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BOX Four 8-Speed Wide Single Shift eBike Groupset - Includes Wide Rear Derailleur, 11-42t Cassette, Single Shift Shifter, 8-Speed Chain

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The BOX Four tier is the perfect choice for riders who just want less fuss! You're fond of Prime 9, but know 8 is enough, and surely 11-42T is plenty of range for an 8-speed cassette. The derailleur still has the Limited Slip clutch and now arrives with a more compact cage. The 8-speed chain is built for abuse, although it's sophisticated enough to have its own wide/narrow chainring. Push through fewer gears with a no-nonsense shifter.
Engineered with BOX's "8 is Enough" drivetrain philosophy
8-speed 11-42 tooth cassette is compatible with HG freehub bodies
Rear derailleur with Limited Slip clutch is compatible with standard derailleur hangers (non-direct mount)
8-speed chain is compatible with wide/narrow chainrings