In line 25.4mm seatpost Di2 Compatible

[Karaokebaboon]

Becoming exasperated at the lack of choice.! I need an in-line seatpost, Di2 compatible at 25.4mm for (my 2016 Supersix Evo Hi mod frame). Cannondale suggested Thomson Elite but the interior of the seat post makes it impossible to fit. Does another one exist? I have looked everywhere and can't find one. Ideally would like something that is lightweight. Don't care what it costs!

 

[Yellow Saddle]

Becoming exasperated at the lack of choice.! I need an in-line seatpost, Di2 compatible at 25.4mm for (my 2016 Supersix Evo Hi mod frame). Cannondale suggested Thomson Elite but the interior of the seat post makes it impossible to fit. Does another one exist? I have looked everywhere and can't find one. Ideally would like something that is lightweight. Don't care what it costs!

What is an in-line seatpost?
Is 25.4mm the OD of the seatpost?

 

[vickster]

Presumably a straight one with no layback?

 

[Karaokebaboon]

Presumably a straight one with no layback?

Straight one with no layback. Yes 25.4 is outer diameter of seatpost. Standard for Cannondale.