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 Ferrea’s Pro-Series Retainers and see why professional engine builders demand Ferrea Racing Components.

For use with Double Spring-7 Degree Pro CNC Ferrea Racing Springs #S10049

(M50 - M51 - M52)
Valve Stem Size: 6 mm
Diameter (A): 28.20 mm
Inn Step Diameter (C): 17.17 mm
References: Double Spring-7 Degree Pro CNC Ferrea Racing

Replaces OEM Part #: 11-34-1-432-453 / 11 34 1 432 453 / 11341432453