Makai Kadou is definitely a SIC-like imagining of the costumes, but they are two different lines. Bandai has them listed as such and like Blade Raider said the SIC logo isn't on them.

Are there plans, does anyone know, to ever do SiC Fourze? Because it seems idiotic they skipped him. That suit, those modules, were made for SiC. I mean they made a damn SiC Shin and the friggin' thing looks exactly like Figuarts Shin!

I really want to see this too, but it's hard to say when and if we'll ever get SIC Fourze. Sure his show was more fun for the young ones but he has some niffy suit designs BEGGING for the SIC treatment.

I think he'd look amazing. Craft the suit to look more mechanical, more spacesuitesque.

I like where this is going. Don't get me wrong Wizard's SICs were neat looking but it sucks that such a bland, safe show got SICs before Fourze.

But hey, you never know with Bandai. Prototypes for said high school Rider's SIC form could pop up someday.

It'll happen eventually. Bandai did the same thing with Kabuto, but he finally got his figure about 5 years or so after the show ended.

I don't think Bandai appreciates how intensely impatient I am.

SIC is a line targeted at the adult collectors and the adult fanbase in Japan wasn't that big on Fourze.

Last time Gojima (the guy works with Andou) said on S.I.C. BBS that Fourze for now is not financially possible due to the attachment gimmicks.
However if sales for Kamen Rider Birth (mainly the CLAWs' part) goes well there might be a slight chance for a reconsideration.

Oh Kamen Rider Birth and Prototype Birth will be 2 different sets (as mentioned on twitter by Gojima).
Also a 20 years after version Birth kit coming up later.

It wasn't big on a lot of series, didn't stop SICs being made.

It's only marginally dumber to skip Fourze than it was to skip Accel.