Folding Bike, Fold Light 1 Second Aluminum

4.2

With its 16" wheels and its single-arm aluminum frame and fork, this bike is the most compact in our range. This makes it the perfect partner for tight spaces like trains, the subway, and elevators!

ID 8554730

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QUEBEC CONSUMERS ONLY: Decathlon Canada Inc. offers a wide selection of repair services, spare parts (in-store and online), and support information, but we do not guarantee their availability under the Consumer Protection Act. The only exceptions are the specific repair services listed below for purchases made on or after October 5, 2025
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Folding Bike, Fold Light 1 Second Aluminum 1/22

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Highlights

From folded to full mobility in an instant

Effortlessly fold it away for storage and open in one second with a single swift motion when you're ready to ride.
Compact travel companion

With 6-inch wheels and single-arm frame for effortless portability, take anywhere with ease.
Go further, faster

Whether you're tackling uphill terrain or cruising along flat roads, this bike has 9 gears to suit your journey.

From folded to full mobility in an instant

Effortlessly fold it away for storage and open in one second with a single swift motion when you're ready to ride.

Easy opening/closing
It's super easy to fold up. And it takes just 1 motion, and 1 second, to unfold!
Compact design
16'' wheels. Single-arm frame and fork. Take it anywhere!
Efficiency
Go further and faster with 9 gears. It adapts to suit your journeys.
Lightweight
Just 12 kg (26.5 lb). Well balanced for easy carrying. 0 worries with steps
Cycling comfort
Ergonomic grips. Comfortable, seamless foam saddle. 70° back position
Easy to move
Bike rolls along beautifully when folded up! Push & steer it with just 1 hand!
Ease of use
Designed to be comfortable to hold and steer. Automatically locking hinges.
Easy transport
The handle under the saddle makes it easy to carry.

Description

Design details

What makes us special
Our dream was to give you a superpower: the power to instantly transform your bike! After all, who hasn't ever wished they could switch from cyclist to pedestrian to passenger in just 1 second? It's now totally possible thanks to the patented automatic locking hinges developed by our design team in Lille, France. Your Fold Light 1 Second will adapt to your needs in an instant. So your transitions will become a real pleasure!
The story behind the design
To help them tackle this technical challenge, our design team turned to the experts at the Decathlon Sports Lab R&D centre in Lille, France. This network of ergonomists, human science engineers, and human body specialists helped us to find the best possible ergonomic set-up for: - carrying - steering - posture We carried out numerous tests (perception, use, fatigue) in the lab and in real-life conditions.
Incredible: unfolds in just 1 motion and 1 second! And easy to fold too!
We want to make your transitions quick, smooth, and easy with a simple folding and unfolding system. Unfolding: Incredible, in just 1 motion and 1 second! There's no need to touch the hinges at this stage thanks to the patented automatic locking system that's exclusive to Decathlon. Folding: The easy-to-locate levers make the hinges simple to operate. The chunky levers have rounded edges so that they're comfortable to grasp.
Frame
6061 T6 aluminum frame that's lightweight, dynamic, and sturdy. The single-arm frame design at the back makes the bike much narrower when folded. It's only 35 cm wide. That's 20% more compact than the 50 cm (20") folding bikes in our range.
Fork
Single-arm, 6061-T6 aluminum frame for less weight and more strength. The single-arm fork design makes the bike incredibly narrow when folded. In fact, it's only 35 cm wide. That's 20% more compact than our 50 cm folding bikes. We've also used topology optimization to develop a more "open" frame. This technology ensures that we use just the right amount of material while retaining the necessary rigidity.
Fastening system
A brand-new system holds the Fold Light 1 Second in its folded position. Magnets located on the front and rear hubs keep the bike's wheels parallel. Once folded, a clip system holds the stem against the frame. This clever system allows you to push your bike when it's folded, and to carry it without a second thought.
The bike rolls when folded
Yes, the Fold Light 1 Second rolls along nicely when folded! You only need to carry it when absolutely necessary. In other words, when you come up to a staircase or need to put it in a train luggage rack or car trunk. The rest of the time, you can easily move it by simply pushing it along, even when folded. Leave the seatpost in its raised position and use one hand to steer it anywhere, even in busy pedestrian zones (e.g. stations and stores).
Brakes
This bike has V-brakes with aluminum levers and calipers for powerful, progressive braking. Recommendation:your brakes will gradually wear out over time. How quickly they wear out will depend on how much you ride and how you ride. If your brakes become too soft, and your levers end up touching the grips when you squeeze them, we recommend adjusting your brakes yourself or getting a workshop to do this for you.
Wheels
16". Single-walled, machined rims. Reinforced single-sided hubs with sealed ball bearings (the same technology that we use on our road bikes).
Tires and inner tubes
Tires- Schwalbe Marathon Racer. Size 16" x 1.50". - Light and precise, with good puncture protection to suit intensive users. - Reflective bands on the sidewalls to make you more visible from the sides at night. Inner tube: - Schwalbe for excellent durability. - Large Schrader valve. Tips We recommend inflating your tires to 6 bar to reduce the risk of punctures and to make your pedaling more efficient.
Drivetrain
You'll be amazed by the Fold Light 1 Second! Its Shimano Sora 9-speed drive train (the same one we use on road bikes) makes it incredibly efficient, especially for an ultra-compact bike. The trigger system makes gear changes precise and reliable. This bike is great on both flats and downhills. It adapts to whatever happens on your ride and helps you manage your effort.
Cassette
9 speeds Gearing: 11 / 28 teeth - 11 teeth on the smallest cog. For riding faster. - 28 teeth: on the biggest cog. You won't have to push the pedals too hard.
Crankset / pedals
52t aluminum chainring with 170 mm cranks. Folding pedals so that the bike is even more compact when folded.
Saddle:
When you're cycling: The seamless foam saddle keeps you comfortable. When you're walking / on public transport: The ergonomic saddle under the saddle has two functions. - It makes the bike easier to carry when fully folded. The saddle swivels to face backwards to keep the bike evenly balanced when you're carrying it. - You can use the handle to hold the bike and push it along when folded. Simply leave the seat post raised.
Carbon Seat Post
- Made from aluminum, with a diameter of 34.9 mm (1 1/3"). - Marked so that you instantly know exactly where to set it to each time for the most efficient ride. - Automatically rotates as you lower it. It's guided by 1 brass screw and 1 groove. The saddle swivels to face backwards to keep the bike evenly balanced when you're carrying it. - Turns into a stand when you lower it fully so that the bike remains stable once folded.
Bike stability: 3 stands
- Adjustable stand with a button to adjust the length. The stand keeps the bike stable when it's unfolded (whether or not you have bags on it). - Frame support stand that the bike rests on as you fold it and that protects the chainset. - The bottom of the seat post turns into a stand if you lower it all the way when folding the bike. This keeps the bike incredibly stable when it's folded so that you can put it away or take it on public transport.
Bike weight
The Fold Light 1 Second weighs in at just 12 kg (26 lbs)! It's very light and incredibly easy to transport thanks to: - its 6061 T6 aluminum frame and fork. - its single-arm frame and fork design, which makes it very narrow. - its good balance when folded. Simply hold your bike by the handle under the saddle. Climbing up stairs or onto the train will be an absolute breeze.
User height and maximum load
One frame size only. This bike's geometry is comfortable for cyclists between 1.45 and 1.95 m (4'9" and 6'4") tall. This bike complies with the requirements of standard ISO 4210. The maximum load it can take is 100 kg [220 lbs] (bike + user + luggage). Above this weight, the warranty no longer applies.
Special accessories that are compatible with the Fold Light 1 Second
- The 16" (40 cm) protective cover (ref: 8610451): can be used to cover your bike when transporting it (commuter train, car, cross-country train, etc.). The cover comes in a zip-up pouch that you can attach to the underside of your bike's frame. - 25 L (22 qt.) front bag for folding bikes (ref: 8735484) : for carrying all of your belongings. Clips onto the front of the bike's frame in 1 second. - smartphone holder (ref: 8595221) : clips onto the bracket on the handlebar.
How can you carry your bags?
The bike comes with mounting points on the frame (above the front wheel). These mounting points can be used for an exclusive bag designed by the B'Twin teams: our 25 L front bag (ref: 8735484). It can be clipped on and taken off with 1 hand in 1 second. As it sits on the frame, you won't notice its weight and the bike will remain stable. You'll be able to control your bike as normal. /!\ When your bag is full, you won't be able to lift up the front wheel to mount sidewalks and curbs.
Accessories that are not compatible
- This bike is not compatible with a rear pannier rack. This is because it only has a single chainstay at the back. - Pannier racks that attach to the seat post are not compatible either. - Child seats are not compatible - Child trailers are not compatible
Stem / Handlebar
Stem: - aluminum - folding thanks to a patented system of hinges that automatically lock in 1 second - height can't be adjusted Handlebar: - aluminum - 22.2 mm (9/10") diameter - 560 mm (22") wide
USB rechargeable front and rear lights
USB front light: - 5-hour battery life. - 10 lux for seeing and being seen. - Clips onto a special bracket in the centre of the handlebar. USB rear light: - 6-hour battery life. - 5.4 lumens. - Clips onto the seat clamp. It's positioned nice and high so that you're really visible. These lights comply with the French highway code and with German standards. The dual port micro USB cable is supplied with the bike
Bike dimensions
Folded (L/H/W): 71 x 69.5 x 35 cm [28 x 27 x 14"] Perfect for switching between transport modes! You can take it absolutely anywhere, including in the tightest of spaces, such as trains, the subway system, elevators, turnstiles, security gates, and car trunks. Unfolded (L/H/W): 129 x 107 x 57 cm (51 x 42 x 22 1/2").
Frame colour
You might notice "imperfections" in the colour of the green frame. This is not a quality defect, but rather the result of our design choice to use brushed aluminum and a smoky varnish. Your bike will therefore look like no other!
Maintenance / repair advice
Scan the QR code on your bike's frame to find all our tips and tutorials on looking after and repairing your bike.
What is the QR code on the bike's frame for?
The QR code opens the door to a comprehensive user experience. Scan it to access all of the information you could possibly need about your bike and how to use it. - 1 video tutorial on folding/unfolding the bike. - the support website with maintenance and repair advice. - the spare parts website. - the shop selling compatible accessories. - the link to our services and insurance offering. - latest news and design stories
Restrictions
/!\ It's important to always look to make sure the hinges on your frame and stem are locked in place before you ride. This bike should not be used for stunts, mountain biking, or BMXing.

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Folding Bike, Fold Light 1 Second Aluminum

How to get it

Highlights

Features

Description

Design details

Specifications

Details

Composition

Legal notice

EU product safety contact

Usage & care

Description

Design details

Specifications

Details

Composition

Legal notice

EU product safety contact

Specifications

Details

Composition

Legal notice

EU product safety contact

Usage & care

How to use

Everything you need to know

How to repair or replace

Lifetime warranty on the frame and stem (excl. hinge), rigid fork, and handlebar.

Care instructions

Usage precautions

Specifications

Details

Composition

Legal notice

EU product safety contact

How to use

Everything you need to know

How to repair or replace

Lifetime warranty on the frame and stem (excl. hinge), rigid fork, and handlebar.

Care instructions

Usage precautions

Highlights

Subscribe to our wonderful newsletter