![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 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](https://preview.redd.it/p6rm2trhtno61.jpg?width=640&crop=smart&auto=webp&s=bc95e801f9065aaacc98028bf795678876c753d9)
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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Decathlon RockRider ST 520 | Best Off-Roading MTB | 2021Model | Btwin Gear Bicycle | MTB Cycle - YouTube
![Btwin Rockrider 520 S 2018|Gear Cycle with Disc Brakes|27.5" MTB cycles below Rs.50,000|Bicycle@ChooseMyBicycle.com Btwin Rockrider 520 S 2018|Gear Cycle with Disc Brakes|27.5" MTB cycles below Rs.50,000|Bicycle@ChooseMyBicycle.com](https://s3.ap-south-1.amazonaws.com/choosemybicycle.webp/images/reviews/btwin-rockrider-520-s-2018-design.webp)
Btwin Rockrider 520 S 2018|Gear Cycle with Disc Brakes|27.5" MTB cycles below Rs.50,000|Bicycle@ChooseMyBicycle.com
![decathlon mountain bike rockrider All products are discounted, Cheaper Than Retail Price, Free Delivery & Returns OFF 72% decathlon mountain bike rockrider All products are discounted, Cheaper Than Retail Price, Free Delivery & Returns OFF 72%](https://www.sport-und-abenteuer.de/wp-content/uploads/2016/10/Rockrider-520-Decathlon-Mountainbike-2.jpg)