Valve Seat - 2.132" OD x 1.800" ID x 0.460" H - Evolution Big Twin | Twin Cam | XL (except RH)
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