Ferrea Intake & Exhaust Titanium Retainer Kit - BMW / M50 / M51 / M52 / M54 / S50 / S52

Description Actual part may differ from image above. This Kit Includes 24Ferrea Intake & Exhaust Titanium Retainers. 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. – Valve Stem Size: 6 mm.

– Diameter (A): 28.20 mm – Inn Step Diameter (C): 17.17 mm For use with Double Spring-7 Degree Pro CNC Ferrea Racing Springs #S10049 Replaces OEM Part # 11-34-1-432-453 / 11 34 1 432 453 / 11341432453.