Ferrea is pleased to offer our Pro-Series Titanium Retainers including sizes that fit both traditional Domestic springs and Sport Compact springs. Precision CNC-machined from aerospace quality titanium, these Pro Retainers are fully heat-treated and finished to exact tolerances, adding strength while offering a 40% weight reduction over conventional steel retainers. Examine the overall quality of Ferreas Pro-Series Retainers and see why professional engine builders demand Ferrea Racing Components.

– Valve Stem Size: 6 mm
– Diameter (A): 20.32 mm
– Inn Step Diameter (C): 15.75 mm

References: Intake (8 pieces) Single Spring-7 Degree Pro CNC Ferrea Racing Springs #S10157

Replaces OEM Part # 06E-109-641-A / 06E109641 A / 06E 109 641 A / 06E109641A