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 Rockrider 520 Mountain Bike (2017) - Cross country (XC) bike
Btwin Rockrider 520 Mountain Bike (2017) - Cross country (XC) bike
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Btwin Rockrider 520 - Pedal Room
BTWIN ROCKRIDER 520 MTB CYCLE
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Btwin Rockrider 520 Review & Price in India [Latest 2020] #VelocrushIndia #SwitchToCycle - YouTube