Valve Springs

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	Evolution and Twin Cam valve springs kits include inner and outer spring assemblies, spring seats, top retainers and valve keeper keys.

HQ-2007 spring sets with titanium top retainers

HQ-2008 spring sets with steel top retainers

	HQ-2007	HQ-2008
Seat Pressure	160 lbs @ 1.75"	150 lbs @ 1.8”
Open Pressure	400 lbs @ 1.2"	380 lbs @ 1.8”
Travel -coil bind	1.055"	1.055"


	Shovelhead valve springs kits include inner and outer spring assemblies, spring seats, top retainers and valve keeper keys.

HQ-2001 spring sets with aluminum top retainers

HQ-2002 spring sets with titanium top retainers

	HQ-2001	HQ-2002
Seat Pressure	160 lbs @ 1.5"	160 lbs @ 1.5"
Open Pressure	350 lbs @ .990"	350 lbs @ .990"
Travel -coil bind	.890"	.890"

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