driven by the BMS
Light Switch
Handlebar switch for the LED headlight and rear light
Suspension Adjusters
Fork compression and rebound clickers plus rear monoshock preload and damping
Pre-Ride Safety Checklist
- Check O-ring chain tension and confirm the rear axle is square in the swingarm using the adjuster marks.
- Set tire pressure between 12 and 18 psi for the terrain, and inspect both tires for cuts, embedded stones, and torn knobs.
- Squeeze both brake levers. They should firm up well before the grip, with no sponginess indicating air in the hydraulic line.
- Confirm the battery is locked into its quick-release mount, the charge port cover is closed, and the display shows the expected state of charge.
- Verify suspension sag is still correct for your weight and gear load, and that the fork seals are not weeping oil.
- Check axle nuts, triple clamp bolts, and motor mount hardware are torqued to the values in the manual.
- Test the throttle at walking pace in an open area to confirm response feels normal before committing to a trail.
- Wear a certified off-road or motocross helmet, goggles, boots, gloves, and body armour appropriate for a 50 mph machine.
Quick Troubleshooting
The motor does not respond when I twist the throttle.+
Confirm the key switch is on, the display shows charge, the battery is locked into its mount, and both brake levers are fully released - brake cut-off sensors disable drive while a lever is pulled. If an error code appears, note it and contact support before riding.
The suspension bottoms out on landings.+
Set static sag first: too little preload lets the bike sit deep in its travel and use up stroke before the hit arrives. Add preload to bring sag into the range in the manual, then increase compression damping a click or two at a time until landings feel controlled rather than harsh.
The brakes feel spongy at the lever.+
Sponginess in a hydraulic system usually indicates air in the line or a fluid leak. Stop riding and have the system bled and inspected. Do not continue on a 50 mph machine with compromised brakes.
Range is well below 100 km.+
Average speed is the usual cause, since energy use rises steeply with speed. Check tire pressure, use the economy ride mode on transport sections, and account for temperature - cold reduces available capacity until the pack warms up.
The chain is noisy or has developed a tight spot.+
A tight spot usually means uneven wear or a stiff link, often after aggressive cleaning damaged the O-rings. Re-set tension at the tightest point of rotation, lubricate, and inspect the sprocket teeth. Replace the chain and both sprockets as a set if teeth are hooked.
The display shows an error code and the bike will not move.+
Switch the key off, wait 30 seconds, and switch it back on. If the code returns, note the exact code and the conditions that produced it, then contact support - codes map to specific faults in the controller, motor, throttle, or battery circuits.
Certifications & Standards
The HKM-624083 is produced in a facility operating under an ISO 9001 quality management system. The motor, battery, and electronics are rated to IP65, and the cells and 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.
- IP65 - Ingress protection rating for the motor, battery, and electronics against dust and low-pressure water jets.
- ISO 9001 - Quality management system certification held by the manufacturing facility.
Important Safety Notes
This is a full-size electric enduro with an 8000 W motor and a documented top speed of 50 mph. It is intended for adult riders with off-road experience. Read the manual fully before the first ride, set suspension sag for your weight, and spend the first session in an open area learning throttle and brake response before riding technical terrain.
- Wear a certified off-road or motocross helmet on every ride, with goggles, gloves, boots, and body armour appropriate for a 50 mph machine.
- Do not exceed the 331 lb (150 kg) maximum load, which includes the rider and all carried gear.
- Ride on private land or in designated off-road areas. Check local law regarding electric motorcycle classification before any on-road use.
- Set static sag before your first serious ride. Suspension outside its intended range reduces both grip and control.
- Bed in the brake pads with 10-15 progressive stops during the first ride before using full braking effort.
- The IP65 rating covers rain and splashes, not submersion. Avoid deep water crossings and never pressure-wash connectors, seals, or bearings.
- Charge only with the supplied charger, indoors, at room temperature, on a non-flammable surface, and never leave a charging pack unattended overnight.
- Do not open, puncture, or modify the battery pack. Damaged lithium packs can vent and ignite.
HKM-624083 · 8000 W permanent-magnet mid-drive · 72 V removable lithium with smart BMS · 50 mph (80 km/h) top speed · 62-81 mi (100-130 km) range · 90/100-19 knobby tires · inverted fork with 200 mm (7.9 in) travel and adjustable monoshock · hydraulic discs 220 mm front and 200 mm rear · reinforced tubular steel frame · sealed O-ring chain · 35 in seat height · 12.6 in ground clearance · 331 lb (150 kg) max load · IP65 rated. Specifications are provided for reference; actual performance varies with rider weight, terrain, tire pressure, temperature, and riding style. Range figures are measured under mixed trail riding at moderate throttle. This page describes the product only and is not legal advice regarding vehicle classification - confirm local regulations before riding anywhere other than private land.
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