Endurance Plus Dual Valve Springs with Damper (16) 1.550" OD ISK9315-PLUS Product:220LBS @1.900" Seat Pressure, 530LBS @ 1.240" Open Pressure, 1.130" C 2L L4 Gas From 6/11

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Endurance Plus Dual Valve Springs with Damper (16) 1.550" OD ISK9315-PLUS Product:220LBS @1.900" Seat Pressure, 530LBS @ 1.240" Open Pressure, 1.130" C 2L L4 Gas From 6/11Endurance Plus Dual Valve Springs with Damper (16) 1. 550" OD220LBS @1. 900" Seat Pressure, 530LBS @ 1. 240" Open Pressure, 1. 130" Coil Bind ISK9315 PLUS K9315 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