A method for manufacturing a golf club head includes forming a hollow body having a crown on top of the hollow body, the crown having a rim formed on an outer periphery of the crown, a recessed area encircled by the rim, ribs formed on an inner face of the recessed area and multiple elongated bosses formed on a top face of the recessed area, removing the elongated bosses and polishing the top face of the recesses area to complete the process.