.990 TI Valve Spring Retainers - 10 Degree

The .990 TI Valve Spring Retainers with 10-degree geometry are precision-engineered components designed for high-performance engine builds where valve train stability and durability are essential. These retainers are crucial for serious engine modifications, whether for competition drag racing or street performance applications that require increased spring pressures and RPM limits.

Manufactured by PAC Racing Springs, these titanium retainers feature a .990-inch diameter that balances lightweight design with structural integrity. This design reduces overall valvetrain mass, minimizing inertial loading on cam lobes and follower surfaces. The 10-degree geometry optimizes the relationship between the valve stem and spring, ensuring proper seating and load transfer while reducing stress concentrations that can lead to premature wear or failure.

Ideal for builders developing competitive engine combinations, these retainers are suitable for turbo and supercharged applications, as well as high-RPM naturally aspirated engines that push beyond stock specifications. Their superior strength-to-weight ratio allows them to handle aggressive spring pressures while maintaining dimensional stability across wide temperature ranges, making them a must-have for any serious engine builder.