I've had K Sport springs installed for about 4k miles. It's mainly the rear springs I have an issue with, I never go over speed bumps fast, but if I go just a little quick over the bump the rear springs sound like they are bottoming out. I cut the bumpstops like I thought I was suppose to. Basically i'm worried about damaging my car. I really have no idea how strong the frames are, like if the springs are bottoming out then that more abuse going to the frame that the springs are not absorbing. I;m thinking about going back to stock, but I would be wasting more money on buying new bumpstops and realigning. Also, my rear end is lower than the front. Looks kinda crappy, but not too noticeable.

and just a quick question, the suspension is crazy simple in the rear. How does it compare to the indipendant suspension like on Civics and Foci?

 

hey i got this same problem with my progressive lowering springs. and it's in the rear of the car too. i can't really help you out but i was thinking about just replacing the rear springs with the stock ones and keeping the fronts the way they are. do you live in a cold place or have you just replaced your tires cause right when i got new tires i started to hear it too. ryan

 

if it didn't say to cut the bumpstops then you shouldn't have...there's a sticky on here about this.

 

i forget how much bumpstops are on the others, but i no progress springs front and back are half inch cut off on the bumpstops.

 

My eibachs had detailed instructions and pictures on how much bumpstop to cut out. I followed it.

 

how many total miles on your car.. may be new shocks/struts time

 

I have progress springs and have never bottomed the rears in 10k+ miles now...and I go over speedbumps at work every day. Bad install or maybe it's something else bottoming out somewhere...exhaust tip?

 

My bumpstops are completely gone... i took them out. No problems 10k+ miles with sportlines on. However, even with bumpstops cut ~half off, you shouldn't have problems... are you sure you are bottoming out, and that it's not your stock struts getting pounded?

 

hmmmm.... i have ksports as well... i cut the stops out during install too...ride seems rougher than stock, but i supose thats the sacrifice for stiffer springs.

 

yea my eibachs said to cut them but it was optional in the rear... i am going to go and get new bump stops to replace the ones i cut cause i do the same thing

 

i have the same problem, knocking in the rear. my mechanic that i go and see to do all the work on my car told me that it is the shocks. it is because the shocks have a certain distance they travel and get stiffer as they move down when the car is at stock height, but by reducing the cars height you just lowered the car and the shock now has less travel and it is bottoming out before it can absorb the impact. you need to measure the wheel travel with the lowered springs and get a shock accordingly. i am going to get this done soon. ill try and post my results after i get it done

 

please do

 

only option for shocks and struts for regular springs are konis.. very nice shock and springs