Groups Three Prime 12-46 Single-Shift E-Bike

The Box Components Three Prime 9-speed 12-46 groupset offers many of the same capabilities as the Box One and Box Two groupsets, but on a simpler platform. The Box Components Three 12-46 cassette is optimized for e-bikes thanks to a 12-tooth start and the addition of an extra tooth in each of the three highest gears. The derailleur uses limited-slip clutch technology without the Tri-pack features. The shifter is limited to one sprocket change per lever action to increase cassette life. Last but not least, a Prime 9 chain without treatment...