Double Valve Spring Kit

The Piper Cams VDSFECO20K is a double valve spring kit specifically engineered for the Ford Ecoboost 2.0L engine, commonly found in the Focus ST MK3 (ST250). This comprehensive kit includes essential components such as spring caps, oil seals, and spring seats to ensure proper function and longevity. With a spring rate of 52 N/mm (297 lbf) and a seat pressure of 45 lbf (20 kg), these double valve springs are built to handle increased performance demands. Key dimensions include a fitted length of 38 mm, nominal internal and external diameters of 15.5 mm and 28.5 mm respectively, and a crush height of 22.27 mm. It is critical to note that stock OE springs are insufficient for the demands of performance camshafts like those from Piper Cams, and using them can lead to coil bind or valve float. Therefore, a mandatory spring kit, such as the Piper VSSFECO20K Single Valve Spring Kit, is required as a minimum. For high-boost builds or sustained high-RPM track use, the VDSFECO20K Double Valve Spring Kit, as detailed here, is the recommended upgrade. Additionally, ECU recalibration is a mandatory requirement following installation to properly manage the altered cam timing and overlap characteristics. This kit is intended for the 2012-2018 Ford Focus ST 2.0L EcoBoost models.