Controller for Rad Power Bikes RadCity 4 High-Step (2020-2022, external battery, direct-drive)

1 verified option, 1 likely match. Change part

Compatible — verified

Rad controller replacement guide is written for this model

Illustration

RadCity 4 / RadCity Step-Thru 3 controller

Fits
Rad Power Bikes · RadCity 4 · High-Step (2020-2022, external battery, direct-drive)
Part
ControllerOEMRad Power Bikes
Reference
No public part number

Part page

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, 48V system. No amps/part number published.

Source: Rad Power Bikes support: RadCity 4 / RadCity Step-Thru 3 controller replacement guide

Last verified Sep 8, 2026 · 0 owners confirmed, 0 reported a problem

Where to buy

No seller listed yet for this part.

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Did this part work on your bike?

No owner has reported on this one yet.

Probably compatible

Area 13: 'Older City/Wagon (untested; adjustments may be needed)'; Bolton KB: 'customers have reported it works well'. RadCity 4 uses a direct-drive hub, not covered explicitly.

Illustration

Area 13 / Bolton Ebikes Rad Upgrade Kit - 35A controller + color LCD8H display

Fits
Rad Power Bikes · RadCity 4 · High-Step (2020-2022, external battery, direct-drive)
Part
ControllerAftermarketArea 13 Ebikes (Bolton Ebikes)
Reference
No public part number

Part page

Voltage
48 V
Output
35 A
Connector
Rad motor cable plug-and-play; unused tail-light plug
Protocol
Paired with included KT-style color LCD8H display (must be used together)

Page: 'Compatible with both 48v and 52 batteries. (NOT recommended for 60v)'. Plug and play: 2016-2018 Rover, 2019-2021 Rover (up to Rover 5), Runner, Runner Plus, Mission, RadExpand 5 (cadence). Limited: Mini 2018 and prior, older City/Wagon untested. 'Does not work' with Rover 6 Step Over & Step Through, RadWagon 5. Bolton KB: RadMini controller 'substantially larger than stock and will not fit inside the frame'; RadRunner 'tested and working (minus tail light)'.

Source: Area 13 Ebikes 'Upgrade Kit Rad Radpower' product page

Last verified Sep 8, 2026 · 0 owners confirmed, 0 reported a problem

Where to buy · from $229

  • Area 13 Ebikes
    AftermarketOut of stock
    Checked Sep 8, 2026
    $229
    View offer

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Did this part work on your bike?

No owner has reported on this one yet.