I installed a set of swift springs with KYB struts on my 2001 LS last fall. My car had the original struts ( non sport) and 85k miles at the time. I've never seen an A/B compare, but it seems like th swift springs are probably similar to the tanabe - very small drop and similar to stock in terms of stiffness. I haven't seen many references to people installing Swifts on an LS, but I went with them mainly based on reviews from being installed on other cars. The car corners much better, and is MUCH less boaty. The has more stiffness over bumps for sure, but is still fairly supple. The biggest down side is that small sharp bumps from hitting seams in the road, or potholes are more noticeable. I suppose this is the normal handling vs comfort trade off that needs to be made in any suspension setup. I have noticed the ride getting a little more compliant as the setup is breaking in. I've driven about 1.5k miles since the install. Overall I am happy with the results.
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On my 04' LS430 ML in november 2010 I had some work done. I replaced the oem struts with the KYB's on both front and rear. I replaced all strut mounts with oem, replaced the oem springs with tanabe nf210, replaced the front lower control arm bushings with new ones, the front swaybar links with oem, and replaced the rear stabilizer links with oem. In addition I also had all my rotors replaced with drilled rotors to improve my braking, and new brake pads. Overall, the car handles better in the city, and even better on the expressways and interstates once I'm traveling above 65-to-70mph like a 5series bimmer. However in the city while driving I perfer the oem boatiness...and with a set up like this one its much more sporty. Still a very comfy ride, but because of the performance springs and kyb's its much more sporty. Although I like having less body roll with the new set-up, and my braking is much better than the oem in my opinion. It stops on a dime.
Overally for anyone looking to make the change to a similar setup such as this one; you'll certainly feel the road much more, and the accelaration is more respected. I feel like before when I would cruise 75mph it felt sloppy and numbing for my being the driver. I have my on 17" wheels oem, now it changing lanes I feel more involved with the road. Keep in mind its only the winter time so when the car comes back to 70degree climate it'll feel even better.
Just got done replacing the drives side strut with a KYB 341332 Excel-G shock.
The original strut that came off the car is stamped KYB so I figured there OEM replacement shock should be fine. Wrong, the spring receiver portion of the strut was 90 degrees turned from the stock strut. So that kind of bothered me but I proceeded with the install. Got the drives side done and the passenger was scheduled for the next day. I drove the car to town just to see if I could feel a difference from the drivers side to the passenger (that was still original equip) and it seemed the driver's side was a slight bit more jittery. Then parked 430 in the garage and came back out 10 minutes later and a puddle was forming under the driver's side front! Thought just A/C water dripping off. But no it was the new strut, it blew the oil seal with maybe 30 miles on it. No short cuts for the Lexus, Now I get to uninstall and reinstall what I http://www.clublexus.com/forums/imag.../pat.gifshould have bought the first time around. 04 Lexus LS430
I got my shocks at Tirerack . The concept of replacing shocks sounds very easy and simple but in reality it's not that easy as DIY at home with floor jack or small tools and if it's your first time ever. I would rather pay the shop to do it for safety issue. There are many things can go wrong with any job that requires to jack the car up. Jack can go bad, even with jack stands. I had my friend who is the mechanic to help me out last week with installing after market springs and he still ran into little problem here and there.
First, thanks for the reply's. i had a typo in the shock number it was a 341392, strut unit only. These units are supposedly OEM but they were smaller in the lower portion of the strut then the original ones. I was going to reuse my springs because they only have 80k miles on them. But I will price out the strut assembly, struts at sewel are $180 each. There is a lot less work doing the assembly instead of compressing the springs. So I'm going to call the parts dept at sewel and make sure they are different from the ones I just put on.