BMW 4.4 V8 S63 Racing conical spring and retainer kit

BMW 4.4 V8 S63 Racing conical spring and retainer kit

Part number: FCPVSTRBS63/32

Conical valve spring and titanium retainer kit

BMW M5 (F10, F90), X5M (E70, E85) X6M (E71, F86) - 4.4 V8 (S63B44)

Valve springs data

Made from chrome-silicon steel SAE9254-V

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 7500 RPM.

Kit includes:

24 pcs. conical valve springs

24 pcs. titanium retainers