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
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Review: B'Twin by Decathlon's Rockrider 520 Mountain Bike - Eurosport
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Btwin Rockrider 520 S 2018|Gear Cycle with Disc Brakes|27.5" MTB cycles below Rs.50,000|Bicycle@ChooseMyBicycle.com
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Btwin Rockrider 520 S (2018) Review | ChooseMyBicycle.com
