Box Three Prime 9 X-Wide Groupset (9 Speed) (Single Shift) (12-50T)

While most companies now days are expanding their drivetrains upwards of 13 speeds, Box believes that more is not necessarily better. The Idea behind the 9-speed drivetrain is to keep things simple while receiving the same gear range in a more efficient package; resulting in less shifting error, which produces a more user friendly experience.

• Wide range 9 speed single-shift group for use with e-bikes
• Simple durable performance without all the bells and whistles
• Includes E-bike optimized 12-50t cassette, rear derailleur, shifter and chain
• Single shift per swing for E-Bike safe shifting
• Wide ratio with consistent progression
• Glass fiber / nylon composite, steel and aluminum construction