Shimano GRX RD-RX717 Wireless Di2 12 Speed Rear Derailleur D4 5-in-1 design

5-in-1 design

where the delivery of a steady stream of rapidly digestible energy is typically a priority but where it's still important to replace a proportion of your sweat losses

mirroring the Prizm™ lens colors seen in Oakley eyewear

Beyond that

Shimano GRX RD-RX717 Wireless Di2 12 Speed Rear Derailleur D4 5-in-1 designThe Shimano GRX RD RX717 Wireless Di2 Rear Derailleur is designed to give gravel riders the durability and gear range to pursue any off road exploration that tickles their fancy. This derailleurs wedge shaped body is filled with a low profile Shadow ES stabiliser that produces excellent chain retention and reduced chain slap over rough terrain, and the lower profile construction produces excellent clearance over trail obstacles. Because it is