For Sale] BC Racing BR Type Coilovers w/Swift springs. OEM spec 10/8k spring rates. Used for about a year and a half. They are the most comfortable coilovers you can buy for
H&R Lowering Springs to fit Audi A4 Avant/SW Type B8 (8K), 2WD+4WD, from 1.101kg FA load, with ABE* incl. DRC (from Apr 2008 onwards) (29061-2) | Carnoisseur
Infite springs with force constant k,2k,4k,8k,... respectively are connected in series to which mass 'm' is attached. The frequency of small oscillations is:
8K Spring Wallpapers - Top Free 8K Spring Backgrounds - WallpaperAccess