With its horizontal parallelogram design and pulley offset, the XX1 X-Horizon™ Rear Derailleur keeps the chain gap constant across all 11 gears, providing fast, precise shifts.
Features
By limiting all movement to the horizontal axis, this design is faster, reduces shift force and eliminates ghost shifting
Roller Bearing Clutch technology reduces bounce and chain slap
Cage Lock technology makes wheel removal and installation easier than ever before; just push the cage forward to create slack, and lock into place
Paired with the XX1 shifter, the X-Horizon rear derailleur forms the backbone of X-Actuation technology for unbelievably smooth shifting action