firelikeiy

Hi. I have a IS 250 and one of my lower compression bushings is starting to fail. I was looking at ordering a new set, however, I noticed that they come in a -20,0 and 20 offset. I am assuming they come from the factory with a 0 but wanted to see if anyone can verify?

Also, does the IS-f use the same bushing as the IS250 or is it stiffer?

Gville350

iTrader: (10)

Not following what component houses said "Lower Compression Bushing", please explain.

firelikeiy

Front suspension lower control arm compression bushing. Here's a pic: https://www.clublexus.com/forums/att...racket-10-.jpg

Part 48075 and 48076: http://www.lexussouthatlantaparts.co...driveLine=8058

BuLLdAwG

http://www.rr-racing.com/Lexus-Lower...isfxlca001.htm

Are you looking for this result?

firelikeiy

95a... I'm not looking for anything that stiff. The car is my DD. I drive roughly 80 miles back and forth to work. I figured if the IS-f was a little stiffer than what the 250 has then I would go for it. My main question however is what offset I need.

scott1256c

These are the parts Jeff Lange used. You can read the last 2 or 3 pages in the FIGS LCA bushing thread to find what he is talking about. As I recall, they should be stiffer than stock, but not as stiff as poly bushings. Given that he states they are for 0 caster, I am ASSUMING that is what the numbers are that you are talking about for offset. You could also PM him to find out more.

Jeff Lange

iTrader: (1)

Factory is 0 offset, you can adjust +/- 20' (0.33 degrees) if you need to adjust the caster. The ISx50, IS F and RC F all use different bushings of varying stiffness. I believe the RC F to be the stiffest but don't have exact hardness numbers.

Jeff

firelikeiy

Thanks for the replies everyone. I ended up getting the RC F bushings. $104 shipped for the pair from mylparts.

RRRacing

iTrader: (1)

Hi All, we recently introduced the Ultimate Steering Response System (aka "USRS") and we are getting tremendous reviews on the ISF forums, I invite everyone to check out the huge feedback we are getting.

We are not just selling bushing, its is a bushing/housing system that completely changes the LCA bushing design to a thrust loaded setup that is superior in every way to the stock setup. Improvement in steering feel, feedback, braking, and reduced tire wear is big.

We have already competed several RCF installs and the improvement is huge. The more grip you have, and the more aggressively you drive, the bigger the gains.

BuLLdAwG

Did you get these installed?

I would appreciate your feedback if so.

Thanks.

firelikeiy

No, not yet. I just received them last week as they were backordered. I should have them installed in a week or two when I get the time. I'll report back when I do.

RRRacing

iTrader: (1)

Would you install these already!:-)

here are some reviews from the ISF forum:

https://www.clublexus.com/forums/is-...rr-racing.html

BuLLdAwG

Bump. Hoping OP has some feedback. I too want new, but not sure I want 95a stiffness.

RRRacing

iTrader: (1)

Hi... please read the reviews of our USRS... we have sold a ton of these, and to the best of my knowledge there are no complaints regarding stiffness.

Rafi