- Wide range 9 speed single-shift group for use with e-bikes
- Includes cassette, rear derailleur, shifter and chain
- E-bike optimized 12-50t ultra-wide ratio cassette with consistent progression
- Single Shift Per Swing for E-Bike Safe Shifting
- Derailleur features Box`s Tri-Pack Limited Slip Clutch
- Glass fiber / nylon composite, steel and aluminum construction
- Matte black finish