Maverick R Pro Desert Chromoly Upper A Arms by CT RaceworxSKU: CT MAVR 2030 0 Our Upper A Arms offer more than meets the eye, bringing a host of benefits to the table. If you're seeking increased strength, superior handling, ability to use 3. 0 front shocks, and stylish design for your machine, look no further. The biggest change that we made to these arms is the balljoint is traded out for a spindle pin setup. We gained an enormous amount of strength going from a balljoint that has a size of . 540" to a