the 4's ride better than oem sport suspension. However for track or really aggressive mountain/canyon running they were not my favorite. I ended up going to JRZ from them to get a better track oriented setup (HKS vs. JRZ isn't a fair comparison so don't read into that)
The one thing i didn't like is even running the HKS on the stiffest setting the car was very bouncy on bad roads. Ended up beating my exhaust on the ground quite a bit.
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2010 Monterey Blue 370Z
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