6.5" for both front and rear.
The standard size for speakers in a 2004 Honda Civic is 6.5 inches. The components have enough room where they are mounted to be upgraded into larger louder units.
6.5"
Front door and rear panel speakers are both 6 1/2" PDE
6x9
The stock front speaker size on a 2002 Honda Civic is 6.5 inches. These speakers are located inside the door panels of the vehicles.
Oh, dude, you're asking about the stock door speaker size on a 2000 Honda Civic LX? Well, like, technically speaking, the front door speakers are 6.5 inches, and the rear speakers are 6x9 inches. But hey, as long as it makes noise, who really cares about the size, right?
Front: 5-1/4" Rear: 6" x 9"
The 2013 Honda Civic has 34.3 in. of rear head room.
The 2010 Honda Civic has 30.3 in. of rear leg room.
The 2012 Honda Civic has 49.0 in. of rear hip room.
The 2002 Honda Civic has 36 in. of rear leg room.