35A FOC Controller Upgrade Kit for Rad Power Bikes (RadRover 6 Plus & RadCity 5 Plus Compatible)

⚡ COMING SOON: The Ultimate Rad 6+ Power & Tech Resurrection Kit

🚨 PRE-ORDER NOTICE & ESTIMATED SHIPPING:
• Status: PRE-ORDER ONLY (Batch 1 Limited Production)
• Expected Ship Date: Late August 2026 (Ships in approx. 3-4 weeks)
• Lock in your kit now — Limited units available for the first production run! 
  Orders will be fulfilled on a first-come, first-served basis.

The controller matches the original dimensions, allowing for a direct plug-and-play replacement while maintaining a clean, factory look(96mm*58mm*36MM)

Are you tired of the sluggish throttle, the fragile factory wiring, and the fear of a sudden controller burnout? 

Meet the  Ultima 35A FOC Upgrade Kit**—the most advanced, heavy-duty, and feature-packed controller system ever engineered for the **RadRover 6 Plus** and **RadCity 5 Plus**. 

We didn’t just build an aftermarket controller. We analyzed the original factory controllers  engineered out all their notorious hardware vulnerabilities, and fused their best traits into one indestructible, high-performance powerhouse.

🚀 Why the Ultima Kit Changes Everything:

1. 35A FOC Sine Wave Technology — Butter-Smooth & Whisper-Quiet
Say goodbye to the loud motor hum and jerky takeoffs. Our **35A Field-Oriented Control (FOC)** delivers insanely smooth, linear acceleration while unlocking the true peak torque of your Bafang motor. No shutter, no lag—just pure, relentless power.

2. Bulletproof Circuitry — No More Blown PAS Sensors
Original Rad controllers are notorious for back-feeding voltage and frying the PAS (Pedal Assist) sensor or the display when a short occurs. The Ultima features **industrial-grade physical opto-isolation**. Even if your wiring gets damaged, your core electronics remain 100% protected. 

3. Advanced Thermal Management — Zero Heat Fade
Equipped with a custom-potted aluminum heat-sink housing and automotive-grade MOSFETs. Whether you are climbing steep hills or throttling through sand, this controller runs ice-cold with **zero thermal throttling or heat-induced power fade**.

4. Next-Gen Safety: Heavy-Duty Headlight 
High-Power Headlight Support:** Finally, a controller that can feed high-wattage custom front lights without blowing the internal lighting circuit.
5. Supercharged Stock Display Integration
Want to keep that clean, original look? Our controller seamlessly integrates with your **original Rad-branded display and button pads**, while unlocking hidden display diagnostics, higher speed readouts, and customizable riding modes that the factory firmware locked away.

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