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
/origin-imgresizer.eurosport.com/2018/10/09/2437131-50641390-2560-1440.jpg "Review: B'Twin by Decathlon's Rockrider 520 Mountain Bike - Eurosport")
Review: B'Twin by Decathlon's Rockrider 520 Mountain Bike - Eurosport
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