Originally Posted by
holytrousers
The question is, how did you manage to break a shifter cable ?
It's not unusual. Shimano 11sp is kind of known for shredding them inside the STI lever. I've had that happen in as little as 2,000 miles on a new cable. Granted, I live in an extremely hilly area, so my shifters get a lot of use.
OP: sounds like you should replace them every year or so. Though realistically, you shouldn't have to do the FD cable as often.