BOX One Prime 9 X-Wide Rear Derailleur - 1x9-speed

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  • Regular price $180.95
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BOX One Prime 9 X-Wide Rear Derailleur - 1x9-speed

The Box One Prime 9 X-Wide Rear Derailleur takes the advantages of our BOX's 9-speed drive-train but adds the advancements of a modern 1x drivetrains; a fully adjustable Tri-Pack™ Clutch, and an X-Wide cage optimized for the BOX 11-50T cassette. Forged construction steps up the durability and performance to an unparalleled level. Suited for the most demanding terrain. 

Key Features:

  • BOX's 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 and Outer Cage
  • Compatible with Standard Derailleur Hangers (Non Direct-Mount)
  • Prime 9 Technology™


  • Materials: Stainless Steel, Hardened Alloy Steel, Nylon Composite
  • Finish: Hard Onyx
  • Weight: 290g/10.2oz

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