You can find all the replacement parts and accessories you need for your Specialized bike at Escapa.
The Specialized Di2 Battery Mounting Kit for 27.2mm Seatposts is used to mount the Shimano Di2 shifting battery inside the seatpost.
Compatible with the following models:
2016 Ruby
2016 Roubaix SL4 Comp Disc
2014 Tarmac SL4 Comp Frameset
2015 Roubaix SL4 Disc Tiagra
2015 S-Works Roubaix SL4 Disc Di2
2017 Tarmac Sport
