![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/tfs2vsYbVew/maxresdefault.jpg)
Decathlon #Unboxing #RockRider ST 520 | Best Off-Roading MTB | 2021 Model | Btwin Gear Bicycle - YouTube
![Compare: 2020 ROCKRIDER 27.5" ST 520 MTB vs ST 520 Mountain Bike vs ST 540 Mountain Bike, / - 27.5" – 99 Spokes Compare: 2020 ROCKRIDER 27.5" ST 520 MTB vs ST 520 Mountain Bike vs ST 540 Mountain Bike, / - 27.5" – 99 Spokes](https://99spokes.com/api/og/compare?i=%2Frockrider%2F2020%2F27.5-st-520-mtb%2Fthumbs%2F400%2F18c84.jpeg%2C%2Frockrider%2F2020%2Fst-520-mountain-bike%2Fthumbs%2F400%2F12155.jpeg%2C%2Frockrider%2F2020%2Fst-540-mountain-bike-27.5%2Fthumbs%2F400%2F0a2ef.jpeg&token=4f3c1b76919afabb204250f7b23893c34eb818efa3c9fad9f861d2709dbf58b6)
Compare: 2020 ROCKRIDER 27.5" ST 520 MTB vs ST 520 Mountain Bike vs ST 540 Mountain Bike, / - 27.5" – 99 Spokes
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VICMA shift toe Decathlon shift Pointer V Bike Decathlon RR9 type H, 8XC, Rockrider 5, Rockrider ST 520 27.5/ST 540 27.5/ST900/8.1/8.0 /9./9.2/9.3 and 9.9, Riverside 500/900/920 E-ST 500... - AliExpress
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5pcs Derailleur Hanger For Decathlon Rockrider St 520 540 St900/8.1/9.1 Riverside 500/920 E-st Dropout High-quality Al7005 - Bicycle Derailleur - AliExpress
![5pcs Derailleur Hanger For Decathlon Rockrider St 520 540 St900/8.1/9.1 Riverside 500/920 E-st Dropout High-quality Al7005 - Bicycle Derailleur - AliExpress 5pcs Derailleur Hanger For Decathlon Rockrider St 520 540 St900/8.1/9.1 Riverside 500/920 E-st Dropout High-quality Al7005 - Bicycle Derailleur - AliExpress](https://ae01.alicdn.com/kf/H1f943f5343094712b50ce76b8ca5a661Y.jpg_640x640Q90.jpg_.webp)