Buddy Club P-1 Racing Dual Valve Springs allow for maximum lift while preventing valve float situations which can occur under high RPM, high-lift conditions. These valve springs are ideal for high-lift aftermarket camshafts and is a great combination with Buddy Club Titanium valve retainers. Please consider using genuine Buddy Club P-1 Racing Dual Valve Springs and Titanium Retainers for Racing Spec 4 and Racing Spec 5 Camshafts. set of 16 springs