BOX Two Prime 9 X-Wide Single Shift eBike Groupset - Includes X-Wide Rear Derailleur, 11-50t Cassette, Single Shift


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  • The BOX Two Prime 9 Groupset delivers exceptional 9-speed performance, but in a simpler and more cost-effective package than BOX One. This kit includes a rear derailleur with a Tri-Pack Clutch, an 11-50 tooth cassette, shifter with snappy action, and a durable 9-speed chain.
    • Single shift option is recommended for eBike use
    • BOX's most durable drivetrain
    • Prime 9 rear derailleur features a Tri-Pack clutch (non-adjustable)
    • Derailleur is compatible with standard derailleur hangers (non-direct mount)
    • Cassette is compatible with HG freehub bodies
    • Compatible with most 10,11, and 12-speed wide/narrow chainrings
    Item Specifications
    Cassette Cogs 11-13-15-18-22-28-34-42-50
    BOX Two Prime 9 Groupset Kit-In-A-Box Mtn Group UPC: 639266097303
  • United States Shipping:

    Everything in the entire store ships for free to the USA for orders over $45, it's that simple, no catch. The free service will likely be FedEx depending on the size of the package. Please see our USA Shipping Options page for more info. Everything ships pretty darn fast since we have a shop/shipment center on the West and East Coast.

    International Shipping:

    International shipping is available on 99% of our products. Shipping cost can be calculated on the cart page or during checkout. We are experts at international shipping so please buy with confidence. We have great prices on Usps Priority & Express services, all services will include a tracking number. Please see our International Shipping Options page for more info.

    In-Store Pickup:

    If you would like to pick up your online order in store simply select the Store Pickup option during checkout (this is free of course). We will contact you once your order is ready for pick up.


    We offer a 45 day return period on all new items. We want our customers to be happy and returns to be easy. Please see our Return Policy FAQ's page for more info.


    Worldwide Cyclery is an authorized dealer for all the products we sell. This means we are able & will honor all manufacturer warranty policies. For more information per brand please see our detailed FAQ article about the warranty process here.

Sku: KT4516


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