Ultra Bee – OEM Controller Assembly

Name: Ultra Bee - OEM Controller Assembly
SKU: 1789
Availability: InStock

$649

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Description
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This is the factory MTPA/MTPV motor control unit for the 2025 Surron Ultra Bee HP, cross-matched to part number 21100-YQ5A-22B0 (also listed as 21100-YQ5A-Z3). It manages power delivery from the hairpin-wound permanent magnet motor, translating throttle input into smooth, precise acceleration across every ride mode from Eco to Turbo. Built specifically for the MY25 platform, this controller is not backward compatible with MY23-24 Ultra Bee models, so confirming your model year before ordering matters. Whether you’re replacing a failed unit or restoring factory-tuned performance after a swap, this genuine Surron controller keeps your throttle response, torque curve, and ride mode switching exactly as engineered.

Model Year Fitment. 2025 Surron Ultra Bee HP only, not compatible with MY23-24 controllers or wiring.

Control Strategy. MTPA/MTPV (Maximum Torque Per Ampere / Maximum Torque Per Voltage) field-oriented control for efficient power delivery and reduced heat buildup.

Motor Compatibility. Tuned specifically for the hairpin-wound permanent magnet motor used on MY25 Ultra Bee HP platforms.

Installation Type. Genuine OEM replacement, direct plug-in with the stock wiring harness — no aftermarket tuning or flashing needed.