BMW S14 SCHRICK valve spring kit

Schrick Spring Specs:
Outer Diameter: 30.7mm
Inner Diameter: 16.6mm
Wire Diameter: 3.9mm outer, 3.1mm inner
Maximum Installed Height: 36.0mm
Minimum Operating Height: 23.0mm
Maximum Valve Lift: 13.0mm
Force @ Max Install Height = 309N (31.5kg, 69.5lbf)
Force @ Min. Operating Height = 1130N (115.2kg, 254lbf)