Mazda RX7 and RX8 Suspension, Intakes, Headers, Exhaust, Shocks, Springs, Sway Bars, Brake Kits, Autocross and track mods.
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Noticed that you are carrying the PSS9's now. There is a thread on the RX8club forum with regards to them, the actual spring rate seems to be a point of confusion, several people have received vastly different information on the spring rates from Bilstein people themselves. One with the rates that you have listed and one in a much lighter rate, closer to that of the PSS10's. Just thought I would mention it.