B'TWIN Rockrider 540s, full suspension electric mountain bike, fitted with a high performance Bafang BBSHD mid-drive electric motor with a 52v14ah... | By Ebike Choices | Facebook
B'TWIN Rockrider 540s full suspension electric mountain bike. Converted for off-road use, using a high performance Bafang BBSHD mid-drive electric motor... | By Ebike Choices | Facebook
![2020 ROCKRIDER ST 540 Mountain Bike, Lacquered Alloy - 27.5" – Specs, Comparisons, Reviews – 99 Spokes 2020 ROCKRIDER ST 540 Mountain Bike, Lacquered Alloy - 27.5" – Specs, Comparisons, Reviews – 99 Spokes](https://d2yn9m4p3q9iyv.cloudfront.net/rockrider/2020/st-540-mountain-bike-lacquered-alloy-27.5/thumbs/1000/28f93.webp)