![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://i.redd.it/p6rm2trhtno61.jpg)
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
![Vand BICICLETĂ MTB ROCKRIDER 520, 27,5" , cadru S - Biciclete - MTB Cross Country (MTB clasic) second hand Vand BICICLETĂ MTB ROCKRIDER 520, 27,5" , cadru S - Biciclete - MTB Cross Country (MTB clasic) second hand](https://www.dirtbike.ro/user_data/buysell/images/1300582_medium.jpg)
Vand BICICLETĂ MTB ROCKRIDER 520, 27,5" , cadru S - Biciclete - MTB Cross Country (MTB clasic) second hand
![Vand BICICLETĂ MTB ROCKRIDER 520, 27,5" , cadru S - Biciclete - MTB Cross Country (MTB clasic) second hand Vand BICICLETĂ MTB ROCKRIDER 520, 27,5" , cadru S - Biciclete - MTB Cross Country (MTB clasic) second hand](https://www.dirtbike.ro/user_data/buysell/images/1300580_medium.jpg)