This listing is for one brand new Supertech Dual Valve Spring Kit For BMW M50 M52 M54 S50 S52 

Included = 24x Dual Valve Springs 

Seat Press = 80 PSI @ 35.70mm 

Open Press = 195 PSI @ 10mm 

Requires = Retainers RET-AU5VE/T1 + Seat Locators SEAT-BM60 (Not Included)

Part Number = SPR-H1000D/BM