Bicycle Shifter 7 Speed / 21 Speed

This is a dedicated e-bike accessory for 7 or 21 speed e-bike replacement shifters. The shifter is divided into left and right sides, the left side is 3-speed, the right side is 7-speed. If your ebike is a 7 speed, then you only need to replace the right side. If your ebike is a 21-speed and you need to replace the whole set of shifters, please choose one 3-speed shifter and one 7-speed shifter when purchasing. If you are not sure if your e-bike is suitable, please contact our online customer service for advice, thank you very much！