These are coilovers from an Indy race program. I have about 100 springs.
H&R Coilover Springs VA 25-35/HA 0-15mm BMW 3 Series G81 M3 Touring xDrive (Type G234M)
Coilover Springs 18K / 1008lb rate 180mm / 7" Length 65mm / 2.5" ID (pair)
Coilover Springs 7.2K / 400lb rate 180mm / 7" Length 65mm / 2.5" ID (pair)
KW Coilover Springs Mercedes C-Class Rear Wheel Drive (W205) 125-270kW
KW Coilover Springs Dodge Charger Rear Wheel Drive (from Model 11) 8 Cyl., 351kW
KW Coilover Springs BMW 4 Series G83 M4 Convertible (G234M, from 21) 353-390kW