This high quality High Lift Spring Kit is a must when using any of our high performance Cams (TC-4G, TC-46G, TC-5G, TC-26G, TC-546G, ER-2, or ER-46) on 84- 99 Evolution or 99- 04 Twin Cam engines.
Titanium top retainer
Interference wound double springs with damper
For use with cams up to .640 lift
180 lb. seat pressure
Can be used in 05-later engines if valves & guides have been converted to 5/16 diameter