Opel / Vauxhall 2.0 Z20LET Z20LEH FCP racing valve spring and retainer kit

Valve springs data
Installed seat pressure - 30kg 
Lift - 100kg@13mm
Max. lift - up to 13mm
Made from chrome-silicone steel SAE9254-V
16 pcs. outer springs
16 pcs. inner springs
16 pcs. titanium retainers
Fits Opel / Vauxhall 4 cylinder 2.0 16V Z20LET Z20LEH engines. 
With this set the risk of valve flutter and a possible engine failure is minimized.
Recommended for engines with series and racing camshafts and over 7600 RPM.
Titanium retainers are very light and strong, helps eliminate valve float. Weight is only 10g.