Cant comment much on the 2019 as we did not have them but the dug out section has been modified which reflects in the overall volume.
I was after top performance product and these deliver straight out of the box. 2nd day on FMX today and 1st day on the 138 and it does it all.
Construction and finish are outstanding and all the details are available on their website:
www.fmxracing.com/#technologyThe small important details are there with 4 screws per footstraps, no more twisting straps that can change your foot position overtime.
Compared to the Exocet that I have been using for some time and have delivered top results and speeds, these ride a lot higher (feels like you are foiling on a normal fin!) and acceleration is key. The Exocet feels more like a Freerace/Slalom compared to these that are pure 100% octane/racing pedigree.
gpsteamchallenge.com.au/sailor_session/