jamisteven

Hey All - seems the Koni Sport Kit is no longer made for the IS350 with the Eibach springs, only the H&R's, however I can still find the kit for the IS250 with Eibach's. I dont want the H&R's as it lowers the car a bit too low for my taste and the stiffness a bit too sporty and even if they still made the 350/Eibach kit, it doesnt lower the front of the car as much as does with the 250 kit, which is bizarre.
My question is, I dont see any reason why the IS250 Kit wont work on the IS350, they are the same weight, similar suspension etc. Anyone running this kit on their is350? Have seen multiple threads online asking this but no definitive answer. Thanks in advance.

bbaugher47

I have H&Rs and they ride well and I don’t really scrape much . Only on steep entry points. A good set of coilovers will ride well and you can adjust them to suit your taste. Race consultung agency has the koni kit for a great price if you decided to go that route.

jamisteven

Yea our roads are crap in Nashville though which is why I want the Eibach's. I have seen what the H&R's look like and its lower than an f-sport, which is too low for me in this city. The stiffness as well is another no-go, so many potholes and stiffer springs makes driving over them that much worse, if I still lived on the west coast ide go H&R all day, as thats what I always had on my Audi's and VW's and they were great.

jamisteven

Response from Koni, which I dont believe is correct:
"Unfortunately, the kit will not work properly with the IS 350 as the Eibach springs are designed specifically for the IS250. According to their application guide Eibach does not manufacture a spring kit specifically for the IS350."

2grfan

Everything I've read is that the suspension will fit. Could it be they designed it for the lighter front end of the 250? You could try a spacer up front to raise it a bit. Or just use Koni's and different springs.

I'm in a similar boat, I was heavily debating those since I'm such a huge Koni fan, but I keep going back and forth. Not sure I want to mod this car because I don't know how long I'll keep it.