Box Three 9-Speed X-Wide 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.

  • Our Best All-Rounder Derailleur
  • For Light/Medium Terrain
  • Limited Slip Clutch™
  • Bearing Pulleys
Box Three 9-Speed X-Wide Derailleur
Box Three 9-Speed X-Wide Derailleur
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Description Colour Size Wt(g) Part No. Stock Lvl Unit RRP Pack Qty
THREE Prime 9X Rear Mech,  
Limited Availability
Black9sp290GRBX3P9X£84.99Each 
  • 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
THREE Prime 9X Rear Mech,  
Limited Availability
Black9sp290GRBX3P9X£84.99Each 
  • 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