Spring Retainer Set

Manley TensileMax Steel Retainers combine exceptional strength, fatigue resistance, and wear durability in a lightweight design that approaches titanium retainer weights. Manufactured from a proprietary TensileMax alloy, precision CNC machined, heat treated, and finished with Manley exclusive impingement process, they deliver reliable high-RPM valvetrain performance for demanding racing and performance engine applications.

Part Type

Engine Valve Spring Retainer Set

• Designed to be as light as standard titanium retainers and very close in weight to lightweight titanium versions (within 2-4 grams)
• Manufactured from our incredibly tough TensileMax alloy
• Optimum balance between ultimate strength, fatigue strength, hardness, and ductility
• Specially heat treated to provide a hardness of Rc 52-54 and prevent retainer wear
• Unique impingement process that improves fatigue strength and promotes better oiling between the spring and retainer

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Reference Information

Valve Spring Retainers, Steel, 7 Degree Lock, 1.570 in. Outside Diameter, .745 in. Inside Diameter, Set of 16

Manley TensileMax steel valve spring retainers are designed for serious engine builders. They're as light as standard titanium retainers and within 2 to 4 grams of lightweight titanium versions. The tough alloy retainers are specially heat-treated to provide a hardness of Rc 52-54 and prevent retainer wear. Manley's exclusive process yields a part that delivers optimum balance between ultimate strength, fatigue strength, hardness, and ductility. A unique impingement process developed specifically for the TensileMax alloy and hardness range improves fatigue strength and promotes better oiling between the engine valve spring and retainer. They are available in a variety of sizes, individually or in larger sets.