RPM A-arms for the Axial EXO Terra Buggy & Yeti are designed with unique features found only on RPM A-arms. They use 30 degree leading and trailing edges, which help the vehicle transition up and over tall objects instead of plowing into or through them. The oversized bosses for the hinge pin, shock mount and screws help support high breakage areas. Key oversized areas can be larger in diameter by at least 10% and wider by as much as 65%! A full set of front and rear A-arms from RPM weigh in less than stock arms as well, shedding unsprung weight in the process of adding some much needed muscle. A final, critical touch eliminates much of the slop from the suspension and steering systems. Hinge pin hole diameters are now .118" (or 3mm), cutting nearly .004" (.1mm) of slop from each hinge pin!