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Controller · OEM · Rad Power Bikes
RadCity 4 / RadCity Step-Thru 3 controller
No public part number
- Connector
- Round threaded/keyed Rad connectors ('internal notch and pins, external arrows')
Guide covers RadCity 4 and RadCity Step-Thru 3 (direct-drive hub). Four Phillips mounting bolts + bracket. EBR RadCity 4 review: 'fully potted motor controller' behind the seat tube, 48 V system. No amps/part number published.
Fits these bikes
- VerifiedRadCity 4 2020–2022Rad controller replacement guide is written for this modelRad Power Bikes support · checked Sep 8, 2026
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