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Btwin Rockrider ST100 Mountain Bike 20" Kids 3'11" to 4'5"
A sturdy, single-speed, 20" white bike that's simple to ride. Equipped with front and rear lights and a bell, it can be ridden around town as well as on trails.
Free shipping over $49
Final Sale: No returns or exchanges
Free returns
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Features
Easy to learn
Single-speed, simple and efficient bike. Bike weight 24.3 lbs.
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.
Questions & Answers
Look for product information, frequently asked questions, opinions...
Question:
Is the rear hub freewheeling or coaster brake?
Answer:
This bike uses a freewheel on the rear hub only
Don't see the answer you're looking for?
Product Customer Reviews
I liked the color I practice it the attention they installed everything I bought they covered it super well I was happy I would return
Worth
Excellent client service
Santa brought my son this bike for Christmas. My son was not an experienced rider, but this bike has brought out his confidence and love for biking. Now looking at adult versions for my wife and I. I highly recommend this product and I plan on this being the first place I look for bikes in the future.
I ordered two of these bikes for my grandsons for Christmas. They are beautiful (the bikes and the grandsons). However, one of the bike's inner tubes will not air up and the front breaks on that same bike will not adjust properly. The other bike is in perfect working order. I really wish they were both in that condition so both of my grandsons were happy.
Good
I bought this bike for my grandson. Bike came by mail 90% assembled. My grandson liked it very much. The rear tire keep losing air. We are keeping an eye on that. It looks like some kind of leak.
Satisfied with this product.
Quite a comfy bike for kid
The Chain Will Come Out Many Times A Day, Very Frustrated
my 7 year old son's first bike. he likes it.
Wanted our son to learn how to ride a bike without training wheels and the height was perfect for him. I removed the pedals easily so he can learn how to balance and coast, and within an hour he was successful!
My daughter enjoys cycling on this bike so far
my son loves it
Rockrider ST100 bike is sturdy with easy adjustable seat that's comfortable and suitable for my kids (ages 9-11) who just started to learn cycling without the supporting wheels. They pickup cycling less than 15minutes :)
Additional Product Information
Composition
Bike frame : 100.0% Steel
Frame
The chainwheel anti-derailment device and low step-through frame make it easy to get on and off.
Accessories / equipment
Fully equipped for use on public roads (bell, reflectors).The rear derailleur guard protects the derailleur from damage in the event of an impact.
Origin
Imported
Law label information
Btwin Rockrider ST100 Mountain Bike 20" Kids 3'11" to 4'5"
Your location: City, ST
Please enter a valid city with state or zipcode. Example: San Francisco, CA or 94101
Order online for
Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
| Weight Thresholds | Shipping within California | Shipping outside of California |
|---|---|---|
| > 9 lbs | $20.00 | $25.00 |
| > 30 lbs | $50.00 | $65.00 |
| > 100 lbs | $100.00 | $125.00 |
| > 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
