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2020 B'TWIN Rockrider 540 Kids' 24-Inch City Bike Ages 9-12 – Specs, Comparisons, Reviews – 99 Spokes
2021 ROCKRIDER 27.5" Full Suspension Mountain Bike ST 540 S - Specs, Reviews, Images - Mountain Bike Database
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
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