Video by Dillenger Electric Bikes via YouTube
Source
BAFANG E-Learning – DIY Installation of M625&M325 Drive System
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AU: https://dillengerelectricbikes.com.au/collections/bafang-mid-drive-kits/products/bbs-m625-bafang-mid-drive
NZ: https://dillengerelectricbikes.co.nz/products/bbs-m625-bafang-mid-drive