My friend has a Btwin rockrider 520 (image attached) needing to replace the bottom bracket trying to figure out what type it is : r/bikewrench
BTWIN by Decathlon ROCKRIDER 520 BLACK MTB CYCLE 27.5 T Mountain/Hardtail Cycle Price in India - Buy BTWIN by Decathlon ROCKRIDER 520 BLACK MTB CYCLE 27.5 T Mountain/Hardtail Cycle online at Flipkart.com
Btwin rockrider 520 MTB 2018 - YouTube
Btwin Rockrider 520 Mountain Bike (2017) Expert Review | ChooseMyBicycle.com