what size?

What size speakers fit in the front and back of a 2003 civic EX?

more than likely 6.5 up front and 6x9 in back, if they are the same as 6th geners, any 7th gen peeps know for sure?

I am pretty sure you are right but I am getting mixed answers from differant sites on the front. Some say they are 5.25" and some say 6.5". Does anyone know for sure.

If you go to www.crutchfield.com it'll tell you what size speakers fit your car. Some people don't like ordering from them, but I've never had a problem. If nothing else though, it'll tell you what fits and what doesn't.

OK I have been checking out crutchfield and sounddomain and now I am very confused. What I want to get is the infinity reference 6000cs for the front and the infinity kappa 693.5i for the back. Crutchfield says that the front will be fine with an adapter but the infinity 6 x 9's for the back won't fit. Cardomain says that the fronts won't fit but the back is fine. Does anyone have this set up or know if it will work ok. I'm not to worried about the front, I'm sure it will be fine with the adapter, but why would the 6 x 9's not fit if that is what is there now. It will be going in a 03 Civic LX Coupe. Thanks.

they may be too deep for the car. If the speakers are too big they will hit the trunk springs.