Balance Bikes >>
HKM-2335955 20-Inch Electric Balance Bike for Kids and Adults with 600W Brushless Motor, 36V Battery and Hydraulic Disc Brakes
HKM-2335955
600W Hub, 20-Inch Wheels
The HKM-2335955 is an electric balance bike built around a 600W brushless hub motor in the rear wheel. A 36V lithium battery sits in a quick-release waterproof box beneath the frame, and two speed modes set the pace: training mode holds 20 km/h while advanced mode opens up to 40 km/h. Hydraulic disc brakes sit front and rear, a suspension fork with 80mm of travel softens the front end, and the saddle adjusts through 58 to 68 cm so the same bike fits a growing rider. Two colourways are available.
Key Features
Six details that define how the HKM-2335955 is built and how it rides.
600W Brushless Hub Motor
The motor lives inside the rear hub, so there is no chain to oil, no belt to tension and no gearbox to service. Power goes from the motor straight into the wheel, and the ride stays quiet because nothing turns outside of it.
Two Speed Modes
Training mode holds the bike at 20 km/h, which is enough to learn the throttle and the brakes without the front end getting away. Advanced mode lifts the ceiling to 40 km/h for riders who have the ground and the judgement to use it.
Hydraulic Disc Brakes
Hydraulic discs sit front and rear, so stopping power stays consistent in the wet and does not fade the way cable pulls do. One finger is enough on the lever, which keeps smaller hands in control of both ends of the bike.
An 80mm Suspension Fork
The front fork carries 80mm of travel on a custom three-bolt mechanism, taking the sting out of kerbs, gravel and rough fields before it reaches the handlebar. The front wheel stays planted where a rigid fork would skip.
A Quick-Release Battery
The 36V lithium pack slides out of its waterproof box beneath the frame in seconds, so it charges on a bench rather than beside the bike. The box locks back in with a click and keeps the contacts out of the weather.
A Saddle That Grows
The saddle moves through 58 to 68 cm of seat height, so the same frame carries a rider from their first balance-bike season through to their teens. The FXB saddle sits on a CNC alloy hold hoop that takes the daily drops.
Overview
A 600W hub motor, two speed modes and hydraulic discs on a 20-inch frame.
The HKM-2335955 is a 20-inch electric balance bike for kids and adults. Power comes from a 600W brushless hub motor in the rear wheel, fed by a 36V lithium battery in a quick-release waterproof box under the frame. Two speed modes set the pace: training mode holds 20 km/h for first rides, and advanced mode opens up to 40 km/h when the ground and the rider are ready. Hydraulic disc brakes sit at both ends, and an 80mm suspension fork keeps the front wheel tracking over gravel and kerbs. The saddle runs from 58 to 68 cm, so one bike fits a growing rider for seasons. A range of 20 to 30 km per charge covers the after-school loop or a morning at the field.
Power From the Rear Hub
One motor in the rear wheel, nothing else to maintain.
The 600W brushless hub motor sits inside the rear wheel, so drive goes straight into the tyre with no chain, no belt and no sprocket to clean or adjust. It pulls smoothly from a standstill and stays quiet on the move.
Full Specifications
What the motor, the battery and the frame are made of.
Wheels and Control
How the wheels, the fork and the brakes work together.
The 20-inch wheels run on one-piece magnesium alloy rims with six spokes each, so there is no spoke bed to keep in true and nothing to rattle loose over rough ground. KENDA all-terrain rubber wraps both wheels with a knobby tread that grips grass, gravel and hardpack. Up front, the suspension fork carries 80mm of travel, absorbing the hits before they reach the handlebar. Hydraulic disc brakes on both wheels bring the bike back from either speed mode with one finger, and the thumb throttle meters the power in as gradually as the rider wants. Footrests fold out from the frame for cruising.
What’s in the Box
Everything needed to get riding, right out of the box.
1 x Balance Bike, Frame and Wheels
The 20-inch bike with fork, brakes and throttle fitted
1 x 36V Battery and Box
The lithium pack seated in its waterproof quick-release box
1 x Battery Charger
The mains charger for the 36V lithium pack
1 x FXB Saddle on Seat Post
The saddle and CNC alloy hold hoop, ready to set
1 x Manual and Setup Guide
Charging, mode switching and care guidance sheets
1 x Warranty Card
Registration and coverage details for the 24-month warranty
Why Choose the HKM-2335955
Six further reasons riders choose the HKM-2335955.
Built for Real Ground
Grass fields, gravel paths and broken pavement are where this bike is meant to run. The knobby KENDA tread digs in where a slick tyre would spin, and the suspended fork keeps the front wheel following the ground rather than bouncing off it.
Stops With One Finger
Hydraulic discs at both wheels give consistent, modulated braking in the dry and in the wet. Riders learn to brake early and evenly instead of grabbing a cable brake and hoping for the best.
Charges Anywhere
The battery slides out of its waterproof box in seconds, so it can charge on a bench, a desk or a kitchen counter rather than next to wherever the bike ended up. A full top-up costs pennies.
Grows With the Rider
The saddle moves through 58 to 68 cm, so the frame that fits a child in training mode still fits the same rider in advanced mode two seasons later. One bike covers the whole curve.
Quiet by Design
With the motor sealed in the rear hub there is no chain slap, no belt whine and no gearbox noise. Neighbours stay unaware, and the only maintenance left is brakes, tyres and a wipe-down.
Light Enough to Lift
At 19.0 kg the bike lifts into a boot or up a step without a second person, and the 1450 x 680 x 900 mm footprint slots into the back of a hatchback with the seat folded.
Frequently Asked Questions
Quick answers about the HKM-2335955 electric balance bike.
How fast does it go?
Two modes set the ceiling. Training mode holds the bike at 20 km/h (12 mph), which suits a first season of learning throttle and brake control in an open space. Advanced mode opens the motor up to 40 km/h (25 mph) for riders with the space and the judgement to use it. Switching between the modes takes a moment with the bike stopped, and most families start every session in training mode before stepping up once the ground is clear and the rider is settled. The setting does not drift with the battery level, so the bike behaves the same on a full pack as on the last bar.
How far can it ride on one charge?
A full charge carries the bike 20 to 30 km (12 to 19 miles). Where a rider lands inside that range depends on the ground, the rider’s weight and how much of the ride sits in advanced mode, because flat gravel at training speed uses far less per kilometre than repeated climbs at full throttle. The battery reads out its state of charge, so it is easy to see how much is left before heading back, and the pack slides out of its box to charge anywhere there is a socket. Recharging happens at a household socket with the supplied charger, and topping up part way does not harm the pack.
Is it suitable for adults?
Yes, within reason. The saddle runs from 58 to 68 cm and the 20-inch wheels take a rider well past the balance-bike age, so teenagers and lighter adults fit the frame with room to set the saddle. The bike carries its 41.9 lb low in the frame, which keeps it manageable at walking pace and stable once moving. Riders beyond the saddle range will want a full-size electric bike instead, and every rider should follow local rules for powered vehicles.
What colours does it come in?
Two: black and white. The frame and the seat build are identical on both versions, so only the panel and accent colours change between them. Both share the same 600W hub motor, the same hydraulic disc brakes and the same adjustable saddle, which means the choice comes down to which colour hides the dust better in your household. Check the gallery images for each colourway before ordering, because they show the trim and the graphics exactly as shipped, and the saddle and grips are the same on both.
Does it need assembly?
The bike arrives with the wheels, the fork, the brakes and the throttle already fitted. Out of the box the jobs are small: slide the battery onto its rail until it latches, set the saddle height with the seat clamp, and fold the footrests down from the frame. That is the whole setup, which leaves time for a first ride in training mode on the same afternoon. The tools needed for the saddle clamp are common household items, and the manual walks through each step with the parts labelled exactly as they appear on the bike.
How does the throttle work?
A thumb lever on the right grip meters the power in proportionally, so a light press walks the bike forward and a fuller press brings the motor in harder. Young riders usually need one session to learn how far to press, which is exactly why training mode exists. The lever only works when the bike is powered on, and the bike defaults to off whenever the battery is reseated or the pack runs flat.
Quick Troubleshooting
Common HKM-2335955 issues and what to check first.
The bike will not power on
Start at the battery. Lift the release, pull the pack out and seat it back on its rail until the latch clicks, because a box that is one click short of home will not make contact. Press the power button and watch for the indicator; if the lights come on but the throttle does nothing, the bike is still in its power-off state between modes. If nothing lights at all, put the pack on charge for half an hour and try again. Check the connector inside the box for grit or bent pins while the pack is out, since a contact that does not sit flush will imitate a dead pack even when the cells are full.
The brakes feel soft
Hydraulic discs need a short bedding period on a new bike, so expect the first few stops to feel lighter than the ones after. Pumping the lever with the wheel raised can help seat the pads. If the lever reaches the grip without biting, check for a pad contaminated by chain oil or tyre spray, since either will glaze the surface and stop the disc from gripping. A persistent soft lever after bedding points to air in the line, which a bleed kit or a service visit fixes, and a lever that pulls back slowly on its own points to the same thing. Keep oil and spray away from the discs whenever you clean the bike.
The battery will not charge
Check the charger first: its indicator should change when the pack connects, and both connectors should seat fully with no debris in the port. Charging works best at room temperature, because a pack that has just come in from the cold will refuse a fast charge until it warms up. If the charger shows a steady fault light, unplug for a minute and retry once. A pack that will not take a charge after that should come out of its box and stay out until it has been tested, because leaving a faulty pack on the bike only deepens the discharge.
The motor cuts out on a climb
Sustained full-throttle climbs draw the hardest current the system sees, and the controller protects itself by trimming power when it runs hot or when the pack runs low. Let the bike cool for a few minutes and check the charge state, because a low pack sags exactly when the demand peaks. If the cutouts happen on flat ground at partial throttle with a warm pack, check that the battery box is fully latched, since vibration can work a half-seated pack loose mid-ride. Repeat cutouts with a full pack on easy ground are worth a service look before the next ride, because a climb that once felt easy but now cuts out early is usually a tired pack rather than a tired motor.
The throttle feels delayed
Check the mode first, because training mode intentionally caps and softens the response, and a rider who has just stepped up from it will feel the difference immediately. Next, confirm the battery box is fully latched, since a half-seated pack can sag under load and make the response feel vague. If the delay persists with a full pack in advanced mode, the controller connection is worth a service look rather than a home fix.
The front fork squeaks
A dry squeak from the front end usually comes from the fork stanchions rather than the headset. Wipe the lowers with a damp cloth, and ask a bike shop for a suitable suspension lubricant rather than reaching for a general purpose spray, because the wrong product can attack the seals. If the noise continues after cleaning, or the fork starts to feel notchy through its travel, the fork is due for a service rather than more lubricant.
Service & Policies
Coverage that keeps working long after the bike box arrives.
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-2335955.
The HKM-2335955 is a powered balance bike capable of 40 km/h, so every rider wears a certified helmet on every ride, with gloves and closed shoes strongly recommended. Riders under the local legal age for powered vehicles ride under adult supervision, and the bike belongs on private ground or other permitted terrain rather than public roads. Start every new rider in training mode until throttle and brake control are consistent. Check that the battery box is fully clicked home before each ride, keep hands and clothing clear of the rear hub while the wheel turns, and never carry a passenger or tow anything. Charge the battery indoors at room temperature, and check both brake levers and tyre condition before every session.
HKM-2335955 - 20-inch electric balance bike with a 600W brushless rear hub motor, a 36V lithium battery in a quick-release waterproof box, two speed modes up to 25 mph, hydraulic disc brakes front and rear, an 80mm suspension fork, KENDA all-terrain tyres, an adjustable FXB saddle and fold-out footrests. Read the manual before first use. Nothing here is safety certification advice. Ride within local laws.
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.
What Is Covered
Manufacturing Defects
We replace items with material or workmanship flaws at no charge.
Performance Failures
Free repair or replacement if the product fails under normal use.
Accidental Damage
One-time courtesy replacement at a reduced price.
Zero Hidden Fees
All shipping costs for replacements and returns are covered.
How to File a Claim
How This Differs from the Warranty
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.
We want you to be completely satisfied with your purchase. If for any reason you are not fully happy, you may return your item within 30 days of delivery for a full refund. No lengthy forms, no unnecessary questions.
Our return policy is built on a simple principle: if the product is not right for you, we will make it right. We understand that online shopping involves trust, and we work hard to earn that trust with every order.
Return Eligibility
30-Day Window
Request a return within 30 days of delivery.
Original Condition
Unworn or unused, with tags and original packaging.
Proof of Purchase
A receipt or order number is required.
Fast Refund
Refund processed within 10 business days.
How to Start a Return
Returns & Exchanges Overview
Damages & Exchanges
Please inspect your order as soon as it arrives. If the item is defective, damaged, or incorrect, contact us immediately so we can evaluate the issue and make it right. For exchanges, the fastest option is to return the original item and place a new order for the replacement.
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.
Quick Turnaround
Claims assessed within 1 business day.
Transferable
Warranty follows the product, not the owner.
How to File a Warranty Claim
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Our delivery process is designed for transparency. From the moment you place your order to the moment it reaches your door, you receive clear updates at every stage. We carefully inspect each product before dispatch, and we provide tracking information as soon as your order ships.
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Delivery Process
Delivery Time Summary
Cancellations & Taxes
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Our support specialists are trained to handle a wide range of requests, from product recommendations to technical troubleshooting. No matter the question, you can expect a professional and friendly response.
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Modify orders, track shipments, or speed up delivery.
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Start claims or returns quickly and easily.
Technical Troubleshooting
Step-by-step solutions for product issues.
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
