Compare: 2020 ROCKRIDER 27.5" ST 530 Mountain Bike vs ST 520 Mountain Bike vs St 520 Mountain Bike, - 27.5" – 99 Spokes
![Decathlon RockRider ST 520 | Best Off-Roading MTB | 2021Model | Btwin Gear Bicycle | MTB Cycle - YouTube Decathlon RockRider ST 520 | Best Off-Roading MTB | 2021Model | Btwin Gear Bicycle | MTB Cycle - YouTube](https://i.ytimg.com/vi/ygWHy8zez70/maxresdefault.jpg)
Decathlon RockRider ST 520 | Best Off-Roading MTB | 2021Model | Btwin Gear Bicycle | MTB Cycle - YouTube
![Decathlon Btwin RockRider ST 520 || Btwin Gear mtb Bicycle || Best Btwin MTB || Off-Road MTB | 2021 - YouTube Decathlon Btwin RockRider ST 520 || Btwin Gear mtb Bicycle || Best Btwin MTB || Off-Road MTB | 2021 - YouTube](https://i.ytimg.com/vi/y_-Sy-qu2uY/maxresdefault.jpg)
Decathlon Btwin RockRider ST 520 || Btwin Gear mtb Bicycle || Best Btwin MTB || Off-Road MTB | 2021 - YouTube
![Decathlon #Unboxing #RockRider ST 520 | Best Off-Roading MTB | 2021 Model | Btwin Gear Bicycle - YouTube Decathlon #Unboxing #RockRider ST 520 | Best Off-Roading MTB | 2021 Model | Btwin Gear Bicycle - YouTube](https://i.ytimg.com/vi/NXXSO0GZG10/maxresdefault.jpg)