Crower 87057T-20 Features:

5/16 in. valve spring retainers for conical spring applications Machined from heavy-duty 6AL4V titanium for reduced valvetrain mass 7-degree lock style, one-piece retainer design, sold as a 20-piece set Fits single valve spring setups with 1.000 in. outer and 0.650 in. middle spring dimensions

Titanium Retainers For 5/ 16 In. Valves, Conical Springs, Features:

• 6AL4V titanium construction for weight reduction and valvetrain stability in high-rpm operation and performance-focused engine builds
• Fits 5/16 in. valves with conical springs for precise compatibility in single-spring valvetrain applications and streamlined installation
• 7-degree lock style with one-piece retainer design for secure valve spring location and consistent valvetrain control under load
• 1.000 in. outer diameter and 0.650 in. middle diameter for matched spring fitment and reliable component alignment during assembly
• 20-piece set without locks, direct fit for Dodge Viper V10 applications and complete retainer coverage for full engine builds