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Vehicle Info NeededEndurance Plus Dual Valve Spring Set 1.560 in. OD
Ships on 09/10/2026
Lowest Price Guarantee- Endurance Plus Dual Valve Spring Set
- Outer OD/ID: 1.560 in./1.145 in.
- Inner OD/ID: 1.040 in./.740 in.
- Seat Load: 245 lbs. at 2.000 in.
- Open Load: 600 lbs. at 1.280 in.
- Coil Bind Height: 1.180 in.
- Rate: 500 lbs
Isky Racing Cams Dual Valve Springs provide the best performance for street or race applications. The dual valve springs are precision wound from chrome silicon wire and are available in three varieties to best suit your engine application.
Standard Dual Valve Springs
The standard valve springs provide better durability than stock replacement valve springs. These drop-in springs are perfect for use in vehicles needing both street and strip performance.
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SP Series Dual Valve Springs
The SP Series valve springs feature increased endurance over Isky standard springs, without emptying your wallet. The outer spring is a special hi-tensile chrome silicone material, providing Spinton test results of 8000 RPM for 700 racing miles.
Endurance Plus Dual Valve Springs
Endurance Plus valve springs offer the best durability and service life of any Isky dual valve spring. The outer spring is wound from a special high-strength alloy to boost spring durability even higher, making this spring the perfect choice for high-performance endurance races.
Features
- Three options available to best suit your engine's needs
- Standard springs for drop-in boosts
- SP series for economic endurance boosts
