I have a 25ish mm (didn't exactly have a 25mm open end wrench) front sway bar, with extended ends that have moog printed on the zerk fitting boots.
I have a rear sway bar that pegs in at a ridiculously small 15mm. Both sway bars are a simple black color.

Are these stock on the 2003 Civic Si? (obviously the moog ends aren't.)

 

sounds stock....the front is 25.5mm hollow and the rear for the 03 in 15mm solid....I put togather a little chart on another forum on swaybar size...

http://forums.clubep3.net/showthread.php?t=567637

Hope that helps.

 

THAT IS EXACTLY WHAT I WAS LOOKING FOR!!! You rock.

 

ya we know he rocks lol... good job mustclime!

 

Moog is just a chassis parts company. Someone just replaced the stock endlinks most likely cause they went bad. Sounds stock. Buy a Progess sway bar combo and your life will be complete. Totally different car.

 

endlinks I hear are common for seizing on ep3's

 

These have serviceable zerc's (sp) now. And I have a grease gun at work, so I don't think I'll have a problem with these going out.