Which 17.5 for Slash?

[fastbaja5b]

Hey guys I am wanting to run a 17.5 motor in my Slash behind a MM Pro ESC

Now I want to be able to run 2s for race and maybe 4s for bashing (geared down of course)

Any ideas what Roar legal 17.5 motors would be capable?

I have a Fantom Ion 17.5 at the moment (rebadged Trinity Duo) but the email I got back from Fantom Racing suggests it's not designed for anything over 2s lipo and would most likely die if I attempted it.

I looked at the Hacker Roar legal motors and emailed the same query to their customer service gurus without response.

Any ideas?