Box Four 8-Speed 12-42T E-Bike Cassette
The 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 cogs are pinned to each other with spacers for easy installation.
Please see page 6 of our guide for notes regarding the 2 HG drivers.
Great upgrade for my ebike conversion!
I converted my old Cannondale to an ebike using a TSDZ2. On the first ride using the original Shimano XT 9-speed, I dropped the chain on a bumpy downhill section. I upgraded to the 8-speed with the chainring and haven't lost a chain since. The extra range on the low-end is really nice and the 32Tx46T gear allows me to climb almost anything. Its very robust and I can shift under power even with the motor putting out about 750W. The value is excellent and compared to other extremely expensive drivetrains, I can affordably replace components if they wear out from the added load of the motor.