i was wondering what is the difference between 22mm, 23mm, 24mm, and 25mm? which one is stock itr?

 

22mm I believe.

 

1mm, 1mm, 1mm, 1mm

22mm: USDM Rear
23mm: 98 JDM Rear
24mm: USDM Front
25mm: JDM Front

 

so if i decided to get the jdm itr 25mm then i need to get the 23 mm for the rear? or could i use front jdm and the rear usdm?

 

which setup you think i should use for my del sol the front 25mm and the rear 23mm or the front 24mm and the rear 22mm?

 

Not meaning to hyjack but i was wondering the same, What Sway bars should i use on my EG6? if i want to use it for road racing..

 

Having someone else answer what sway bars YOU should use is like asking a friend to pick out a girlfriend for you...

It's what YOUR driving style prefers. Oversteer, neutral, understeer? Then not to mention the rest of your suspension setup/configuration and then tires selection/size.

There is no "fits all" here.

 

^^^ Agreeing with Dave ^^^

But for a recomendation, it's difficult to wrong with a decently matched set of springs/shocks and the USDM setup of 24F/22R. This works very well if you a want more aggressive setup but still streetable.
But keep in mind that you can get into trouble with it if you enjoy braking hard and turning at the same time on the street. The back will get loose if you push it to hard.

Also keep in mind that with the larger rear bar you NEED reinforcement for the rear subframe. (ASR)

 

i was wondering is there a big difference between the usdm setup and the jdm setup? would you feel the difference?

 

Simple answer, yes. While it's only a 1mm difference it's quite a bit more if looked at in percentages...

 

24F/22R vs 24F/23R is noticable.
Personally I'd never go larger in the front.

 

which one would you recommend i should use for my car?

 

I thought that the JDM fronts were 25mm, because of this link:

http://yhst-1408381693991.stores.yah...indc2tyrf.html