Ok I search but only found a buch of FS threads. I just purchased a 01 ITR rear Sway bar.
My 1st question is what is the size of it, and how much of a difference will it make when I put it on my em1?

 

You bought a sway bar but dont know what size it is?

US rear ITR sway is 22mm and I think Si is 13mm? At any rate the car will have less propensity to understeer.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jetydosa &raquo;</TD></TR><TR><TD CLASS="quote">You bought a sway bar but dont know what size it is?

US rear ITR sway is 22mm and I think Si is 13mm? At any rate the car will have less propensity to understeer.
</TD></TR></TABLE>

I knew it was either 22,23,or 24mm. Also, I wont need get any reinforcement on the subframe will I?

 

You will DEFINTELY need to get some sort of subframe reinforcement on non-ITR application, Beaks kit etc.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jetydosa &raquo;</TD></TR><TR><TD CLASS="quote">You will DEFINTELY need to get some sort of subframe reinforcement on non-ITR application, Beaks kit etc.</TD></TR></TABLE>
I don't really recommend the Beaks' kit on Civics. It's better off getting the ASR reinforcement brace for Civics

 

Whatever you get you NEED a re-enforcement kit!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by walker111 &raquo;</TD></TR><TR><TD CLASS="quote">Whatever you get you NEED a re-enforcement kit!!</TD></TR></TABLE>

Definitely, unless you want more problems.

I had a 22mm Sway on my old 00' Civic Si when I owned it. Difference is night and day (you will love it) but re-enforcement is a must

 

my buddy had the beaks kit... needless to say after 6 months... his sub frame has a 3.5 inch crack in it.... to beaks kit on civics