Balance Bikes >>
HKM-4859091 12-Inch Electric Balance Bike for Young Riders with a 250W Brushed Motor, 36V Battery and Disc and Drum Brakes
HKM-4859091
Disc and Drum, Stopping Both Ways
The HKM-4859091 is a 12-inch electric balance bike with 16-inch wheel options, built around a 250W brushed motor and a 36V 2.5Ah lithium battery - with a 5.0Ah pack available for longer sessions. Stopping is handled twice over: disc and drum brakes work together for secure, predictable slowing. The full shockingproof aluminium alloy frame pairs with a steel fork and carbon fibre rims at 11 kg, the no-pedal design keeps balance the whole lesson, and the 50 kg load rating carries growing riders for years.
Key Features
Six details that define the HKM-4859091.
Disc and Drum, Together
The braking is doubled up: a disc brake for responsive, modulated stops and a drum brake for sealed, weatherproof reliability. Together they give secure stopping in every condition, which is the kind of redundancy usually reserved for much bigger bikes.
250W Brushed Motor
The 250W brushed motor provides smooth, dependable pull sized for young riders, with power that arrives gently and predictably. It is proven technology that asks nothing of the rider except to enjoy the ride.
36V Battery, Two Capacities
The 36V lithium pack comes in 2.5Ah as fitted with a 5.0Ah option for longer sessions. Both unclip for charging at the wall, and both carry enough for a full session of yard laps and neighbourhood exploring.
No Pedals, Balance First
The no-pedal design puts every ounce of attention on balance and steering, the two skills every later bicycle needs. Riders push, glide and brake at their own pace, so confidence arrives before speed does.
Alloy Frame, Steel Fork
The full shockingproof aluminium alloy frame absorbs the hits of early riding while the steel fork holds the front end steady. Carbon fibre rims shave rotating weight, so every push turns into glide more efficiently.
11 kg, Rated to 50 kg
At 11 kg the bike is light enough for small riders to steer and adults to lift, and the 50 kg load rating keeps the fit working through the growth years. Wheel options of 12 and 16 inches set the starting point.
Overview
A 12/16-inch no-pedal balance bike with a 250W motor, 36V battery and disc plus drum brakes.
The HKM-4859091 is a 12-inch electric balance bike built for riders who are still learning what a bike is, on 12 or 16-inch wheels. A 250W brushed motor pulls smoothly from a 36V lithium pack in 2.5Ah or 5.0Ah capacity, and braking is doubled with both disc and drum systems for secure stops in any weather. The no-pedal design keeps balance and steering as the whole lesson, the full shockingproof aluminium alloy frame and steel fork hold the weight to 11 kg, and carbon fibre rims make every push more efficient. With a 50 kg load rating, it is a first bike sized to be ridden for years.
Two Brakes, One Habit
Disc response with drum reliability.
The disc brake teaches modulation and the drum brake guarantees it in the wet. Together they stop the HKM-4859091 the same way every time, in every weather, which is exactly what a first brake should do.
Full Specifications
Everything worth knowing, in one table.
Why Two Brake Systems on One Small Bike
Redundancy is a safety feature you never notice.
Most first bikes carry one brake and hope it suits every day. The HKM-4859091 carries two: a disc brake whose bite builds progressively under small hands, and a drum brake sealed inside the hub where rain, dust and grass cannot reach it. On dry pavement the disc leads with responsive, modulated stopping; in wet weather the drum keeps working exactly as it did before the rain started. A rider never thinks about the difference, which is the point. Around the brakes runs a 250W brushed motor from a 36V pack in 2.5Ah or 5.0Ah, a no-pedal alloy frame with a steel fork, and carbon fibre rims at 11 kg total. The 50 kg load rating keeps it all right through the growth years.
What’s in the Box
What arrives in the box, ready to build.
1 x 12-Inch Balance Bike
Frame, fork and wheels come fitted from the box
1 x 36V Lithium 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-4859091
Six reasons families pick the HKM-4859091.
Braking That Never Quits
Disc and drum brakes together mean a dry-day bite and a wet-day guarantee on one bike. The stopping stays predictable in every season, which is the trust a first brake is meant to build.
Skills Before Speed
The no-pedal design makes balance and steering the whole lesson. Riders who learn this way usually skip the training-wheel stage entirely when the pedal bike arrives.
Power That Stays Gentle
The 250W brushed motor pulls smoothly and predictably from a standstill. It is assistance sized for young riders, never a surprise, and it makes longer rides possible without stealing the effort.
A Battery for Every Session
The 36V pack comes in 2.5Ah with a 5.0Ah option, so short yard laps and long neighbourhood loops both have a pack that fits. Both charge simply at the wall.
Frame That Shrugs It Off
The full shockingproof aluminium alloy frame and steel fork absorb the knocks of early riding, while carbon fibre rims keep the rotating weight low. It rides lighter than it stands.
Built for the Growth Years
At 11 kg with a 50 kg load rating and 12/16-inch wheel options, the bike fits from the first wobbly lap well into confident running. One purchase, years of use.
Frequently Asked Questions
Straight answers about the HKM-4859091.
What ages and heights does the HKM-4859091 fit?
The bike suits young riders on 12 or 16-inch wheels, at 11 kg with a 50 kg load rating, so the fit works from first rides through the growth years. The honest check is both feet flat while seated with knees slightly bent and hands reaching the bars at comfortable extension. Because this is a powered bike with two brake levers, confirm the rider can squeeze both smoothly before opening the throttle.
How do the disc and drum brakes work together?
The disc brake gives responsive, modulated stopping - the bite builds progressively as the lever moves. The drum brake lives sealed inside a hub, where rain, dust and grass cannot reach it, and it delivers the same stopping power in every weather. In practice the disc leads on dry pavement and the drum guarantees the stops when conditions turn. Neither needs maintenance beyond the weekly squeeze test and a wipe-down.
How does a no-pedal balance bike work?
There are no pedals to find: riders sit, push with their feet, and lift once they glide. The 250W motor adds assistance as confidence grows, and the brake levers teach real stopping habits. Balance and steering are the hard parts of cycling and pedalling is the easy one, which is why most balance-bike graduates skip training wheels entirely.
Which battery should I choose, 2.5Ah or 5.0Ah?
The fitted 2.5Ah pack covers typical yard and neighbourhood sessions; the 5.0Ah option suits longer loops or households where the bike rides every day without a lunchtime charge. Both are 36V lithium packs that unclip for charging at any wall socket. Charge indoors at room temperature on a hard surface, unplug once the indicator shows full, and bring the pack inside on cold days.
What assembly and upkeep are involved?
Assembly covers the handlebar, seat height and battery seating, with the supplied hex keys and the manual. Beyond that: tire pressure weekly, a brake squeeze test before every ride and a wipe-down after dusty ones. The brushed motor and sealed drum ask nothing beyond the walkaround, and the carbon fibre rims need only a check that the spokes stay true. The whole routine fits a weekend morning.
Is 11 kg light? Can little riders handle it?
For a powered balance bike with a steel fork and dual braking, 11 kg is a workable weight: light enough for small riders to steer at walking pace and for adults to lift into a boot. The carbon fibre rims keep the rotating weight low, which matters more than static weight for how the bike feels on every push. The 50 kg load rating means the same bike stays right as the rider grows.
Quick Troubleshooting
When the HKM-4859091 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 twenty minutes 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.
The run time keeps shrinking
Compare riding style before blaming the pack, because grass and climbs use far more per minute than smooth pavement. 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.
One of the brakes feels weak
Identify which lever feels off first, because the disc and the drum fail differently. For the disc: check the rotor is clean and true, then follow the manual for cable tension. For the drum: check the cable and free travel, since the sealed mechanism rarely fades on its own. If a lever still feels weak with the cable set, note which brake and when the feel changed, then contact support.
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.
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. If cutouts continue on flat ground with a full, cool pack, note the conditions in use and contact support. Brushed motors are simple systems, so persistent cutouts usually trace to a connector rather than the motor itself.
A wheel feels out of true
Spin each wheel and watch the rim against the brake pads or fork. Carbon fibre rims rarely go out of true on their own, so a wobble usually traces to a knock or a loose spoke. Check spoke tension evenly around the wheel and re-true small deviations following the manual. If the wobble is visible or the rim rubs persistently, contact support rather than forcing the correction.
Service & Policies
Coverage that rides every yard 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-4859091.
The HKM-4859091 is a powered balance bike for young riders, so a certified helmet is mandatory before every ride, with closed shoes and snug laces completing the kit. Start in a fenced yard or on flat, open ground until the rider brakes smoothly by habit, with an adult controlling the pace throughout. Confirm the battery is fully latched before each ride, squeeze both brake levers to feel the bite, and check the axle and stem hardware for torque. Keep fingers, laces and loose clothing clear of the rear hub while powered, and let hot parts cool after sessions. Charge the 36V pack indoors at room temperature on a hard surface, unplug once the indicator shows full, and never carry a passenger.
HKM-4859091 - 12-inch no-pedal electric balance bike with 16-inch wheel options, a 250W brushed motor, a 36V lithium battery in 2.5Ah or 5.0Ah, disc and drum brakes, a full shockingproof aluminium alloy frame with steel fork and carbon fibre rims at 11 kg and a 50 kg load rating. 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.
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.
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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.
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Return Eligibility
30-Day Window
Request a return within 30 days of delivery.
Original Condition
Unworn or unused, with tags and original packaging.
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A receipt or order number is required.
Fast Refund
Refund processed within 10 business days.
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Returns & Exchanges Overview
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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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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
