Manthey-Racing upgrade for Porsche 718 Cayman GT4 RS reaches US

Manthey-Racing continues to expand its offerings in the U.S., this time with an upgrade for the Porsche 718 Cayman GT4 RS. Manthey is a German motorsports and engineering company with close ties to Porsche, and has in the past been tapped to oversee some of Porsche’s racing programs. It recently entered the game of offering upgrades for some of…