MACE PERFORMANCE TITANIUM DUAL VALVE SPRING KIT TO SUIT FORD LTD AU INTECH VCT 4.0L I6This Mace performance titanium valve spring kit is a direct drop in replacement for mildly modified builds using aftermarket camshafts. With the combination of a conical style spring to dampen the harmonics of the valve train and a light weight titanium retainer, you can guarantee consistent performance and durability. Contents: Shim kit Dual spring Titanium retainer Valve Spring Specifications Vehicle Fitment Guide Note: The image is for illustrative