Just looking for advice before I go ahead with purchases. I've got a Cervelo P2 Di2 with SW-R671 on the tri bars into a 3 port junction box and external battery setup. I am looking to upgrade to add additional shifters at the brakes - R8060 TT.
To upgrade will I just need the following?
5 port junction box SM-EW90
2x di2 cables to the shifters
Is that correct? Thanks in advance