Product Colors and Sizes
- Black Friday product
- New Deal product
- Cyber Monday product
- Clearance product
- Deal product
- Best Seller product
- Ecodesign product
- New product
- Staff Pick product
- In The News product
- Innovation product
- product
- Black Friday product
- New Deal product
- Cyber Monday product
- Clearance product
- Deal product
- Best Seller product
- Ecodesign product
- New product
- Staff Pick product
- In The News product
- Innovation product
- product
Btwin ST120 Kids' Mountain Bike 20" Kids 3'11" to 4'5"
To take on the first slopes, our engineers have equipped this kids' MTB with 6 speeds. This bike allows the rider to take on sloping terrain.
See shipping rate at checkout
Final Sale: No returns or exchanges
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Videos
Product Features
Easy to use
Equipped with a grip shifter to easily change gears (6 speeds).
Brake control
New Easy break brake levers are sized for kids' small hands.
Efficiency
Tires with side lugs for good grip in the turns.
Seat comfort
A saddle with a sporty design, sized especially for kids.
Questions & Answers
There are no questions
Be the first to post a question
Product Customer Reviews
Loading reviews…
my son likes this bike
Mantap
A simpler gear control would be nice, with two levers instead of a fist. A lighter frame would be appreciated
steel frame bike have a fair amount of weight but not impressed that the staff did not check the order first which the bike does not tighten the nut on the bike neck Sister brought it out to try riding at the track. The car fell over because the bike's neck fell off. Have to push it back to the staff to help tighten the bike neck lock nut again. Good thing he wasn't injured. I want the staff to check the order before delivering the product.
when comparing looks and functions that are the same as those of neighbors bought from other stores
the bike is great, the price is reasonable!
Quickly picked up by my 7 year old boy
We bought the bicycle as well as some accessories, right there at Decathlon the technician from the bicycle area made the corresponding adjustments, however, he left some loose parts that make handling difficult when using the bicycle, now I have to schedule to take it back for said adjustment…….
My 6 year old can handle this bike with ease and shifting gears and breaks are made for his hands
very good bike, I recommend it
The quality of the bicycle is good, however the person in charge of assembling it did not leave it well adjusted on the brakes
Additional Product Information
Composition
Bike frame : 100.0% Steel
Frame designed for mountain biking
Our engineers have designed a new, robust steel frame. The frame's rear chainstays are short, making the bike responsive and easy to handle.
Why have we created a brake lever specifically for kids?
Because kids have smaller hands than adults, it's not always easy for them to reach the brake lever. This is why our engineers designed a brake lever that is closer to the handlebars and thus easier to hold.
Changing gear
This bike is equipped with a grip shifter to change between the 6 speeds: an easier, safer system as the kid's hands stay on the handlebars. This makes changing gears to match the terrain simple and easy!
A reinforced, ergonomic saddle
A saddle with a sporty design, designed with care to adapt to the morphology of kids. It is equipped with a plastic section on the rear (a bumper) to protect against any impacts.
Controlled braking
2 V-Brake pads for effective braking.These brakes are composed of calipers that exert more or less pressure on the rim to slow or stop the rotation of the wheels.
Storage instructions
Store the bike in a clear, dry place. Clean and grease the chain regularly. Our tips for before each ride: Inflate the tires to the pressure indicated on the sidewall.
Guarantee
for life (frame, stem, handlebars, rigid fork). Find out more about this bike's warranty.
Origin
Imported
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
-
Research and development
delivers high-quality cost-effective products
-
State-of-the-art production processes
minimize manufacturing costs
-
Optimized supply chain
reduces retail prices
-
Minimal retail footprint
lowers overhead and indirect costs
Btwin ST120 Kids' 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.