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Box One 11-Speed Long Rear Derailleur

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BrandBox Components
Box One 11-Speed Long Rear Derailleur

Tri-pack Clutch

Fine tune input at the shifter and set chain tension accordingly with Tri-Pack Clutch technology. This advanced chain retention system provides instant engagement and long-lasting chain dampening through the use of a one-way roller bearing and composite friction plates. Housed in the lower knuckle, TriPack is both user-friendly and easy to maintain, allowing riders to adjust clutch force* with a simple Torx -equipped multi-tool.

Forged Construction

Impact resistance is greatly improved by way of forging - a key manufacturing process that strengthens critical components. Tested at the premier freeride event of the season -- Red Bull Rampage-- this new construction has proven itself capable of performing at the highest levels and comes standard on all second-generation Box derailleurs.


Impact resistant, spring-loaded cable stay keeps cable, housing & you out of harm's way.


  • Speed: 11-Speed
  • Material: Aluminium
  • Weight: 288g