Rebuild Service for E-Z-GO RXV with Danaher (83A21102A) controllers. When you purchase this product, you are pay for the service of having your controller rebuilt. Within 1 business day of ordering this service you will be emailed a form and an address to return your controller to be rebuilt. Your controller will be rebuilt (5-7 business days in house) and return directly to you. Your controller will be covered by a one year warranty that covers defects. Cost of this product covers the cost of us shipping your controller back to you but you will be responsible for the cost of shipping your controller to us for rebuild. Looking for an upgrade? Consider going with a 600A Navitas controller with an On the Fly programmer. CLICK HERE to learn more.