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Kids' RR ST100 20'' Mountain Bike

Sale price: $249.00 Regular price:
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Sale price: $249.00 Regular price:

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San Francisco, 735 Market St. Options

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Model: 8549158

Product Features

A photo of the Kids' RR ST100 20'' Mountain Bike in use

Kids' RR ST100 20'' Mountain Bike is designed for

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.

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.

Product Customer Reviews

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Kids' RR ST100 20'' Mountain Bike,white
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Quality Budget bike

This is the cheapest I could find for my 6years old on the store and he’s loving it

icon-circle-checkmark verified purchase

Hi Kelvin,

Thank you for the endorsement! Ride safe and have fun!


no rest stand!

Buyers should be alerted that bike does not come with a rest stand, which all the bicycles we have bought before has - especially for a kids bike. only realised upon delivery. shld be part of bike! otherwise, decathlon should at least alert buyers in the shops (where we tried out the bikes, and all there had stands!) or on the specs section pre purchase. cheers

Hi Yun!

Firstly, I'd like to apologies for the inconvenience you have faced, due to the bicycle does not comes with a kickstand. For your information, not all our kids bikes comes fitted with a bike stand, however the kickstand can be purchased separately for our 16", 20" and 24" kids bikes. . Thank you for feedback, we will work on improving our service in store and also the information on the website to prevent disappointment for our customers and users.

Decathlon City Square Mall will be having the DECARNIVAL on the 15th and 16th June @ City Square Mall Fountain Square. We are inviting all our members and their family members to join us for some games! Hope to see you there!

Decathlon City Square Mall

Size Guide

Size Guide Visual

Additional Product Information


Bike frame

  • 100% Steel


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 (battery-powered lights, horn, reflectors). The rear derailleur guard protects the derailleur from damage in the event of an impact.



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