Mitsubishi 4G63 DOHC EVO 1-9. Beehive Spring & Titanium Retainer Set

Made from ultra clean Silicon Chrome spring steel with a higher fatigue resistance compared to other spring steels. Heat treating and post processing is the highest quality available. High frequency spring design to reduce spring surge at high operating RPM.

IN: 115lb seat pressure at 35.5mm installed height / 245lb at 12mm valve lift
EX: 120lb seat pressure at 35.0mm installed height / 254lb at 12mm valve lift
Spring coil bind height 22mm.

Kit contains 16 springs, 16 Ti retainers and 16 spring bases.