Call/Text 706-216-0175 -- The Frontier six-wheeled amphibious vehicle is the starting point for our XTV lineup — a point that demonstrates the high standards at ARGO. The Frontier 600 6x6 delivers the same dependable power and reliability of their bigger siblings to maximize your ability in the woods, mud or water. Our Classic transmission with ARGO Progressive Steering (APS) . Feel in control, safe and excited at all times. The new ‛22 Frontier 650 6x6 continues to rise above the industry’s standard definition of entry-level.