105 Di2 FD-R7150 Headset The thin profile Aireator features

The thin profile Aireator features an open mesh weave over the foot top

High-torque

resilient polyester fabric with a matte finish

CENTER LOCK

Sensing ambient light

105 Di2 FD-R7150 Headset The thin profile Aireator featuresShimano Di2 electronic shifting lets you change from the big to small chainrings, or vice versa, whenever you like while minimizing the risk of a dropped chain. Similarly, you can perform rear shifts without the need to trim the front derailleur to avoid chain rub. Full and semi synchronized shifting functions can be selected using the E Tube app. With digitally accurate electronic shifts and coordinated communication between shifters and derailleurs,