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DIY Conversion Kit for Brompton Bike (with Built-in Speed Sensor)

Battery YL-MBW0
Battery YL-MJF0
Battery YL-MSF0
Sensor ERS-S01B
Motor ERM-A216F.325
Controller ERC-KS691.997-15-3F
Display Meter ERD-C201
Accessories 396.0152836911

DIY Conversion Kit for Brompton Bike (with External Speed Sensor)

Battery YL-MBW0
Battery YL-MJF0
Battery YL-MSF0
Sensor ERS-RX212R
Motor ERM-A216F.325
Controller ERC-KS691.997-15-3F
Display Meter ERD-C201
Accessories 396.0152836911