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1 Certified for competition use
AR134-1805
200" Coil Bind: 1
For 1500+ hp use PRO-X ringless input shaft
This takes all of the mechanical variables out of the picture to produce exact ignition timing
"SP" Series Dual Valve Springs with Damper (16) 1.550" OD ISK9365-SP Weiand 1 Certified for competition use"SP" Series Dual Valve Springs with Damper (16) 1. 550" OD225LBS @ 1. 950" Seat Pressure, 550LBS @ 1. 270" Open Pressure, 1. 170" Coil Bind ISK9365 SP K9365 SP The "SP" series utilises "Hi Tensile" Chrome Silicon outer material. For applications with radical cams and or moderately high rpm, where traditional chrome silicon springs prove inadequate, the "SP" series is the next highest level of endurance. All "SP" series springs are Spintron Test Proven
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