The rear derailleur with Ultra Shift(TM) geometry is designed to give you the certainty of immediate shifting in all conditions.
The oversized outer plate wraps around the upper and lower bodies of the rear derailleur, providing superior stiffness. This translates into the absence of play and the maximum speed of chain movement upward and downward.
FEATURES & BENEFITS
ULTRA-SHIFT(TM) PARALLELOGRAM: designed to wrap around the rear derailleur bodies and increase the overall stiffness of the rear derailleur. Makes shifting fast, precise, and clean in all conditions.
LIGHTENED UPPER BODY: weight reduction
PULLEYS IN SPECIAL RUBBER: friction reduction
SINGLE CAGE VERSION: flexibility of use with all the sprocket combinations