You were right, finally they answered me, and after measuring the inner diameter of the Termis, they recommended me the 13s. The thing is that Iíve just bought a set of homologated Termis, and I want to compare them with the Racing version before buying the baffles. They might be here in a couple of weeks. : )
Oh cool ! Glad you heard back from them. Keep us posted- Curious what you end up with!