If it does not match, it will easily damage the machine. PLEASE NOTE:The E-BIKE Wheel Kit is not waterproof, so please don’t ride at rainy day Note: while connecting the controller to the wires, please make sure that you connect the right colors to the controller. Otherwise, the controller may be broken. LCD display can not be connected to this kit. (please give us your LCD parameters) Note: We use the brake cable with a power cord, our clients can use disc brakes but can not use hydraulic brake. About the battery: the size of amps determines the amount of battery stor. 26 inch 1000W Front Wheel Electric Bicycle Motor Conversion Kit 48V E-Bike Parts. The E-BIKE Wheel Kit is not waterproof, so please don’t ride at rainy day. While connecting the controller to the wires, please make sure that you connect the right colors to the controller. (please give us your LCD parameters). We use the brake cable with a power cord, our clients can use disc brakes. But can not use hydraulic brake. The size of amps determines the amount of battery storage, the battery storage determines the length of using time, the battery in our pack must match the interface of our controller, the following picture is the controller interface. When installing, make sure that the wiring is not reversed. Otherwise, it may damage the product. Flat fork width: Min. Spokes and Aluminum Circle. Twist Throttle with 5 star. E-bike conversion kit for front wheel. THE BATTERY IS NOT INCLUDED. This electric bicycle kit contains everything needed (except battery) to be your bike in a hoche performance. Which provides unparalleled performance and reliability. France, Germany, spain, Italy. Feedback is very important to us. It is impossible to address issues if we do not know about them! Please keep the original box or packaging within 15days since item received. Your satisfaction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it’s non-workdays, please kindly be patient and wait till Monday.