This listing is for one brand new set of Supertech Dual Valve Spring Kit for BMW. M50 M52 M54 S50 S52. Includes = 24 Dual Springs Only (Retainers Not Included). The item "Supertech SPR-H1005D/BM Dual Valve Springs for BMW M50 M52 M54 S50 S52 24-Valve" is in sale since Monday, September 30, 2019.This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Camshafts, Lifters & Parts". The seller is "ericsperformancepartscorp" and is located in Pomona, California. This item can be shipped worldwide.