Seller notes

This listing is for one brand new Supertech Dual Valve Spring Kit For BMW S14 E30 M3 S14B20 S14B23 S14B25 Includes = 16 Dual Valve Springs (Retainers and Seats Sold Separately) Pressure @ Seat = 78 lbs @35.50mmPressure @ Open = 204 lbs @11mmMax Lift = 14.50mmCoil Bind = 20.70mmRate = 11.50mm Part Number = SPR-H1000D/S14...

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