Isky Cams Precision Tool Room Single Valve Springs W, Damper (16) - 1.260" O.D. - 360 lbs., "Rate - 1.100" Coil Bind - [email protected]" Seat Pressure - [email protected]" Open Pressure - .600" Max Lift 356602 Three levels of case hardened

Three levels of case hardened roller bearings with a high-friction top surface that eliminates tire slippage

1963-1974 Buick Riviera

Through our research and development efforts

Made of Hyper-Flex(TM) performance polyurethane

Isky Cams Precision Tool Room Single Valve Springs W, Damper (16) - 1.260" O.D. - 360 lbs., "Rate - 1.100" Coil Bind - [email protected]" Seat Pressure - [email protected]" Open Pressure - .600" Max Lift 356602 Three levels of case hardenedYou're almost there. The end of a tough race is fast approaching, but to win, you'll need to push your engine to the limit. The tach will read close to 9000 RPM. Such sustained red line abuse is like sudden death overtime for your valve train. Ordinary roller valve springs will quickly succumb to resonant vibration, putting you out of the race. Only one valve spring can go there and come back alive, every time! Introducing Isky's new RAD 9000 process