Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Beehive Springs with .650in. Lift. - AV&V

Note: Maximum Recommended Lift = .650"

* Beehive steel valve spring kit

* Ultra pure chrome silicon+Nickle spring wire

* Extra processing for fatigue resistance

* Resist pressure loss & fatigue associated with extremely aggressive cams in high compression engines

* Reduce vibration & harmonics

* Includes springs,retainers & upper & lower collars

* 185lbs@1.860, 370lbs@1.250"

* coil bind 1.150"

* Small end ID = .740", OD= 1.185"

* Large end ID = 1.055", OD = 1.500"

* CNC machined keepers

Tech Tips:-

* Rocker box clearance must be checked

* Spring travel must be checked

* Valve timing must be accurate

** Over revving will lead to pre-mature failure of Valve Springs & collars.

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