Front A-Arms ARRMA Kraton for Outcast 4s BLXDetails: These A arms reduce the amount of movement of the A arm at the hinge pins, providing for better steering response and more consistent camber, caster, and toe angle settings. The addition of a second shock mount hole further out on the arm provides for a lower profile suspension set up. This shock position allows the suspension to lay down a little further, dropping the ride height for a lower center of gravity and better cornering stability.