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Btwin Original 100, Hybrid Bike, 20", Kids 3'11" to 4'5"

Sale price: $249.00 Regular price:

A kids' sturdy, single-speed, 20" white bike that's easy to ride. Equipped with a bell, it can be ridden around town as well as on trails.

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Sale price: $249.00 Regular price:

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San Francisco, 735 Market St. Options

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About this item:

  • Easy to Learn: Simple & efficient single-speed.
  • Brakes: Ultra-reliable v-brake system.
  • Lifetime Warranty: Frame, stem, handlebars, and rigid fork guaranteed for life.
Model: 8629892

Product Features

A photo of the Btwin Original 100, Hybrid Bike, 20", Kids 3'11" to 4'5" in use

Btwin Original 100, Hybrid Bike, 20", Kids 3'11" to 4'5" | Designed for kids aged 6 to 8 years (3'11" to 4'5") who want to learn how to ride a hybrid bike.

A kids' sturdy, single-speed, 20" white bike that's easy to ride. Equipped with a bell, it can be ridden around town as well as on trails.

Easy to use

Single-speed, simple, and efficient bike.

Bike safety

V-Brakes provide powerful and easy braking.

Lifetime warranty

B’Twin offers a lifetime warranty on the frame, stem, handlebar, and rigid fork.

Product Lifestyle Image Gallery

Image Gallery

Btwin Original 100, Hybrid Bike, 20 

Btwin Original 100, Hybrid Bike, 20 

Btwin Original 100, Hybrid Bike, 20

Product Customer Reviews

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Btwin Original 100, Hybrid Bike, 20
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Kid love the new bike

The bike came fully assembled and is easy to ride

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Fab bike

Excellent bike. My 8 year daughter loves it. Feels very solid and well made. Brakes are excellent and should last until the 5 year daughter is big enough to use it!

Easy to ride bike

My 6-year old girl, never been on a bike before, learnt to ride this bike in only 4 days and without stabilizers. She is thoroughly enjoying it now, riding it all by herself.

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Very good value children's bike

A good looking bike, easily set up. Had a slight problem with the front brake, which came on when my granddaughter turned right. A slight adjustment rectified this. Very good value for money and my granddaughter loves it.

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Btwin Original 100 kids' bike

Delivery wasn't great. Delivery day changed late in the day disrupting arrangements made to receive. Bike arrived 2 hours outside the predicted time in a very large generic box, not, as I would have expected, in a Decathlon or Btwin box, which created a bad impression. The bike was in good condition but arrived without the promised instructions or tools so I was left to work it out. Unusually, the pedals were not marked "L" or "R" or colour coded, as is usual. The right hand pedal went in by hand ok but the left was very stiff and needed the correct spanner, which I presume should have been supplied, which I don't have, so I have been unable to complete the assembly so far. Similarly, the front forks which - it appears - need an allen key (not supplied). I'm afraid that my opinion of the service I received is very negative. This is very disappointing, especially as the bike was bought as a Christmas present for my grandson. I have always admired the brand as producing good quality and good value bikes, but this experience has made me think again.

Great bike

I bought for my tall almost 5 year old child,very happy with this bike, my daughter loves it, feels very comfortable on it.

Perfect for learning to ride

We brought this for our 6 year old, she loves it. It is light yet strong and perfect for first time without stablisers.

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Good service

Good bicycle my daughter she love it

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Very good

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Hybrid Bike 6-8 years

I read good reviews about this bike online, but only in just one outing with this cycle rear tyre got puncture. I am not sure how to get that puncture repair, I visually inspected it but cant see any problem at tyre surface. Is there anyway Decathlon can assist us , we are not using this cycle , it is just standing in Garage.

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Thank you for your question regarding your puncture. We suggest you contact your local Decathlon store workshop who will gladly assist with your query.
Peter, Cycling Manager, DECATHLON
Good bike, poor service

The bike is great, lightweight so ideal for my tall but slight built 7 year old. The customer service wasn't great. I ordered online with an expected delivery date of the Thursday. Never arrived Thursday or Friday so I contacted decathalon. Received an email from the courier about an hour later saying delivery would be the following Wednesday, which was too late for their birthday. I had to email back and forward several times. I had to check the bikes were still in stock in-store, re-order obviously paying for the bikes again, then cancel the online order and wait for a refund! 6 days later than an expected delivery date is not acceptable!

Супер е

Само където няма степенка да седи право

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Dětské kolo

Dcera je spokojená. Rychlý servis. Doporučuji.

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Je kvalitnější

Deti má velku radost, je prakticky a rychlý :)

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Kolo pěkný jen mě zamrzlo že to špatně brzdí i když to servisák šteloval,jinak spokojen

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Size Guide

Size Guide Visual

Additional Product Information


Bike frame

  • 100% Steel


Steel frame designed by B'TWIN. The lowered frame geometry makes it easier to get on and off the bike.



Handlebars / stem / steering

Mid-rise stem and handlebar. Quick-release saddle. Reinforced comfort saddle for a comfortable sitting position. Fast, tool-free saddle adjustment. B'Twin selected this reinforced saddle for its tried-and-tested durability (should the bike fall over, for instance).


Very reliable V-Brakes. B'Twin chose to equip this bike with a V-Brake system for its ease of use, easy maintenance, and greater braking power.

Chain guard

Anti-derailment and chainwheel guard. The chainwheel guard offers added safety by reducing the risk of injury on the chainwheel. The chainring is covered with a 2nd inner chainguard to prevent any chance of derailing.

Accessories / equipment

Bike is fully equipped for riding on public roads (bell, reflectors).


23.8 lbs

Compatible accessories

KIDS BIKE STAND 100 (Model Code 2694189) 20" & 24" KIDS BIKE STABILIZERS (Model Code 8550741)

Warranty information

"Lifetime warranty on manufacturing defects for all metal frames, rigid forks, stems, and handlebars 5 years warranty on all carbon frames and forks 2 years warranty on all other parts Excludes damages arising from normal wear and tear, misuse, negligence, and unauthorized modifications"



Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual