Humm. Doesn’t ring as a true answer, especially given that at least one swap out between a 1.0 and 2.0 has been done successfully. I suspect there is more going on here than “it won’t fit.” The future scock in any version has never been available as an aftermarket Option for purchase — only as a replacement part that must be ordered by an authorized dealer. And the 2.0 is only available on a few top end bike models. Sounds more like a marketing ploy than an engineering problem.
Just one guys opinion. Don’t get me wrong. I have a 2016 Specialized Roubaix that has been a tremendous bike. In fact, the move to the future shock has make it a classic before its time. But, I have been very disappointed in the development and deployment of the newer future shock equipped bikes. This thread only reinforces that dismay.
sorry it didn’t work out for you.