Hi-Rev Dual Valve Springs (Set of 8)
Classic Aircooled VW Valvetrain Parts parts by Limebug
High revving engines need the extra protection of dual valve springs. Most high performance single valve springs will prevent valve float below 6500 RPM.
Engines that are designed to exceed 6500 RPM should be equipped with dual valve springs. The valve springs supplied by CB are manufactured of silicone treated steel to help stand the stress of high performance driving.
It’s necessary to machine the cylinder head valve spring boss before installing dual valve springs.
OE Reference: 1491