These new arms are everything you've come to expect from RPM. They're stronger than stock, beefier to help survivability during those unexpected incidents and built to tighter tolerances, making critical suspension settings much easier to lock down.
RPM's A-arm design looks more aesthetically pleasing than stock, yet the design is more than just good looks. The angled leading and trailing edges are more aerodynamic and allow the A-arms to transition up and over objects much more easily than the blunt, flat-edged design of stock A-arms. RPM added huge bosses around the hinge pins as well, reducing the possibility that a big hit will stretch the hinge pin holes. They removed the tiny outer hinge pin locking screw as well, in favor of an in-line screw. This helps improve overall A-arm strength while keeping the outer hinge pin locked solidly in place.
RPM's A-arm design looks more aesthetically pleasing than stock, yet the design is more than just good looks. The angled leading and trailing edges are more aerodynamic and allow the A-arms to transition up and over objects much more easily than the blunt, flat-edged design of stock A-arms. RPM added huge bosses around the hinge pins as well, reducing the possibility that a big hit will stretch the hinge pin holes. They removed the tiny outer hinge pin locking screw as well, in favor of an in-line screw. This helps improve overall A-arm strength while keeping the outer hinge pin locked solidly in place.