Will a set of 2001 to 2004 si coilover fit a 2003 lx?

 

Yes, but since the spring rates are different, the ride will be stiffer in the front.

 

The 2001 Civic Si is a 6th Generation Civic coupe, and that generation had entirely different suspension components. So, for the 2002-2006 Civic Si, you'll have to double check as to what the production date was on your car. Some 2003 Civics came with 16mm front hub/crash bolts, and some came with the older 14mm front hub/crash bolts. The change was implemented during that release year.

PS. Any information you need to know is in the FAQ's or the Suspension thread.