My experience with solid front A arm bushings is big time harshness on street type roads, especially where winter includes snow, slush, salt, potholes, snowplows, etc.
Now if they're used for track duty, that's a completely different story. Heim joints or solid AL or steel bushings have no road isolation. The only rubber would then be the upper strut mounts and the subframe. At least poly has a bit of give.....
What about durability testing? Will you be doing this BEFORE proceeding with sales?
Redcoat Raceworks. Performance parts and custom fabricating for Contours, Mystiques and Cougars. Specializing in chassis and suspension parts. Custom end links, control arms, strut tower bars, engine torque braces, etc.
| 
