USD $‎199.99

Box Three Prime 9 X-Wide Multi Shift Groupset

  • • Prime 9™ Technology
  • • Simple
  • • Durable
  • • Performance
  • • Not Intended for E-Bike Use

  • • Box One Prime 9 Drivetrain Components
  • • Box Two Prime 9 Drivetrain Components
  • • Box Three Prime 9 Drivetrain Components

    MaterialGlass Fiber / Nylon Composite, Steel, Aluminum
    FinishMatte Black
    HardwareHardened Alloy Steel
    Cogs11 • 13 • 16 • 20 • 24 • 30 • 36 • 42 • 50
    Our Box Three tier delivers many of the same capabilities of its more famous siblings yet it's built upon a simpler platform. Cassettes are accessible at 11-50T and fashioned without spiders. The derailleur exploits our Limited Slip clutch technology without the Tri-pack features. Shift easily with a comparable mechanism, although you'll forgo the hinged clamp and die-cast structure. And lastly, string it all together with a Prime 9 chain but without extravagant coatings. If you're looking to bring your 2/3 by bike into the 21st century, then level up with this group!

  • Prime 9 Comparsion Chart

  • Shifter

    Yes. All Prime 9 Twin Lever Shifters come with a stainless steel shift cable.

    To remove it, use a Phillips head screwdriver and turn it counter-clockwise a quarter turn You can then push the cap out by applying pressure to the cable from the other side. Please Note: The Cable Port is not a screw that un-threads from the cable port if you turn the cable port screw more than 90 degrees damage may occur.

    No, traditional 9 speed systems use a Cable Pull that is not compatible with Prime 9.


    No, Shimano direct mount hangers are proprietary and are not compatible with Box derailleurs.

    No, traditional 9 speed systems use a Cable Pull that is not compatible with prime 9.

    No, Box Prime 9 derailleurs are not currently compatible with drop bar shifters, but we do offer a clamp for our shifters to mount on some 31.8mm drop handle bars.

    We suggest removing the derailleur from the bike and using a soft bristle brush or rag with soapy water or a mild degreaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.

    Please see our installation video at


    Others Using Our Products