Manley Performance Steel Retainers for Manley 221423 Valve Springs, STD Installed height

Manley titanium valve spring retainers are a great way to lighten your valvetrain, in order to rev higher and make more power. They're manufactured in Manley's own CNC turning centers from special heat-treated 6AL 4V titanium alloy, selected to deliver maximum strength and reliability. These retainers are excellent for all types of racing, and are designed for valve stem locks with a 10 degree taper.