Endurance Plus Dual Valve Springs with Damper (16) 1.560" OD ISK9365-PLUS Product:235LBS @1.950" Seat Pressure, 560LBS @ 1.270" Open Pressure, 1.170" C The bottom line is a

The bottom line is a firm

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Endurance Plus Dual Valve Springs with Damper (16) 1.560" OD ISK9365-PLUS Product:235LBS @1.950" Seat Pressure, 560LBS @ 1.270" Open Pressure, 1.170" C The bottom line is aEndurance Plus Dual Valve Springs with Damper (16) 1. 560" OD235LBS @1. 950" Seat Pressure, 560LBS @ 1. 270" Open Pressure, 1. 170" Coil Bind ISK9365 PLUS K9365 PLUS The Endurance Plus series of valve springs utilises a specially processed Tool Room Material for increased endurance and reliability beyond the "SP" series plus special processing for increased durability. Endurance Plus springs are designed for late models, modifieds, etc and are