JIMS Valve Spring .600″ Lift Kit With Chromoly Retainers

• Spring kits are made from the highest grade materials

• Incorperates an interference double spring design with a damper

• The damper keeps the inner spring and outer spring coils from locking together while controlling power robbing harmonics in the spring

• Engineered for maximum performance in severe applications such as high compression , big inch street and race motors

• Chromoly retainers

• 1.460″ O.D.

• 1.200″ Coil bind

• .700″ I.D checking hieght

• Pressure at open height-lbs.-160, In.-1.850″

•Pressure at bind height – lbs. – 440, In.- 1.250″