Ferrea 6000 STD Competition Exhaust Intake Valves for Mitsubishi 4G63 T DSM EVO To manufacture the valves, we use our exclusive two-step slow forging process using EV8 stainless steel on both intake and exhaust valves We provide a special heat-treatment and stress relieving process, along with hard chrome stems and friction-welded hard tips Intake Valve Specs: Head Diameter = 34mm, Stem Diameter = 6.57mm, Overall Length = 109.7mm, Tip Length = 3.8mm Exhaust Valve Specs: Head Diameter = 30.5mm, Stem Diameter = 6.55mm, Overall Length = 109.7mm, Tip Length = 3.8mm Fits Mitsubishi 4G63 / 4G63T (Evo, DSM) *Includes 8 intake valves (F6026) and 8 exhaust valves (F6025)