Dramatically improves shifting performance on any extended range Shimano 1X11 drivetrains over 47T. 


SHARK Cage Design

The key feature of the OneUp Shark cage is that we’ve moved the upper pulley wheel rearward of the cage pivot to optimize the derailleur for larger sprockets. Now as the derailleur moves into larger sprockets the top pulley wheel automatically moves away to adjust the chain gap, no longer relying on just B-Screw.

SHARK Cage Benefits

  • Shark Cage is compatible with M9000/M8000M7000 GS and SGS derailleurs and offers 50% more pulley offset than stock
  • Requires Stock B-Screw adjustment
  • Improves chain wrap and extends cassette life
  • Installs in under 15 minutes – checkout the install video for full details



Material: 7075-T6 Aluminum

Weight: RD upgrade 9g 

Colour: Grey

Compatibility: M9000/M8000M7000 GS and SGS derailleurs



Checkout the install video for full details on Shark Cage installation.


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