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Spring RatesFront: 11
and give the car a more planted feel when you start pushing it
*Image example is a 575lbs/inch spring rate
these springs improve overall control and make the car feel more composed without sacrificing daily drivability
Lexus IS 250/IS 350 (2006-2013) Sport Springs Stack Guide Spring RatesFront: 11Improve the handling while keeping ride quality with our Swift Sport Springs for the 2006 2013 Lexus IS 250 IS 350. Designed by driving enthusiasts and style minded drivers that demand only the best, you'll not only notice a visual difference in drop height but feel a noticeable improvement. Specifications Part #: 4T040 Spring Rates Front: 5. 4kgf mm Rear: 5. 6kgf mm Lowering Amount Front: 0. 8inch (IS 250) 1. 0inch (IS 350) Rear: 0. 6inch (IS 250) 0.