BOX One 11 Speed Rear Derailleur (Wide Cage): Hard Onyx


139.95 $ 174.99

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Adjustable Tri-Pack Limited Slip Clutch

The Adjustable Tri-Pack limited slip clutch is an innovative chain damper that vastly reduces derailleur cage bounce and chain slap. The system also maintains tension for better chain wrap.

At its core is a clutch pack, that is capable of providing a large amount of force in a small package. Clutch force can be adjusted giving the ability to tune setup to the desired balance of shifter feel and chain retention.

Durable 3D Forged Linkages

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 level.


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

  • Impact resistance is greatly improved by way of 3D forged construction
  • The Tri-Pack limited slip clutch is an advanced chain retention system that provides instant engagement and long-lasting chain dampening through the use of a one-way roller bearing and composite friction plates
  • Impact resistant, Pivot-Tech spring loaded cable stay keeps the cable, housing, and you out of harms way
  • Precision sealed bearing pulleys
  • Wide cage fits up to 46T cassette cog, X-wide fits up to 50T


Speeds 11 Speed
Materials 6061-T6 Aluminum, Carbon fiber/Nylon Composite
Shifter Compatibility Box One or Box Two 11S
Pulleys Precision Sealed Bearing
Minimum Cog 10 teeth
Maximum Cog 46 teeth
Color/Finish Hard Onyx
Inner & Outer Cage Forged
Weight 288 grams / 10.2 ounces
Technology Adjustable Tri-Pack Limited Slip Clutch, 3D Forged Linkages, Pivot Tech