SKUNK2 RACING H-SERIES ALPHA VALVE SPRING AND TITANIUM RETAINER KITManufactured exclusively from super clean, chrome silicone wire milled in Japan, Skunk2s Alpha Valve Springs for Hondas F, H series VTEC engines are a product of the companys years of racing and engine building experiences. By using inner and outer springs mated together through a slight interference fit and with differing frequencies, Alpha Valve Springs are able to prevent valve float and maintain valvetrain stability at engine speeds in excess of