I just purchase some brembo replacement rotors from tirerack for my 05 g35x. Does anyone know if these will fit a non-brembo X?

Here is the link: http://www.tirerack.com/brakes/brake...5&autoModClar=

 

You should be good. These are "replacement" rotors intended to replace your OEM brake rotors. They just happen to be manufactured by Brembo. These particular rotors are not the rotors used on the factory G35 Brembo Brake option.

 

Brembo does make "normal" car rotors. Usually they are the brand I go with. They aren't anything special though but their name kinda implies they are a "super-rotor"

 

So you bought them before you knew they would fit. LOL But yes like everyone said should fit since they are just replacements.