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Rockrider ST100, Kids' Mountain Bike, 24''
We've designed this robust, easy-to-use (1 chainring) 24-inch children's MTB for helping children to get started with mountain biking.
Free shipping over $35
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Features

Easy to use
Equipped with a grip shifter to easily change gears (6 speeds).
Brake control
2 V-Brake pads for effective braking.
Efficiency
Tires with side lugs for good grip in the turns.
Cycling comfort
A saddle with a sporty design, specially sized for children's build.
Product Lifestyle Image Gallery
Image Gallery




Product Customer Reviews

This looked like a great bike at first, but after my son rode it for a day, one of the pedals detached and we cannot screw it back in place (the thread is broken.) I contacted customer service, who promesses that the Cycling Manager would call me (they set up a meeting time with me), but no one called. We are very disappointed and do NOT recommend this bike. Customer service gets an F since they failed to contact us... Now we are stuck with a bike that’s useless...
I lived in France and rode Rockriders. It's a good, solid bike. The brakes and derailer we're we'll set up on arrival. My only complaint is that it doesn't have a suspension fork.
Very good
This was a gift for our 10 year old son. Previously on training wheels, we used this bicycle to help him balance & ride solo. Amazingly enough, he was able to do so after the second practice. This bicycle was built well and I appreciate the guard-bar that protected the rear gears. He fell several times during practice with loads of dents/scratch-marks found on this piece that was protecting the gears. I do recommend this to other parents and I employ everyone to purchase online as delivery is provided. Aydin & his bike: https://bit.ly/3aL3b9n
Hello Rehman!
Thank you for the review for the Rockrider ST100 24" Mountain Bike.
This is a good kids' bike for beginners. Thanks to the sturdy steel frame and 6 speed grip shifter, the bike is built to be durable and changing gear is safer and easier for children! Yes indeed, the derailleur guard is effective in protecting the derailleur in the event the bike is dropped multiple times.
I hope you enjoy your purchase, stay safe and have a great day ahead! :)
Your coffee shop commuter
Hafiz
Bought for my 8 year old son, 130cm tall. The item was delivered in good condition before the expected delivery date. But the cycle doesn’t come with a stand. Need to order that separately. Didn’t see such a clause in the description. Would be good to mention that.
Hello Parvathi,
Thank you for submitting your review and suggestion for this Rockrider ST 100 Kids' 9-12 years 24" Mountain Bike!
Your feedback matters as it allows us to further understand how you use our products and online platforms and how we can improve to serve your needs better. Just to clarify, all our 20" and 24" kids bikes do not come with a side stand. There is also some information about the bike accessories included with this bike on the product page, under the sections "TECHNICAL INFORMATION" > "BIKE ACCESSORIES". This information can also be found under the "ASK A QUESTION" section, if you search for the keyword "stand".
Nevertheless, thank you once again for your feedback, our digital team will take note to make this information clearer and more accessible for all our customers in the future :)
We look forward to more of your reviews and sharing! In the meantime, keep sporting on, and we hope to see you in our stores soon! :)
Sport on safely!
Amalina
Digital Interaction Relay
The only thing my son did not like was the grip shifter. It makes his palm quite painful after riding and the up shifting is not smooth. Otherwise, this is 100% worthy for entry level MTB.
Hi Brandon,
Thanks for your honest opinion on the grip shifter on the ST100 24" Mountain bike. Yes I agree that the supplied entry level grip shifter is stiff and not the easiest for kids to use. You could try our kid's gloves @ https://bit.ly/2Do2sxX to add comfort to your son's palm.
Chris
Kid's Bike Sport Leader, Decathlon (Joo Koon)
Good value for the money. It works. My son is happy!
Hi Robert
Thank you very much for sending me your reviews. I am so glad that you love our product and find it great for value! I am happy that your son enjoys his bike too.
Keep your sharing coming.
Continue sporting and stay fit!
Worry Less Zumba More
Caroline Lee
Front Line Customer Service Adviser & Zumba Diva
Decathlon Joo Koon
Me parece que hice una muy buena compra para mi hija, hay más baratas en otros lados pero ésta es muy solida, ligera y cero ruidos. Estoy contento con lo que obtuve por lo que pagué.
excellent vélo, je le recommande vivement !!!
อยากให้มีบริการรับซ่อมที่บ้านด้วย
สวัสดครับ คุณลูกค้า
ขอบคุณที่ไว้วางใจสินค้าของดีแคทลอนครับ และขออภัยที่เรายังไม่มีบริการนี้ครับ แต่ในตอนนี้คุณสามารถนำรถมาที่ศูนย์บริการใกล้บ้านได้ทุกสาขาเลยนะครับ
Khanit
Size Guide

Additional Product Information
Composition
Bike frame
- 100% Steel
A frame that is suitable for mountain biking
Our engineers have designed a new sturdy steel frame. The frame's rear chainstays are short, making the bike responsive and easy to handle.
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.
Changing gears (6 speeds)
This bike is equipped with a grip shifter to change between the 6 speeds: It's a safer and easier system for children so they don't need to let go of the handlebar. 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 children. It is equipped with a plastic cover at the back (a bumper) to protect from any potential impacts.
Riding position
To provide you with maximum comfort, this mountain bike is equipped with a high-rise stem. Your position on the bike is slightly raised so you can better anticipate your trajectory.
Crankset
The new chainset has a 152 mm crank that is designed for a child's leg length. This chainset allows you to start pedaling more easily. The double chain guard prevents the chain from derailing.
24" wheels and mtb tires
To transport the bike, we’ve made it easy to remove and attach the front wheel. It is equipped with a quick-release system. The tires are designed for mountain biking. The side lugs provide good grip for cornering. The recommended tire pressure is indicated on the side of the tire (2 to 3.5 bars). 24" inner tube, 1.7" to 2.2" Schrader valve.
Bike accessories
This MTB is equipped with a bell, lighting, wheel reflectors and platform pedals. The frame is also compatible with other B'Twin accessories: - front and rear mudguards; - stand; - bottle holder; - bike bags; - stabilizers
Dimensions of the bike ready to use
Length: 63". Height: 39.4". Width: 22".
Origin
Imported
Storage instructions
Store the bike in a clean, 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 the bike guarantee.
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
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Research and development
delivers high-quality cost-effective products
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State-of-the-art production processes
minimize manufacturing costs
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Optimized supply chain
reduces retail prices
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Minimal retail footprint
lowers overhead and indirect costs