Box Four 8-Speed 12-42T E-Bike Cassette Size:12-42T Box Three Prime 9 Multi

Box Three Prime 9 Multi Shift Shifter

This is possible by using a spoke that is 14g at the ends but 15g in the middle

adding an extra tooth to each of the three highest gears

this combination makes for an exceptional strength to weight ratio

Box Four 8-Speed 12-42T E-Bike Cassette Size:12-42T Box Three Prime 9 MultiThe Box Four E Bike Cassette offers high gears with more teeth to withstand the rigors of modern E Bike riding. Adding an extra tooth to each of the three highest gears provides increased durability and decreased wear by distributing the load over a larger area! Box Four adapts our Prime 9 philosophy of durability, simplicity, and reliability at a great price point. All cogs are stamped from steel, given our durable black coating and then the larger