Koolux KL6S - 500W - Folding Electric Bike

🚴‍♂️ The Koolux KL6S city e-bike has arrived in Kruunuvuorenranta – When a bike is more than just a bike

It was a quiet morning, the sea was foggy, and the air was filled with anticipation as the newcomer was unloaded from a heavy pallet and taken straight to the shared test ride station for electric bikes in Kruunuvuorenranta. This wasn’t just any bike—it was the Koolux KL6S city e-bike.

The test team looked at the bike the way experienced mechanics might look at a work of art. The bike was still folded up, but somehow… complete. It had that certain something. A hint of sturdiness. A touch of electric defiance. The first test rider climbed onto the saddle, flipped the switch—and the world fell silent.

That "This is what I want " feeling set in even before the first kilometer.

🏙️ Kruunuvuori’s rocks, parks, and hills – KL6S won’t back down

During city riding, the Koolux KL6S electric city bike handled as if the street were its natural element. The fat tires rolled smoothly over the cobblestones, and the suspension absorbed the vibrations like cotton candy.
On the uphill stretch, the old gravel road leading to Kruunuvuorenranta posed no problem at all. The 250-watt motor and 48-volt battery propelled the whole thing uphill as if gravity didn't exist.
Off-road —yes, we tried that, too—the bike remained stable and smooth even on narrow forest trails. We handled tree roots, sandy paths, and curves with ease.
On a long ride, the PAS assistance on the Koolux KL6S city e-bike lasted for up to 120 kilometers. It didn't just hold up—it excelled.

🔧 Koolux KL6S City E-Bike Specifications

• Motor: 250 W brushless rear motor, torque approx. 32 Nm
• Battery: Removable 48 V 15.6 Ah lithium battery
• Tires: 20″ x 4.0″ Kenda fat tires
• Gear system: Shimano 7-speed
• Brakes: Hydraulic disc brakes front and rear
• Suspension: Full suspension—both front and rear
• Display: LCD display for ride data
• Lights: LED headlight and taillight
• Frame: Foldable aluminum frame
• Weight: approx. 30.5 kg
• Load capacity: up to 120 kg
• Dimensions when unfolded: 178 x 79 x 111 cm
• Dimensions when folded: 96 x 47 x 89 cm
• Range: approximately 70 km on electric power, up to 120 km in PAS mode
• Protection rating: IP54 – water and dust resistant
• Maximum climbing angle: approximately 25 degrees – tested on the slopes of Kruunuvuori

💥 Why choose the Koolux KL6S city e-bike?

The Koolux KL6S city e-bike is the perfect combination of power and intelligence—it doesn't look brutal, but it performs like one when the situation calls for it.
Fat tires and full suspension make driving a pleasure—whether in the city or on a dirt road.
The foldable frame allows for storage in a small space and makes it easy to transport, even in an elevator.
Its long range and hydraulic brakes ensure that this electric bike is no one-trick pony.
Tested at an official joint electric bike test site— the Koolux KL6S city e-bike isn't just a rumor; it's a proven machine.

We also want to share useful information about the world of e-bikes. If you’d like to learn more about e-bikes, their benefits, and how they can be used, I recommend checking out the following resources:

Network of Cycling Communities– Up-to-date information on cycling in Finland.
Traffic Safety– Tips for Safe Electric Biking.
Fillari Magazine– Articles and reviews on cycling and e-bikes.
Motiva– Information on sustainable transportation solutions.

I hope you find some useful information in these links!

Best regards,
The SähköpyöräTehdas Team

Motor: 250 W brushless rear motor, torque approx. 32 Nm
• Battery: Removable 48 V 15.6 Ah lithium battery
• Tires: 20" x 4.0" Kenda fat tires
• Transmission: Shimano 7-speed
• Brakes: Hydraulic disc brakes front and rear
• Suspension: Full suspension—both front and rear
• Display: LCD display for ride data
• Lights: LED headlight and taillight
• Frame: Folding aluminum frame
• Weight: approximately 30.5 kg
• Load capacity: up to 120 kg
• Dimensions when unfolded: 178 x 79 x 111 cm
• Dimensions when folded: 96 x 47 x 89 cm
• Range: approximately 70 km on electric power, up to 120 km in PAS mode
• Protection rating: IP54 – water and dust resistant
• Maximum climbing angle: approximately 25 degrees – tested on the slopes of Kruunuvuori

First, select a color: Black

Electric Bike Factory Warranty – We're Here to Support You

All electric bicycles come with a manufacturer's warranty that covers the most important parts as follows:

Frame: 10-year warranty against manufacturing defects.
Electric motor and its components: 2 years.
Battery: 2 years.
Other electrical components: 2 years.

The expert staff at Sähköpyörätehdas will support you throughout the entire warranty process, so you
don't have to worry. We'll handle everything for you directly with the manufacturer.

How we handle warranty issues on your behalf:

1. If a problem arises – Contact us at
If your electric bike develops a fault, contact Sähköpyörätehdas customer service immediately. You can
contact us by email, phone, or by filling out the warranty form on our website.
We ask that you describe the problem in detail and send any photos or
videos of the issue, along with your purchase information. This will allow us to assess the problem as quickly as possible.

2. Problem Assessment and Inspection
When you contact us, our expert will assess the situation and determine whether the problem is covered by the warranty
. If necessary, we’ll direct you to the nearest service center or arrange for your bike to be picked up
for a more detailed assessment. We’ll take care of everything for you—all you need to do is report
the problem and send your bike in for inspection.

3. Warranty Processing – We’ll handle communication with the manufacturer
Once we’ve confirmed that the defect is covered by the warranty, the Sähköpyörätehdas staff will handle
all communication with the manufacturer on your behalf. This includes submitting the necessary documents and information
as well as ordering any replacement parts. A warranty repair may involve replacing a part,
repairing the bike, or even delivering a new bike if the defect cannot be repaired.

4. Fast and Efficient Service
We ensure that the problem is fixed as quickly and professionally as possible. We’ll handle
all service-related arrangements for you, so you don’t have to worry about the details.
We’ll keep you updated throughout the process and notify you as soon as the service or repair is complete.

5. After a warranty repair – We’ll arrange for the return at
Once the problem has been fixed or the defective part has been replaced, we’ll notify you and arrange for the return or pickup of your bike at
We’ll make sure everything is in order before we return the bike to you at
.

6. Costs Covered by the Warranty
If the defect is covered by the warranty, repairs, part replacements, and return shipping are completely free of charge for you.
If the defect is not covered by the warranty, we will offer you a paid repair service and provide
a cost estimate before starting the work.

Sähköpyörätehdas Supporting You Every Step of the Way

We are committed to ensuring that your electric bike works flawlessly throughout the warranty period.

We'll handle all warranty matters with the manufacturer on your behalf, so you can focus on carefree
driving.

Sähköpyörätehdas's customer service is always ready to help you—just contact us at
and we'll take care of everything for you.

Maintenance and Assembly of Electric Bikes at the Electric Bike Factory

You can have your electric bike serviced either at our store in Helsinki or at service centers located elsewhere in Finland. You can easily find your nearest service location [here].

Assembling an Electric Bike

When you buy an e-bike from us, you can rest assured that we’ve made everything as easy as possible for you. Our e-bikes come 90% pre-assembled, which means you don’t have to worry about complicated assembly steps. For the final assembly, you’ll receive all the necessary tools and clear, step-by-step instructions to ensure your e-bike is ready to ride in just about 30 minutes.

However, if you need help at any stage, we’re here to assist you. You can contact us at any time, and we offer free video guidance via WhatsApp to ensure the assembly goes smoothly. If you’d still rather not assemble the e-bike yourself, you can also bring it to our store, and we’ll assemble it for you—this service is also designed to keep the process easy and hassle-free.

First Aid

The first service should be performed after about one month of riding or when the e-bike has been ridden 100–300 kilometers. This initial service includes a thorough wash of the e-bike, a comprehensive inspection of the electrical components, adjustments to the brakes and gears, tightening of the spokes, lubrication of the chains, and a general condition check. This service ensures that your e-bike is in top condition and ready for safe riding.

Annual Maintenance

Annual maintenance includes even more comprehensive procedures: battery testing, drivetrain cleaning, tire inflation and replacement, chain lubrication, and inspections and updates of all electrical systems. We recommend annual maintenance regardless of how often you use your e-bike, to ensure it remains in top technical condition and safe to ride all year round.

Prices for Maintenance and Repair Services

We keep our maintenance costs competitive. The price for an initial service starts at 90 EUR, and a comprehensive annual service costs 149 EUR (including 25.5% VAT).

If you'd like us to assemble your electric bike for you, you can bring it to our store; the assembly service costs 69 EUR.

Service and Assembly Appointment

You can schedule a service appointment or a pickup by calling our store directly or visiting our website.

If you can't make it to our store in Helsinki, you can take advantage of our service network, which covers all of Finland. [Click here] to see all of our service locations and their contact information.