Are you unsure whether to choose the simplicity of the Box Three group or the durability of the Box Two group? You don’t have to choose! With the Box Components Two/Three Prime 9-speed 11-50 Multi-Shift group, you can enjoy a cassette and chain set from the Box Three, combined with the derailleur and shifter from the Box Two, whose Multi-Shift version allows you to shift multiple gears with a single lever pull. For installation on an e-bike, we recommend a Single-Shift version. With the Box Components Two/Three Prime 9-speed 11-50 Multi-Shift group, you can optimize your mountain bike with this complete group that benefits from all the advantages of Prime 9 technology and is designed to provide reliable and powerful shifting on challenging terrain.