10 Degree Titanium Retainers - 1.550

The MANLEY 10 Degree Titanium Retainers – 1.550 (MPN 23644-16) represent a premium valve spring retainer engineered for high-performance and competition engine builds. These titanium retainers are designed to manage dual spring setups, delivering the lightweight strength and thermal stability demanded by serious engine builders and racing applications.

Constructed from titanium, these retainers offer significant weight savings compared to traditional steel alternatives—a critical advantage in high-RPM applications where valve train inertia directly impacts engine responsiveness and reliability. The 10-degree valve angle and 1.550-inch dual spring specification ensure compatibility with modern performance cam profiles and aggressive spring rates. The 1.140-inch inner diameter and 0.740-inch outer diameter steps provide precise seating and controlled spring compression, essential for maintaining valve event timing under extreme conditions. This 16-piece set covers a complete cylinder head application.

MANLEY titanium retainers are specified by professional engine builders, dyno shops, and racing programs where component reliability cannot be compromised. The titanium construction resists corrosion and thermal degradation, making these retainers suitable for both naturally aspirated and forced-induction builds. Buyers should confirm head compatibility and spring seat specifications with their engine builder or manufacturer prior to purchase, as retainer selection is application-specific.

These retainers are sold as a complete 16-piece set and are not intended for street applications without professional engine assembly and dyno validation. Proper installation requires experienced machine shop or engine builder involvement to ensure correct spring loads and valve geometry.