4AGE 20v CNC Blacktop Ported Head
CNC ported 4age 20v heads. Comes with everything except OEM camshafts, cam gears and valve cover. Supertech oversized valves available at extra cost. Valve seats machined by Newen Contour BB for better to further increase CFM as well as horsepower.
Please allow 2-3 weeks for the head to be ready