Mitsubishi Eclipse GS, GST 2.0L(4G63-4G63T) 1990-2000 Race Flo exhaust valves. 31.5mm head diam., 6.54mm stem diam., stock length 109.7mm O/A, 3.8mm tip length, Pro Flo 22° X 7/16" underhead angle/radius, .065" margin, .080" X 45° seat, 17° dish.