I notice there are 5 different HFP suspension kits for the 2006+ civic on http://www.collegehillshonda.com

SI coupe
SI sedan
Coupe
Sedan(auto)
Sedan(manual)

I was wondering if all the suspensions were the same fit and just different spring rates for each car, or will there be fitement problems if I buy the wrong one?

 

fitment will be the same... valving and spring rates will all be different..

bottom line:

buy the right one for your car.. closest would be the sedan si

 

Thanks!

 

For some reason the Non SI Sedan(Manual) suspension kit is on sale for 120 dollars cheaper than the rest. What would be the disadvantages if I bought that kit instead over the SI sedan kit for my CSX? The weight difference of the 2 cars is 145 lbs.

 

the weight difference isn't the biggest deal: where the weight is located is a big deal and most of the weight difference is in the front... the springs won't be stiff enough and the strut valving will be off..

buy the kit that is right for your car. (my advice for the 2nd time)

$120 isn't that much to put the correct part on your brand new car... if it was a 15 year old civic.. screw it, use the other suspension if your on a budget... but if you can afford a new car, you shouldn't be a cheap *** when you're buying parts for it

 

Makes sence, just wasn't too sure what the differences would be.