Box Three Prime 9 X-Wide Rear Derailleur

The Box Three Rear Derailleur simplifies the features found on the Prime 9 Box One and Two rear derailleurs making for a fully featured wallet friendly rear derailleur. Including a Limited Slip Clutch, Sealed bearing pulleys and a solid construction Box Three Rear derailleurs are compatible with 11-46 and 11-50t derailleurs making it one of the most versatile derailleur offerings for Prime 9.

FEATURES

  • Our Best All-Rounder Derailleur

  • Limited Slip Clutch™

  • Bearing Pulleys

  • Nylon Composite Knuckle

  • Direct Channel Cable Stay

  • Die Cast Linkages

  • Stamped Inner and Outer Cage

  • Prime 9 Technology™

  • Compatible with Standard Derailleur Hangers (Non Direct-Mount)

​COMPATIBILITY

  • Box One Prime 9 11-50T and also 12-50T eBike Cassette Black

  • Box Two Prime 9 11-50T and also 12-50T eBike Cassette Black

  • Box Three Prime 9 11-50T  and also 12-50T eBike Cassette Black

  • Box One Prime 9 Chain 126L DLC Black

  • Box Two Prime 9 126 Link Chain Nickel

  • Box Three Prime 9 126 Link Chain Polished

  • Box One Prime 9 Shifter Black

  • Box Two Prime 9 Shifter Black

  • Box Three Prime 9 Shifter Black

HOW TO INSTALL