IS F (2008-2014) Discussion topics related to the IS F model

Swift Spring pics & thickness vs. stock

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Old 07-17-12, 11:17 AM
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NYC ES3
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To answer a much earlier question...
Yes Swift Spring with stock Tokico shocks...
Drop 1" front , .6" Rear


Nice even stance - im pleased with it.

And yes I agree with the above---its all a harmony thing....just slappin on aftermarket parts expecting improvements in performance is not always the case.
In my case I wanted a more even stance with the car and not slamming it to the ground (no offense just not my thing)

Last edited by NYC ES3; 07-17-12 at 11:42 AM.
Old 07-17-12, 12:26 PM
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VtotheJ
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You said performance from the stock springs are better... what do you mean? Is there more body roll or does the car feel unstable with the Swift springs?
Old 07-17-12, 03:06 PM
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Originally Posted by VtotheJ
You said performance from the stock springs are better... what do you mean? Is there more body roll or does the car feel unstable with the Swift springs?
Its stable and its not a night and day difference...I just feel a difference
so if the F stock is a 10 these are like a 9 to me
but I'm not tracking the car...just spirited driving...so its fine for me

its not a "loss of performance" .
Old 07-17-12, 04:32 PM
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MWhit02
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Originally Posted by 1SexyLexus
Dang thats what I was affraid of and didnt want to scrafice the ride quality just to lower the car and give it a better stance...
I'm saying if you have a 2012 IS F and you want it lower, just install the front swift springs, since your rear springs are firmer than my '09 was. This is exactly what I have done to my '09.
Old 07-17-12, 06:35 PM
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aWorkOfArt
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Originally Posted by MWhit02
I'm saying if you have a 2012 IS F and you want it lower, just install the front swift springs, since your rear springs are firmer than my '09 was. This is exactly what I have done to my '09.
Cool! So I guess the next question is, where is everyone getting these from and who offers the best deal?
Old 07-17-12, 08:39 PM
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VtotheJ
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Originally Posted by 1SexyLexus
Cool! So I guess the next question is, where is everyone getting these from and who offers the best deal?
VIP Auto Salon has them. Just for kicks I added it to my cart and calculated shipping, $334 shipped. To Guam I'm not sure, LOL.

Not a bad price... but I didn't take the plunge since I would like to go for a ride in an ISF w/ Swift Springs before making my decision. NYCES3 we need to meet up...
Old 07-17-12, 09:30 PM
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Originally Posted by VtotheJ
VIP Auto Salon has them. Just for kicks I added it to my cart and calculated shipping, $334 shipped. To Guam I'm not sure, LOL.

Not a bad price... but I didn't take the plunge since I would like to go for a ride in an ISF w/ Swift Springs before making my decision. NYCES3 we need to meet up...
Thanks for checking bro! Im gonna have to send a PM and see what they say
Old 07-17-12, 10:49 PM
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eoph
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Has anyone tracked their car and can provide laptimes of before and after? And also with the f sport rear sway bar?
Old 07-18-12, 06:49 AM
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A was looking at the swift springs also just for the front, but my 08 is just feels so stiff. So I just got the KW's.
Old 07-19-12, 05:16 PM
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streetx
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Originally Posted by lobuxracer
They are dual rate springs not progressive, and the diameter of the rod they used is a lot smaller than the OEM spring which makes it softer if all things are equal, but they're not because it's a dual rate spring. The Swift spring is also a LOT longer in terms of the number of coils (it's really important to think of a spring as a torsion bar coiled up for convenient packaging) which also means it will be softer if all things are equal, but again, they're not equal because of the dual rate wind.

The only way to know for sure what's going on is to put the springs on a spring tester and see how they respond, or ask Swift for the rates.
Originally Posted by lobuxracer
This is why they call it chassis tuning...just bolting on parts is very foolish. Everything has to work together or its a disaster no matter who made the components.
all of this
Old 07-20-12, 02:54 PM
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Just changing the front springs - I heard of people doing this...for those that have
especially with the swift springs

does it feel different? or off balance or...whatever?
Old 10-04-17, 05:29 PM
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MileHIFcar
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Originally Posted by lobuxracer
They are dual rate springs not progressive, and the diameter of the rod they used is a lot smaller than the OEM spring which makes it softer if all things are equal, but they're not because it's a dual rate spring. The Swift spring is also a LOT longer in terms of the number of coils (it's really important to think of a spring as a torsion bar coiled up for convenient packaging) which also means it will be softer if all things are equal, but again, they're not equal because of the dual rate wind.

The only way to know for sure what's going on is to put the springs on a spring tester and see how they respond, or ask Swift for the rates.
Bringing this post back from the dead..

Following up on what Lance said above, does anybody know the spring rates of the stock springs that were paired with the stock Tokico shocks 08-10 by chance? I searched buy didn't find anything?

All I got were the spring rates of the swifts @ 9kg front and 8kg rear.

Thx
Old 05-03-20, 09:52 PM
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Delayed response follow up....I took these off n went back to stock... they can’t hack the weight in the front like the stocks. That thicker stock rod “pause” makes a difference.... got sick of the way it rode and n slight bounce.
traded better look for better performance.
long live the oem spring.
for me at least.
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Old 05-04-20, 07:53 AM
  #29  
Jwconeil
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My 13 came with swifts. I immediately went back to oem springs. It doesn’t look as good, but rides and handles better.
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Old 05-06-20, 09:00 PM
  #30  
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Originally Posted by Jwconeil
My 13 came with swifts. I immediately went back to oem springs. It doesn’t look as good, but rides and handles better.
+1 on that.

the look is hot but the ride...nah
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