7/8 inch .095 steel tube

3/4 bolt

5" for short, 11" for long part

The best way to make A-arms is to use wood jig. This will ensure that they come out same. A very very important.

This is what I have been told, something to think about:

"when you use dual A-arms, there's a problem to overcome: when the suspension travels up, the wheels push outwards as the A-arms get closer to horizontal. what you can do to fix this is make the upper A-arm shorter than the lower A-arm. this way, when the suspension travels up, the top A-arm, being shorter, pushes outward at a greater rate, making the top of the tire lean outward. when the tire
leans out, the part of the tire contacting the ground does not move outward." -Eric (erk7000)