JIMS JIMS, valve spring kit. Chromoly .600″ lift

Description

JIMS JIMS, valve spring kit. Chromoly .600″ lift

84-99 Evo B.T.; 99-04 Twin Cam; 86-03 XL (NU)

Street & Performance. Chromoly top collars. Kits include top and lower collars, springs and valve keys. An interference double spring design with damper that keeps the inner and outer springs from locking and reduces harmonic vibrations. Spring OD 1.460″. Pressure 160lbs@1.850″, 440lbs@1.250″. Coil bind 1200″.