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.
The stock front door speaker size for a 2000 Honda Civic LX is 6 1/2 inches. The rear deck speakers are 6 by 9 inches.
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.