Balance Bikes >>
HKM-7447763 20-Inch Electric Balance Bike for Young Riders with an 800W Motor, Hydraulic Disc Brakes and Adjustable Suspension
HKM-7447763
The PRO EXTREME: 800W, Fully Suspended
The HKM-7447763 is the FXB01-20PRO EXTREME, the flagship of the 20-inch platform. An 800W brushless hub motor paces three settings at 10, 30 and 45 km/h, the double-shoulder hydraulic suspension adjusts to the rider, and the full shock absorption frame takes the hits before they arrive. Hydraulic disc brakes stop both wheels, the removable waterproof 36V 10Ah battery charges anywhere, and the adjustable seat spans 58 to 68 cm for riders up to 70 kg.
Key Features
Six details that define the PRO EXTREME.
800W Brushless Hub Motor
The 800W brushless motor lives in the hub and delivers impressive power through all three speed settings. It pulls smoothly from a standstill, climbs without complaint, and asks for no chain maintenance across the whole season.
Three Settings, 10-30-45 km/h
Three pace settings make progression built in: 10 km/h for the learning laps, 30 for the confident stage and 45 for riders who have earned the top of the range. The steps are wide enough to mean something and the switch stays under adult control.
Double-Shoulder Hydraulic Fork
The double-shoulder hydraulic suspension adjusts to the rider and the terrain, absorbing the hits that rattle small hands and send rigid forks off line. Set for the rider, the front wheel keeps tracking when the ground turns rough.
Hydraulic Discs, Both Wheels
Hydraulic disc brakes front and rear give one-finger stopping power with a bite that modulates instead of grabbing. At 45 km/h the brakes are not a formality - and this bike carries the real ones, at both ends.
Removable Waterproof 36V 10Ah Pack
The 36V 10Ah battery unclips from the frame for charging anywhere and seals against the weather for riding. The big capacity backs the top settings with real range, and charging never means reaching the bike itself.
58-68 cm Seat, 70 kg Rating
The adjustable seat spans 58 to 68 cm, so the fit tracks the rider through the growth years, and the 70 kg load rating keeps the bike right as skills and size develop. The aluminium alloy frame ties it together light and durable.
Overview
A 20-inch balance bike with 800W power, hydraulic suspension and brakes, and a removable 36V 10Ah battery.
The HKM-7447763 is the FXB01-20PRO EXTREME, a 20-inch electric balance bike built for riders ready to take their riding to the next level. An 800W brushless hub motor paces three settings at 10, 30 and 45 km/h, hydraulic disc brakes stop both wheels, and the double-shoulder hydraulic suspension with a full shock absorption frame keeps the ride smooth over varied terrain. The removable waterproof 36V 10Ah battery charges anywhere and backs the top settings with real range, the adjustable seat spans 58 to 68 cm, and the 70 kg load rating covers the growth years. It is where fun meets functionality, with the hardware to back the name.
Ten to Forty-Five, Three Steps
Progression you can set with a switch.
The three settings pace the ride at 10, 30 and 45 km/h, and each step means something. Low teaches, middle builds, high rewards - and the switch belongs to the adults until the rider earns it.
Full Specifications
Everything worth knowing, in one table.
Why Full Suspension Belongs at 45 km/h
Speed is only fun when the bike stays settled.
Every bump a wheel takes at speed arrives as a force looking for somewhere to go, which is why the PRO EXTREME answers with suspension at both ends. The double-shoulder hydraulic fork adjusts to the rider and soaks up the front-end hits, the full shock absorption frame handles the rest, and the result is a bike that stays settled when the pace climbs through 30 toward 45 km/h. Around the suspension runs an 800W brushless hub paced in three settings, hydraulic disc brakes at both wheels, and a removable waterproof 36V 10Ah pack that charges anywhere. The aluminium alloy frame keeps the weight manageable, the adjustable 58-68 cm seat tracks the rider, and the 70 kg load rating spans the years this bike is built to serve.
What’s in the Box
What arrives in the box, ready to build.
1 x 20-Inch PRO EXTREME Bike
Frame, fork and wheels come fitted from the box
1 x 36V 10Ah Battery
Seated in the mount and matched to the charger
1 x Mains Charger
Matched to the battery pack from the factory
1 x Seat and Post
Fitted, ready to set for the height of the rider
1 x Manual and Hex Keys
Setup sheets with the tools supplied in the pack
1 x Warranty Card
Registration details for the records at home
Why Choose the HKM-7447763
Six reasons families pick the HKM-7447763.
Power With Real Range
The 800W brushless hub and the 36V 10Ah pack are matched to each other, so the top settings come with the range to enjoy them. Power without range is a tease; this bike is not that.
Suspension at Both Ends
The adjustable hydraulic fork and full shock absorption frame keep the bike settled over rough ground. Comfort is what keeps the lessons going when the terrain gets interesting.
Brakes That Match the Pace
Hydraulic disc brakes at both wheels give one-finger, progressive stopping that suits the speeds this bike reaches. Nothing about the braking is a formality.
A Pace for Every Stage
Ten, thirty and forty-five km/h are three distinct chapters of riding. The bike grows with the rider through all of them, and the adults hold the switch.
Battery Out, Charging Simple
The removable waterproof pack charges at any wall socket without parking the bike beside one. It is the convenience feature that gets used every single day.
A Fit That Lasts
The adjustable 58-68 cm seat and 70 kg load rating keep the bike right through the growth years. The aluminium alloy frame stays light while carrying all of it.
Frequently Asked Questions
Straight answers about the HKM-7447763.
What ages and heights does the HKM-7447763 fit?
The PRO EXTREME suits riders ready for the top of the 20-inch platform, with an adjustable seat spanning 58 to 68 cm and a 70 kg load rating. The honest check is both feet flat while seated with knees slightly bent and hands reaching the bars at comfortable extension. Because the top setting reaches 45 km/h, confirm the rider has full one-finger control of both hydraulic brake levers before any move beyond the low setting.
How do the three speed settings work?
The settings pace the bike at 10, 30 and 45 km/h through the 800W brushless hub, and the switch belongs to the adults. Start at 10 km/h on flat, open ground until throttle and both brake levers are under smooth control, then move up one setting at a time on ground with clear sight lines. The top setting is for experienced hands on open ground, and it stays earned rather than assumed.
How should the suspension be set up?
Set the double-shoulder hydraulic fork so it compresses about a fifth of its travel with the rider seated: too soft and it pogo-sticks under braking, too firm and it might as well be rigid. After muddy rides, wipe the stanchions clean so grit never drags past the seals. Recheck the setting after growth spurts, because the right setup follows the rider, and store the bike fork-up so the seals stay lubricated evenly.
How does the removable battery work?
The 36V 10Ah pack unclips from the frame and charges at any wall socket, so charging never means parking next to an outlet. It is waterproof for riding in damp conditions, and the 10Ah capacity backs the higher speed settings with real range. For the healthiest battery life, charge indoors at room temperature on a hard surface, unplug once the indicator shows full, and bring the pack inside on cold days.
Do hydraulic brakes need maintenance?
Very little. The system is sealed, so there is nothing to lubricate, and pad wear is slow when the levers are used properly. Check the lever feel weekly: a bite well before half travel means all is well, a spongy lever means air in the line and a visit to support. Keep the rotors clean with isopropyl alcohol after muddy rides, because a firm lever with a clean rotor is the healthy baseline.
What assembly and upkeep are involved?
Assembly covers the handlebar, seat height, suspension setup and battery seating, with the supplied hex keys and the manual. Beyond that: tire pressure weekly, a brake squeeze test before rides, clean stanchions after dusty rides and a wipe-down. The brushless drive lives in the hub, so there is no chain to oil or tension all season. The whole routine fits a weekend morning.
Quick Troubleshooting
When the HKM-7447763 needs attention, start here.
The bike will not power on
Unclip the pack and seat it back until the latch clicks, because a pack just short of home makes no contact. Press the power button and watch for the indicator. If it stays dark, charge for half an hour and retry, check the mount contacts for grit, and confirm the wall socket with another device first. Cold packs read empty until warmed, so bring the bike indoors before judging a winter battery, and make the click part of the pre-ride routine.
The brake lever feels spongy
A spongy hydraulic lever means air in the line, not a worn pad, and bleeding the system is a job for support or a shop. First confirm the lever still bites and the rotor is clean, then contact support with a note of when the feel changed. Spongy levers are a support job, not a trailside fix, so stay in the 10 km/h setting until the firm bite returns.
The fork lost its smoothness
Wipe the stanchions with a clean cloth and check for dried mud, which drags past the seals. Cycle the fork through its travel a few times to redistribute the lubricant. If the stiction persists with clean stanchions, note when it started and contact support before disassembling anything. A sag check takes a minute and keeps the setup honest after big changes in rider weight.
The range keeps shrinking
Compare riding style before blaming the pack, because hills and the 45 km/h setting use far more per kilometre than cruising at 10. Check tire pressure, since soft tires cost range twice. Cold weather trims every lithium pack. If nothing has changed, run one full uninterrupted charge cycle and retest the same loop, and log the loop you retest on before replacing anything.
The motor cut out mid-ride
A pack running low or hot will step back before it dies, so start with a full charge and a cool-down. Check the throttle connector for a half-seated plug and confirm the speed setting has not been nudged. If cutouts continue on flat ground in the low setting with a full, cool pack, note the setting in use and contact support. Log when it happens: climbs point to the pack, flat-ground cutouts point to the controller.
The charger light never turns green
Confirm the wall socket with another device, then reseat the charger plug at both ends. Check the pack mount contacts for grit and charge indoors at room temperature, because cold packs refuse a full cycle. If the indicator still never completes, stop forcing cycles and contact support with a note of how long charging has taken recently. Do not leave a stalled pack on the charger unattended overnight while you wait to retest.
Service & Policies
Coverage that rides every trail with you.
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.
Important Safety Notes
Read these notes before the first ride on the HKM-7447763.
The HKM-7447763 is a high-performance 20-inch balance bike with hydraulic braking and a 45 km/h top setting, so a certified helmet is mandatory before every ride, with closed shoes and snug laces completing the kit. Start in the 10 km/h setting on flat ground until both levers and the throttle are under smooth control, with an adult approving every change. Confirm the battery is latched, squeeze both levers for the bite, and check the suspension hardware for torque. Keep fingers, laces and loose clothing clear of the hub, rotors and stanchions while powered, and let hot parts cool. Charge the 36V pack indoors at room temperature on a hard surface, unplug once the indicator shows full, and never carry a passenger.
HKM-7447763 - 20-inch FXB01-20PRO EXTREME electric balance bike with an 800W brushless hub motor, three speed settings of 10, 30 and 45 km/h, hydraulic disc brakes front and rear, double-shoulder adjustable hydraulic suspension with full shock absorption, a removable waterproof 36V 10Ah battery and a 58-68 cm adjustable seat rated to 70 kg. Read the manual before first use. Nothing here is safety certification advice.
Every product we offer includes a 180-day purchase protection plan at no additional cost. This coverage extends beyond a standard warranty, reflecting our confidence in product quality and our ongoing commitment to your satisfaction.
The protection plan is designed to provide practical help in real-world situations. Whether you encounter a manufacturing issue, a performance problem, or an unexpected accident, our team is ready to assist with clear, fair solutions.
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Manufacturing Defects
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Free repair or replacement if the product fails under normal use.
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One-time courtesy replacement at a reduced price.
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The 180-day purchase protection includes accidental damage and performance failures that are typically not covered by a standard warranty. It provides an additional layer of support during the first six months after purchase, giving you greater confidence and peace of mind.
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Request a return within 30 days of delivery.
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Refund processed within 10 business days.
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We believe in the quality of our products, and we want you to share that confidence. Every product is backed by a 24-month warranty covering all structural and functional components, including zippers, buckles, straps, and fabric integrity.
The warranty is designed to be simple and accessible. You only need your proof of purchase to begin a claim, and our team will assess the issue promptly. If a manufacturing issue arises, we will make it right.
What the Warranty Covers
Comprehensive Coverage
Every part warranted for two full years.
Free Repair or Replacement
Whichever is faster, at no cost to you.
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Claims assessed within 1 business day.
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Warranty follows the product, not the owner.
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Contact Information
24/7 Phone
+1 (209) 280-3200
support@hekomart.com
Address
3401 Dale Rd, Modesto, CA 95356
Support Hours
Available 24 hours a day, 7 days a week
