Box One 9-Speed X-Wide 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 optimised for an 11-50T cassette. Forged construction steps up the durability and performance to an unparalleled level. Suited for the most demanding terrain.

  • Our Best Performing Derailleur
  • For Aggressive Terrain
  • Adjustable Tri-Pack™ Limited Slip Clutch
  • Precision Sealed Bearing Pulleys
  • Pivot-Tech™ Cable Stay
Box One 9-Speed X-Wide Derailleur
Box One 9-Speed X-Wide Derailleur
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Description Colour Size Wt(g) Part No. Stock Lvl Unit RRP Pack Qty
ONE Prime 9X Rear Mech,  Black9sp290GRBX1P9X£164.99Each 
  • Good stock levels
  • Low stock levels, Qtys may not be available
  • +24h Components are available, add 24/48hrs for assembly
  • Special Order Currently non-stock item, contact us for info
  • Out of stock. Expected availability date will be displayed if known.
  • Discontinued. This product is no longer available.
  • M Mixed Quantity discount available
Description Colour Size Wt(g) Part No. Stock Lvl Unit RRP Pack Qty
ONE Prime 9X Rear Mech,  Black9sp290GRBX1P9X£164.99Each 
  • Good stock levels
  • Low stock levels, Qtys may not be available
  • +24h Components are available, add 24/48hrs for assembly
  • Special Order Currently non-stock item, contact us for info
  • Out of stock. Expected availability date will be displayed if known.
  • Discontinued. This product is no longer available.
  • M Mixed Quantity discount available