Valve Seat - 1.757" OD x 1.410" ID x 0.430" H - Evolution Big Twin | Twin Cam | XL (except RH) | M8
Contain 18% - 22% Chromium for resistance to abrasion, corrosion and deformation, Nickel content of 1% - 2% for added corrosion resistance and toughness, Machined from solid bar stock and ground to exact tolerances, Alternative to Powder Metal, Made in the USA