PAC Racing Springs PAC-R565-16 500 Series Titanium Valve Spring Retainers, 10-Degree, Set of 16

Upgrade your valvetrain with PAC Racing Springs PAC-R565-16 500 Series titanium valve spring retainers. Designed for demanding performance applications, this set of 16 retainers is engineered for use with 1.620-inch triple valve springs and provides a dependable fit for high-performance cylinder head assemblies.

Each retainer features a 10-degree valve lock angle and stepped outer diameters measuring 1.215 inches, 0.865 inches, and 0.630 inches. The stepped design supports proper spring and component alignment while helping maintain stable valvetrain operation under demanding engine conditions. Titanium construction delivers a strong, lightweight solution that helps reduce reciprocating valvetrain mass compared with conventional steel retainers.

Built for performance-focused engine builders and enthusiasts, the PAC-R565-16 retainers are suitable for compatible racing and high-output applications where precise fitment and durable materials are essential. Verify valve spring, valve lock, and cylinder head compatibility before installation to ensure the retainers match the complete valvetrain configuration.

Features:

• Brand: PAC Racing Springs
• Part Number: PAC-R565-16
• Series: 500 Series
• Material: Titanium
• Retainer Type: Valve spring retainer
• Valve Lock Angle: 10 degrees
• Spring Compatibility: 1.620-inch triple valve springs
• Stepped Outer Diameters: 1.215 inches, 0.865 inches, and 0.630 inches
• Quantity: Set of 16