The New Rockrider ST 120 | Our team has designed this 27.5” MTB with a single chainring and disc brakes for your first rides of up to 1.5 hours in dry weather.
![All New DECATHLON Rockrider ST120 | 2021 Decathlon Btwin Rockrider ST120 | Best Btwin MTB | Gear MTB - YouTube All New DECATHLON Rockrider ST120 | 2021 Decathlon Btwin Rockrider ST120 | Best Btwin MTB | Gear MTB - YouTube](https://i.ytimg.com/vi/8XT3zztShhU/hqdefault.jpg)
All New DECATHLON Rockrider ST120 | 2021 Decathlon Btwin Rockrider ST120 | Best Btwin MTB | Gear MTB - YouTube
![2020 B'TWIN Rockrider ST 120 20" Kids Mountain Bike Ages 6-9 – Specs, Comparisons, Reviews – 99 Spokes 2020 B'TWIN Rockrider ST 120 20" Kids Mountain Bike Ages 6-9 – Specs, Comparisons, Reviews – 99 Spokes](https://d2yn9m4p3q9iyv.cloudfront.net/btwin/2020/rockrider-st-120-20-kids-mountain-bike-ages-6-9/thumbs/400/0c676.jpeg)