BOX Two Prime 9 eBike Cassette - 9-Speed 12-50t Black Model=E-Tube Wires and Connectors }Full Speed Ahead Energy Modular

}Full Speed Ahead Energy Modular Direct Mount Chainring - 50t Outer Ring FSA Direct Mount For use with 34t Inner Ring Black

Optimized Q-factor for compatibility with most frame/motor combinations

When not in use it stores under the saddle or just take it off

A 13-tooth delta on all chainring pairs ensures precise shifting for any setup as well as a less dramatic change in cadence during front shifts

BOX Two Prime 9 eBike Cassette - 9-Speed 12-50t Black Model=E-Tube Wires and Connectors }Full Speed Ahead Energy ModularBOX Two Prime 9 eBike Cassette 9 Speed 12 50t Black. The BOX Two Prime 9 Cassette delivers long service life and extra range. All cogs are stamped from steel and the larger ones are pinned to alloy spiders. Cogs pinned to lightweight spiders Ultra wide ratio with consistent progression Prime 9 technology Compatible with HG freehub bodies TECH SPECS Cassette Cogs 12 14 16 18 22 28 34 42 50 Color Black Designed for ebike Yes Cassette Body Type Shimano