Box One Prime 9 Rear Derailleur

The Box One Prime 9 Rear Derailleur takes the advantages of our legacy 9-speed drive-train but adds the advancements of a modern 1 by; a fully adjustable Tri-Pack™ Clutch, and an x-wide cage optimized for an 11-50T cassette. Forged construction steps up the durability and performance to an unparalleled level. Suited for the most demanding terrain. 

FEATURES

  • Our Best Performing Derailleur

  • For Aggressive Terrain

  • Adjustable Tri-Pack™ Limited Slip Clutch

  • Precision Sealed Bearing Pulleys

  • Carbon-Nylon Composite Knuckle

  • Pivot-Tech™ Cable Stay

  • Durable 3D Forged Linkages

  • Forged Inner Cage Prime 9 Technology™

  • Forged 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