Description: Unleash your e-bike's full potential.This program modifier removes throttle speed limits, enabling speeds up to 28 mph (approx. 45 km/h). ?? Disclaimer: Always comply with local regulations and ride safely. High-speed riding in some areas may require a driver's license, vehicle registration, or insurance. ?? Warranty Notice: Sustained high-speed riding increases motor load and may shorten its lifespan. After installing this controller, the motor warranty is reduced to 1 year or 10,000 kilometers (whichever comes first). *Images are for reference only; actual product may vary. How to do it ?