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Rockrider ST900 Mountain Bike 24" Kids 4'5" to 4'11"
THE 24" mountain bike.Aluminum frame, 8 speeds, trigger shifters, suspension fork and disc brakes; everything your child needs for a sporty, comfortable ride!
See shipping rate at checkout
Final Sale: No returns or exchanges
See our return rules for heavy items
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Videos
Product Features

Easy to use
Alu frame, 8 speeds, trigger shifters,quick-release with front and rear wheel
Bike safety
Disc brakes, knobbly tires, derailleur guard, and Aheadset stem.
Cycling comfort
suspension fork
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Product Customer Reviews

my son is enthusiastic about the bike
2nd bike we buy of this model. He's great.
Nice bike with good suspension for the brakes, which surely explains the high price.
Yes and good
Great bike for little ones, the best on the market. A little expensive but you pay for the quality...
I am very satisfied with the product
The main thing, the price, seems high to me, but as the market is, average. Assembly was quick in the store. So fast that I had to do a little review at home. The bike had a defect, a damaged fork sticker, in the store they told me what was wrong and in customer service that they could only give me a solution in the store. That's mainly why I don't give it more stars. The bike, beautiful and adequate, that for the price it has, I expected no less.
Great bike, also suitable for children from 130 cm, if they already know how to ride a bike. My son is very satisfied with the bike, it rides nicely and comfortably.
Very well equipped bike! Beautiful finishes of the bike.
Very nice mountain bike, solid, well designed
Perfect
I bought the bike last year in February for my son. Since then he has been using it and we are very satisfied.
GOOD
Nothing to say. My son is happy with his bike.
Approx
Size Guide

Additional Product Information
Composition
Bike frame : 100.0% Aluminium 6061
Frame
Made out of aluminum for a lightweight frame.The Aheadset stem makes maintenance easy and makes the frame more sturdy for riding on any kind of terrain.Its rear S-bend stays optimize braking performance and make it easier to get through mud.
Suspension
Suspension fork to dampen vibrations from rough and rugged paths or terrain.
Drivetrain
Change gears (8 speeds) using trigger shifters (on the handlebar).
Brakes
Mechanical front and rear disc brakes for powerful, precise braking. Braking power is not affected by mud or bumps.
Handlebars / stem / steering
Suspension fork dampens vibrations on rough terrain for added comfort and better control.The Aheadset stem provides additional safety during all-terrain cycling.
Guarantee
Lifetime (frame, stem, handlebars). Details on btwin.com. Availability of spare parts: 2 years
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
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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