Robust Design: A wide link structure, skid-plate design, durable aluminum plate and solid pulley add robustness and longevity
RD Protection Function: The new Automatic Impact Recovery function instantly returns the derailleur to its original position after impact
SHIMANO SHADOW ES: A slimmer, stronger evolution of SHIMANO's pioneering chain-stabilizing SHADOW RD+ Concept
Precise and Clean Wireless Shifting: Pinpoint, ultra-fast shifting, and a no-sacrifice 500% gear range
Protected Battery: Tucked safely inside an enclosed space, the battery won't budge even in rough terrain, while remaining easily removable for charging
Covered Pulleys/Cage: The solid pulley and shielded pulley teeth prevent trail debris from jamming up your flow