Audi S2 RS2 S4 S6 2.2 2.3 20V AAN ABY 3B 7A FCP racing valve spring and retainer kit

Valve springs data
Installed seat pressure - 38kg
Load - [email protected]
Max. lift - up to 13mm
Made from chrome-silicon steel SAE9254-V 
20 pcs. outer springs
20 pcs. inner springs
20 pcs. titanium retainers
Fits 5 cylinder 20V Audi engines 3B, AAN, ABY, ADU, RR, 7A.
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 strong and light, they help to eliminate valve float. Weight is only 10g.