10 Degree Titanium Retainers - 1.550

The MANLEY 10 Degree Titanium Retainers – 1.550 (MPN 23644-16) are precision-engineered valve spring retainers designed for high-performance and racing engine builds where reliability and weight reduction are non-negotiable. These retainers are essential components in any serious head package, preventing valve spring surge and maintaining consistent preload across the entire RPM range.

Constructed from titanium alloy, these retainers deliver significant weight savings compared to steel alternatives—a key advantage when reducing reciprocating mass in high-RPM applications. The 10-degree seat angle geometry is engineered to match OEM and aftermarket valve guides, ensuring proper valve stem contact and eliminating binding or misalignment under load.

Serious engine builders, motorsports competitors, and enthusiasts pursuing maximum reliability on modified or naturally aspirated engines will benefit from these retainers. Their compatibility with standard spring packages and ability to handle aggressive spring pressures make them a critical choice for high-performance applications.