Carbon fiber folding bike 20 inch with 9 speed for sale | EWIG

Short Description:

1. Carbon fiber folding bike:20 inch folding bike frame and fork is making using the Japan Toray T700 carbon fiber, as it is uniquely strong , light, and had a better corrosion resistance. After folding , it is 80*64*40cm , making it convenient to store without occupying more space, chinese folding bike is easy to carry on trains and buses.

2. Our china foldable bike is 1*9 speed with 20 inch tires. Shimano M2000 shifter level and derailleur system, it is TEKTRO HD-M290 hydraulic dis-brake. Adjustable seat post and stem. It is definitely the best choice for  your daily commute.

3. Our foldby one 9s is our best lightweight folding bike for sale. We are professional folding bike manufacture in China and this carbon foldable bike is equipped with a professional transmission and brake system, ergonomic and aerodynamic design. The portable carbon fiber folding bike is completely assembled before packing and shipping . The brake are dialed in and the derailleurs are adjusted : just pump up the tires and get out to ride.

Product Detail



carbon folding bike EWIG

1. This China 9 speed lightweight folding bike is easy to assemble and set up, and very comfortable to ride, the perfect companion for city and work or holiday and camping, it can be folded even at peak times in bus and train. With full equipment, this carbon folding bike is great for the highest mobility demands of the whole family(This bike is 95% assembled and 5% unassembled, you need to install the left of 5% by yourself.)

2. Carbon bike frame, forks are lightweight and stiff carbon folding bikes at 8.1kg(not including the weight of two pedals). Fixed gear single speed fixie bicycle with easily removable front / rear brakes. The double-disc brake device is more sensitive, and the front and rear wheels are all equipped with double-disc brake devices, which makes the braking more timely and safer.

3. Adjustable handlebar/saddle, saddle/handlebar height can be adjusted freely, suitable for different heights for longer use.

Full Carbon Folding Bike

Foldby one 9s
Model EWIG 
Size 20 Inc
Color Black Yellow
Weight 8.1KG
Height Range 150MM-190MM
Frame & body carrying system
Frame Carbon fiber T700
Fork Carbon fiber T700*100
Stem No
Handlebar Aluminum black
Grip VELO Rubber
Hub Aluminum 4 bearing 3/8" 100*100*10G*36H
Saddle Full black road bike saddle
Seat Post Aluminum black
Derailleur / brake system
Shift lever SHIMANO M2000
Front derailleur No
Rear Derailleur SHIMANO M370
Brakes TEK TRO HD-M290 Hy draulic
Transmission system
Cassette sprackets: PNK,AR18
Crankset: Jiankun MPF-FK
Chain KMC X9 1/2*11/128
Pedals Aluminum foldable F178
Wheelset system
Rim Alumimum 
Tires CTS 23.5

Folding effect

best carbon folding bike EWIG
best carbon folding bike chinese
best carbon folding bike china

Foldby one 9S with uniquely designed to make commuting easy and hassle- free, it comes with a simple 3-step folding process, making it easy to fold and unfold.This foldable design make it more convenient and easy to carry on to trains and buses.

The highlights of this component set

T700*100 carbon fiber fork and frame, 1x9 shifting from SHIMANO M2000, 20 inch wheel ,large and stable, and comfortable seat post, can be adjusted.

carbon fiber seatpost

Seat Post:31.6mm dropper post

Water drop seat post , unique design, can be adjusted seat post up and down, it ensures that anyone can ride it regardless of the height of the rider. 

Suitable for height 4'8-5'6 (140cm -170cm)

carbon fiber cycling wheels


The tires are made of wear-resistant rubber and have extra thickness, making riding safer. The wheel frame is made of sturdy alloy material to increase the robustness of the tire. Very suitable for commuting, riding in the park, outdoor riding.

carbon fiber bike parts

Rear Derailleur:SHIMANO M370

SHIMANO M2000,RD-SHIMANO M370 ,9-SPEED itself apart with fast and precise shifting across all 9 gears of the cassette. 9- speed adjustment SHIMANO M2000 shifter lever and the derailleur syetem.And the TEKTRO HD-M290 Hydraulic. It is stable speed and more effort-saving driving.

carbon fiber bicycle parts

Fork:Carbon Fiber fork and Dis-brakes

Carbon fiber fork , it is strong and light, and has better corrosion resistance. it is easier to lift and carry with greater comfort. Double front and rear brakes, strong breaking force, improve the safety when driving

carbon fibre bike construction
carbon fat bike frameset
carbon bike frames

Sizing & fit

Understanding your bike's geometry is the key to a great fit and comfortable ride.

The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit.

Sizing & fit
15.5" 100 565 394 445 73" 71" 46 55 34.9 1064 626
17" 110 575 432 445 73" 71" 46 55 34.9 1074 636
19" 115 585 483 445 73" 71" 46 55 34.9 1084 646

Ewig carbon fiber bicycle are hand-built and shipped straight to you. All you need to do is put on the front wheel, seat, and pedals. Yes, the brakes are dialed in and the derailleurs are adjusted: just pump up the tires and get out to ride.

We make carbon bikes that are suitable for everyday riders all the way to the sport's very best athletes.Our program allows you to spend less time assembling your new carbon fiber bike.

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  • Do carbon bikes break easily?

    Carbon fiber is strong, but not durable, so if you’re riding on a “crappy” road then you don’t have to worry about it breaking, but you might damage it if you hit a rock or something.

    The reason for this is that carbon fiber is a “composite material” – it’s made out of long “fibers” of pure carbon that are suspended in a “matrix” material, usually some sort of epoxy resin. The fibers have a layered structure to them that makes them much stronger along their length.

    So although carbon fiber is designed to be strong if you use it as intended, if you somehow hit it perpendicular to the fibers then it’s actually pretty weak.And since it’s embedded in plastic, the material isn’t very tough, and can get scratched really easily.For a direct comparison, reinforced concrete can often be “as strong as steel” but if you hit it with a hammer it will definitely chip a lot easier than steel.

    Now, carbon fiber is so incredibly strong that you can make it resistant to damage by just overbuilding it, and you’ll still wind up with a lighter-weight bike than if you made it out of metal.

    But unless you’ve gotten a carbon bike that’s specifically designed to be durable, they’re a lot more fragile than usual. They’re actually less likely to break on you than a metal bike is, but you have to be way more careful not to damage them.

    What is the best folding bike brand?

    A few years ago, folding bikes were so unpopular and consumers have just a limited number of choices. At the moment, we can see them everywhere in the United States, from online retailers like Amazon to brick-and-mortar stores like Target, Walmart or Sports Authority.

    While this is good news for us, it also means you might have to spend a lot of time researching and deciding which is the best folding bicycle for your needs. We love folding bicycles and it is better test them so we know this is not an easy decision, especially for inexperienced shoppers.

    Many people have the prejudice against this type of bicycle because they think it is more expensive, bulkier and can’t compete with regular full-sized bikes. The viewpoint is no longer valid as there’ve been a lot of improvements in design and materials of folding bikes in the last decade. The disadvantage of being unwieldy is solved as folding bikes are so compact and lightweight that you can put two of them in your car trunk. The weight of most recent folders is made lower than 30 lbs and we even see some lighter than 20 lbs.

    Folding bicycles are suitable for anyone who wants to use a bicycle at more places, for people who are aware of their health and looking for the most healthy and environmentally-friendly way to get around. Urban commuters would benefit the most from folding bikes because they don’t have enough space to store a conventional bike and need to solve the last-mile problem.

    There is no the best folding bike, but it is important to find the one that suits you.

    carbon fiber bike frame lifespan

    Carbon fiber bike frame doesn’t fatigue like aluminum, however uncoated carbon fibre and the impregnated resin can be weakened / damaged over time by exposure to Ultraviolet light (UV). For this reason many carbon fibre frames are painted with either an opaque paint or something with UV protection (inhibitors or absorbers). Provided you don’t subject the bike to fire, chemical attack or a hit big enough to break it, or put a notch in the frame or fork, thereby causing a stress concentrator, it should last a very long time. With proper care it may outlast the rider.

    If you look after the bike, keep it out of the sun when you’re not riding it and don’t subject it to big hits, like crashing, thus staying under the failure limit of the material, it should last a very long time.

    Unless they are damaged or poorly built, carbon bike frames can last indefinitely. Most manufacturers still recommend that you replace the frame after 6-7 years, however, carbon frames are so strong that they often outlast their riders.

    carbon fiber bike frame weight

    The average carbon folding bike weighs approximately 8.2kg (18 pounds). Like every other bike category, the frame size, frame material, wheels, gears, and tire size can change the overall weight. Carbon fiber bike frames are strong, reasonably stiff and in fact, the lightest.Usually the weight of carbon frame is around 800g.

    Heavier cyclists should be mindful of weight limits for security reasons and to ensure the durability and functionality of the products they buy. Frame and wheelset manufacturers establish weight limits based on performance metrics for rider safety, to protect themselves legally, and to have a solid guarantee behind their products.

    For many riders, the weight of the bike is the primary concern. Having a lightweight bike makes climbing easier and can make the bike easier to manoeuvre. Whilst it’s possible to make a light bike out of either material, when it comes to weight, carbon definitely has the advantage. A carbon fibre frame will almost always be lighter than an aluminium equivalent and you’ll only find carbon fibre bikes in the pro peloton,in part because of the weight benefits.

    what should with my.cracked carbon bike frame?

    A professional mechanic should always inspect your bike in the event of a crash or carbon damage.. It’s a scenario where your bike falls over, or you have a crash on your mountain bike. Hopefully, the weight behind the impact came mostly from the bike itself, or a bit of your body, but not much else. Start with a visual inspection. Wash the bike. Hopefully, you take care of your bike pretty well and you keep an eye on things so you know every scratch you’ve put into it. But clean it completely so you get a good view of the whole bike. That’s really the best place to start. You’re looking for any kind of cracks or damage. If you find something, you can run a rag over the damaged spot and if the rag snags on the carbon tube that’s a sign that there’s something wrong.

    how to install a talgate light in a carbon bike?

    Using front and rear Daytime Running Lights on every ride is a proven way to boost your visibility. But it’s important to mount them properly in order to get the most benefit. Learn how to install them correctly by following along with our step-by-step video and the instructions below.

    1.Check to make sure you are using the quick connect bracket designed for the rear light—it’s wedge-shaped and it will have a saddle icon on it, right next to the strap’s hook.

    Note: the wedge shape counteracts the angle of the seatpost so that the rear light is always parallel to the ground. This way the light is thrown directly behind you, giving you the greatest visible range and ensuring that drivers can see you.

    2. Hold the bracket so that the widest part of the wedge faces the ground and the saddle icon is upright.

    3. Place the light near the top of the seatpost, but low enough that the light will not be blocked by a bag or seatpack.

    4.Attach the quick connect bracket to your seatpost by stretching the rubber straps around your seatpost.

    5. Then, catch the hook securely through a notch on the strap. The tab on the hook will hold any excess strap in place.

    how to stop squeaky bike brakes on carbon rims?

    “Cleaning your rotors or wheel rims regularly with a specific (oil-free) disc brake degreaser is a good way to avoid squealing brakes. Cleaning your pads too can help quieten things down – you can try some sandpaper or grinding the pads – but if the grease has soaked through the pad, you might need to replace them.

    The first thing you want to do with rim brakes is to ensure the brake calipers and the braking surfaces of the rim and the brake blocks are thoroughly cleaned and in good working condition. Also, check that all bolts securing the caliper to the frame and the brake blocks to the calipers are securely tightened. Any loose parts can cause unwanted brake noise.

    Often the cause of brake squeal is contamination, caused by enthusiastic chain lubing or oil picked up riding on the road in wet conditions with lots of puddles. So make sure the rims are cleaned thoroughly with a degreaser to remove any residue oil. There are many brake cleaners on the market that can help to ensure the braking surfaces are in tip top condition.

    If a good clean doesn’t solve the noise, the other likely cause is vibration caused by a poorly set up brake.

    How much does a carbon fiber bicycle cost?

    Is carbon fiber good for bikes?

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