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$499.95
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All Supertech valve springs are manufactured using premium Superclean Chrome Silicon Vanadium Steel alloy, engineered for high RPM durability and long-lasting performance. This premium alloy provides excellent structural memory, minimizing fatigue and helping your valvetrain maintain peak operation under stress.
Every Supertech valve spring is computer-designed to keep wire stress levels within the fatigue limits and control harmonics at high RPM. The dual spring configuration (inner + outer) is engineered to improve stability and harmonic damping for reliable valve control in demanding street and race applications.
This spring features a dual spring configuration designed to enhance valvetrain stability and reduce the risk of valve float at high RPM. Its specifications include a spring rate of 11.50lbs/mm, a free length of 45mm, a coil bind height of 20.70mm, an outer spring ID of 21.85mm, and inner spring dimensions of 20.50mm OD and 15.50mm ID.
Features and Benefits
Dual spring design improves stability and harmonic control
11.50lbs/mm spring rate ensures optimal valve control
45mm free length for proper installed-height tuning
20.70mm coil bind height for high-lift compatibility
Nested spring geometry for correct seat and retainer fit: 21.85mm outer spring ID, 20.50mm inner spring OD, 15.50mm inner spring ID
Premium chrome silicon vanadium alloy for extreme durability
Improved high-RPM valve control with added harmonic damping
Extended spring life and reliability under high loads
Reduced valve float and improved engine response
Ideal for high-performance, turbocharged, and endurance applications
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| SKU:
SPR-H1005D-16
