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Available for: IS300/250/350/F

Swift made Sport Springs keeps your quality ride you get from showroom, and adds a sporty feel and lower ride height for sport driving enthusiasts and style minded drivers who demand only the best.
Swift did not start developing Sport Springs by trying to drop the ride height. Unlike others who only care about style, Swift approached to create lowering springs with 3 rules.

1 Keep or improve a smooth comfortable ride.
2 Increase handling, control, and performance.
3 Lower the vehicle within the each vehicle’s usable stroke.

Sample Picture:
 

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will these work on stock struts for an iS300?
whats the height difference and spring rates on these?
 

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for the IS250/350
F258/R291 LBS/INCH

DROP .8/.6 FOR THE 250
.1/.8 FOR THE 350
I'm sorry I wasn't clear.....specs for the 1st gen IS please. Thanks! :)
 

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Better late than never? These are great springs, ride is pretty close to stock. (Linear coil, more usable stroke, less coil bind)

However, the drop is more than they advertise IMO. This is Swift on stock struts (the black one):
 
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