Description

JIMS, valve spring kit. Titanium .600″ lift

Street & Performance. Titanium 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″.

Fits: > 84-99 Evo Big Twin; 99-04 Twin Cam; 86-03 XL Sportster (NU)