Balance Bikes >>
HKM-2133587 16 Inch 3-in-1 Electric Balance Bike FXB02-16PLUS for Ages 5-8, 350W Brushless Hub Up to 30 km Range Disc Brake
HKM-2133587
The 3-in-1 FXB02-16PLUS, Built to Grow
The FXB02-16PLUS is the versatile 3-in-1 balance bike for riders aged five to eight: a 350W brushless hub motor for smooth rides, adjustable speeds of 15 and 30 km/h, and up to 30 km of range per charge for extended adventures. The mechanical disc brake sits in the rear wheel for reliable stopping power, the sturdy steel fork with optional suspension smooths the terrains in between, and the lightweight aluminium alloy frame keeps the whole package easy to handle in four vibrant colors.
Key Features
Six details that define the HKM-2133587.
350W Brushless Hub Motor
The 350W brushless hub motor powers smooth rides with nothing fussy to maintain. It delivers its assistance right at the wheel, which is where a young rider can actually feel it and learn to use it.
15 and 30 km/h Speed Modes
Riders choose between usual speeds of 15 and 30 km/h, an excellent structure for beginners to gradually increase their riding skills. The lower mode builds instincts; the higher one rewards them.
Up to 30 km per Charge
With a remarkable range of up to 30 km per charge, kids enjoy extended adventures without constantly worrying about battery life. The park, the loop and the long way home all fit in one session.
Rear Mechanical Disc Brake
The mechanical disc brake sits in the rear wheel, providing reliable stopping power when needed. Rear placement keeps the braking stable and predictable for smaller hands.
Steel Fork, Optional Suspension
The sturdy steel fork holds the front end steady, with the option to add suspension as the terrain gets more ambitious. Either way, comfort and control travel with the rider.
Light Alloy Frame, Four Colors
The lightweight aluminium alloy frame provides durability without compromising ease of handling, in white, black, orange and lemon green. There is an option to match every personality.
Overview
A 16-inch 3-in-1 balance bike with a 350W brushless hub, 15 and 30 km/h modes and 30 km of range.
The FXB02-16PLUS is more than another bike; it is an investment in outdoor exploration, and the versatile 3-in-1 format is where that starts. Around it sits a genuinely complete package: a 350W brushless hub motor for smooth rides, adjustable speeds of 15 and 30 km/h so beginners gradually increase their skills, and up to 30 km of range per charge for adventures that do not keep checking the battery. Safety holds with a mechanical disc brake in the rear wheel, and the sturdy steel fork, with the option to add suspension, enhances comfort over various terrains. The lightweight aluminium alloy frame keeps handling easy for riders aged five to eight, in four vibrant colors that let every child pick their look.
Two Speeds, Growing Skills
15 to start, 30 when earned.

Riders choose between the usual speeds of 15 and 30 km/h, and the progression is the point: the low mode teaches, the high mode rewards. The 350W hub keeps both smooth, and the rear disc brake closes every run.
Full Specifications
Everything worth knowing, in one table.
One Bike, Three Ways to Grow
The 3-in-1 design earns its keep.
Kids change fast, and the FXB02-16PLUS is built to change with them. The 3-in-1 design, the adjustable 15 and 30 km/h speed modes and the suspension-ready steel fork all point the same direction: one bike that adapts instead of one that gets outgrown. The 350W brushless hub motor keeps the ride smooth at either speed, the battery delivers up to 30 km per charge for the long sessions, and the rear mechanical disc brake provides reliable stopping power throughout. The lightweight aluminium alloy frame carries riders aged five to eight through all of it, and four vibrant colors mean the bike they choose still feels like theirs a year later.
What’s in the Box
What arrives in the box, ready to build.
1 x 16-Inch FXB02-16PLUS Bike
Frame, fork and wheels come fitted from the box
1 x 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-2133587
Six reasons families pick the HKM-2133587.
A Platform That Adapts
The 3-in-1 design, adjustable speed modes and suspension-ready fork make one bike cover years of change. It adapts to the rider rather than being replaced by the next stage.
Skills, Graduated
The 15 and 30 km/h modes exist precisely so beginners can gradually increase their riding skills. The lower mode is where instincts form; the higher one is the graduation present.
Range for Big Days
Up to 30 km per charge is remarkable for a kids' balance bike, and it changes the shape of a weekend: the park, the trails and the long way home, all without battery anxiety.
Braking Where It Helps
The mechanical disc brake sits in the rear wheel, providing reliable stopping power with stable, predictable behavior. It is the calm system underneath the excitement.
Ready for Rougher Ground
The sturdy steel fork enhances comfort and control over various terrains, with the option to add suspension when the terrain gets ambitious. The bike grows toward adventure.
Durability Without Bulk
The lightweight aluminium alloy frame provides durability while staying easy to handle, so young riders in four vibrant colors get a bike that lasts and one they can manage.
Frequently Asked Questions
Straight answers about the HKM-2133587.
What ages is the FXB02-16PLUS designed for?
The bike is designed specifically for kids aged five to eight, with 16-inch wheels and a lightweight aluminium alloy frame that keeps handling easy at that stage. Fit beats birthdays: check that both feet rest flat on the ground while seated, knees slightly bent and hands reaching the bars comfortably. If the rider sits between sizes, go by reach and inseam rather than age alone.
How do the 15 and 30 km/h modes work?
Riders choose between the usual speeds of 15 and 30 km/h, which makes the bike an excellent teacher: stay in the lower mode until balance, throttle and the disc brake are under smooth control, then step up gradually. Adults should approve every change, and the mode should always suit both the skill of the rider and the ground of the day.
How far does it go on a charge?
The battery delivers a remarkable range of up to 30 km per charge, enough for extended adventures without constantly worrying about battery life. Actual range varies with the speed mode, terrain, rider weight and temperature, so treat the first few rides as calibration. Charge indoors at room temperature and unplug once the charge completes. A top-up before a short session works fine, since lithium packs take partial charges happily.
Why is the disc brake on the rear wheel?
The mechanical disc brake sits in the rear wheel, where braking stays stable and predictable for young riders. Rear braking avoids the front-wheel surprises beginners dread and delivers reliable stopping power exactly when needed. Test the lever before every ride and follow the manual for adjustment as the pads wear.
What does the suspension option mean?
The FXB02-16PLUS ships with a sturdy steel fork, and the design leaves the option to add suspension later. The rigid setup keeps maintenance low and the ride controlled for everyday use; when the rider starts chasing rougher terrain, the fork is ready to grow with them. The rigid setup is also the lighter one for small riders. Either way, comfort and control stay covered.
What assembly and upkeep are involved?
Setup covers the handlebar, seat height and a charge check with the supplied tools and manual. Beyond that: tire pressure weekly, a disc brake check before rides and a wipe-down after dusty ones. The brushless hub motor keeps the drivetrain simple, and the 3-in-1 design means one bike covering stages instead of a shelf of outgrown ones.
Quick Troubleshooting
When the HKM-2133587 needs attention, start here.
The bike will not power on
Confirm the battery has charge, then check the power button and indicator with the bike on flat ground. If the indicator stays dark, connect the charger for twenty minutes and retry, and inspect the mount contacts and connectors for grit or moisture. If everything looks clean and the bike stays dead, note what happened before the failure and contact support rather than forcing repeated restarts.
The range keeps shrinking
Compare riding style first, because the 30 km/h mode and hills use far more per minute than cruising at 15 km/h. Check tire pressure, since soft tires cost range twice. Cold weather trims every lithium pack. If nothing has changed, run one full uninterrupted charge and retest the same loop on the same mode, and log the loop you retest on before replacing anything.
The brake feels weak
Start with the lever and cable: check for stretch, grit at the lever pivot and full free travel, then follow the manual for adjustment. Retest on flat ground at low speed before returning to the higher mode. If the bite still feels weak with the cable set correctly, note when the feel changed and contact support, because stopping power is the one system never to ride on a maybe.
The charger light never turns green
Confirm the wall socket with another device, then reseat the charger plug at both the wall and the bike. Charge indoors at room temperature, because cold packs refuse a full cycle, and check the contacts for grit or bent pins. If the indicator still never completes, stop forcing cycles and contact support with a note of recent charging times. Do not leave a stalled charge unattended overnight.
The motor cut out mid-ride
A battery running low or hot will step back before it dies, so start with a full charge and a cool-down. Confirm the speed mode has not been nudged and the power connections are seated. If cutouts continue on flat ground in the low mode with a full, cool battery, note the mode in use and contact support. Climbs point to the pack; flat-ground cutouts point to the controller.
The bike will not reach 30 km/h
First confirm the speed mode is actually set to 30, because the most common cause is the bike still in the 15 km/h mode. Next check tire pressure, since soft tires cap real speed long before the motor does. A low battery also steps the pace back to protect itself. If the bike still tops out short in the high mode with fresh tires and a full charge, note the numbers and contact support.
Service & Policies
Coverage that rides every road 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-2133587.
The HKM-2133587 is a 16-inch-wheel balance bike with a 30 km/h high mode, so a certified helmet is mandatory before every ride, with closed shoes completing the kit. Start in the 15 km/h mode on flat, open ground until the rider has the rear disc brake and the throttle under smooth control, with an adult approving every change. Confirm the battery is fully latched before each ride, test the brake for the bite, and check the axle and stem hardware for torque. Keep fingers, laces and loose clothing clear of the rear wheel while powered, and let hot parts cool after sessions. Charge the battery indoors at room temperature on a hard surface, unplug once full, and never carry a passenger.
HKM-2133587 - FXB02-16PLUS 16-inch 3-in-1 electric balance bike for ages 5-8 with a 350W brushless hub motor, 15 and 30 km/h speed modes, up to 30 km of range per charge, a rear mechanical disc brake, a steel fork with optional suspension and a lightweight aluminium alloy frame. 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.
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Every part warranted for two full years.
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Contact Information
24/7 Phone
+1 (209) 280-3200
support@hekomart.com
Address
3401 Dale Rd, Modesto, CA 95356
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Available 24 hours a day, 7 days a week