USD $‎62.99

Box Four 8 Speed Wide Rear Derailleur Black

Out of Stock

  • • Our 8 is Enough Derailleur
  • • Limited Slip Clutch™
  • • Bearing Pulleys
  • • Nylon Composite Knuckle
  • • Direct Channel Cable Stay
  • • Die-Cast Linkages
  • • Stamped Inner and Outer Cage
  • • Compatible with Standard Derailleur Hangers (Non Direct-Mount)
  • • Prime 9™ Drivetrain Compatibility Manual

    MaterialAluminum, Glass Fiber / Nylon Composite, Steel
    FinishMatte Black
    SKU: BX-DR4-08AWC-BK
    The Box Four Rear Derailleur is the base of Prime 9 Technology that offers an affordable clutch based 1 by 8-speed derailleur that is simple and light; this makes it a perfect candidate for every entry-level bike that traditionally has a 3 by drive-train that is neither durable nor user friendly.

  • • Box Four 8 Speed Shifter Black
  • • Box Four 8 Speed 116 Link Chain Natural
  • • Box Four 8 Speed 11-42T Cassette Black
  • • Box Four 8 speed Wide/Narrow Chainring 104BCD 32T Black
  • No, Shimano direct mount hangers are proprietary and are not compatible with Box derailleurs.

    No, traditional 8 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 de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.

    Please see our installation video at

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