FEULING PARTS - PRESSURE RELIEF KIT - VALVE PLUNGER, SPRING & ROLL PIN - CAMPLATE - TWIN CAMPressure Relief Kit Valve Plunger, Spring & Roll Pin Camplate Twin Cam Highlights Increases pressure relief valve pop off psi Kit includes valve plunger, spring and roll pin Spring alone provides proper spring rate to control pop off pressure and oil flow in bypass port Made in the USA Notes Bench testing recommened with Feuling camplate pressure test tool (sold separately) to ensure proper valve and seal operation. + Fitment 1999 Harley Davidson