It seems that all aftermarket springs will lower the car. If you like the stock ride height and your springs aren't damaged, don't change them. Personally, I think the car will be fine a little closer to the ground, and I haven't heard of any problems from those who have done it. Stiffer springs will really help tame that body roll and brake dive.
| Coupe | 90Q | 90Q Sport | |
| H&R Progressive Rate Springs* | 50311 -- 40mm lower | 50311-- 45mm lower | 50311 -- 25mm lower? |
| Eibach ProKit** | 1510.140 -- 25.4mm lower | 1510.140? -- ? lower | |
| Koni Suspension Kit Includes ext. adj. shocks |
1110-2010 -- 30mm lower | 1110-2010 -- ? lower |
* Some people have reported a strange squeaking sound after installing the H&R springs. It is thought that this might be caused by the first few coils touching each other. The solution is a Honda part. (gasp!) It is called a spring isolator, and is a circular molded urethane tube with the approximate radius of a spring coil, slit along the inside. It has drain holes and a contact adhesive on the inside. The Honda P/N is either 3077864 or 52442-SH3-000 depending on what numbering scheme the particular Honda dealer uses. They should be less than $10 a piece (try http://www.hondaparts.com for good deals). Put one on the bottom coil, and a second on the third coil, where the spring slope changes. Even if the squeak is only on one side, you may want to install them on both sides to prevent any lean from different ride heights. (Rick Zehr)
** Beware that the Eibach springs are linear in the front and progressive in the rear. This is opposite from what you might expect, so be sure your installer knows which ones go one which end.
