"SP" Series Dual Valve Springs with Damper (16) 1.530" OD ISK8205-SP Product:150LBS @ 1.900" Seat Pressure, 440LBS @ 1.300" Open Pressure, 1.150" 6L V8 F/I - All

6L V8 F/I - All 1981 PORSCHE 928 4

and 1 PCV port Performance upgrade for stock to mildly modified vehicles Universal calibration for easy bolt-on performance Clear fuel level sight glasses

4L L4 F/I - Alla

TS-0502-2004

"SP" Series Dual Valve Springs with Damper (16) 1.530" OD ISK8205-SP Product:150LBS @ 1.900" Seat Pressure, 440LBS @ 1.300" Open Pressure, 1.150" 6L V8 F/I - All"SP" Series Dual Valve Springs with Damper (16) 1. 530" OD150LBS @ 1. 900" Seat Pressure, 440LBS @ 1. 300" Open Pressure, 1. 150" Coil Bind ISK8205 SP K8205 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