countersteer wrote:How do they adjust the roll stiffness? I don't see any adjustment built into the system. I recognize the torsion roll bar can be swapped but I didn't see any incremental adjustment.
I can't confirm whether or not this is the case for this particular chassis and manufacturer, but it's not uncommon on that type of ARB setup to have the adjustment built into the lower, pivoting mount. Instead of making it rigid on a tube shape, it can be mounted on a blade which the driver can adjust from stiff to soft as the bar rotates. I don't have a diagram, but you may be able to find something Googling "blade adjustable anti roll" or something similar.
Also, where those links attach to the "T" section at the top there might be several mount spots available from outboard to inboard. That would change the overall motion ratio and roll stiffness as a result.
Grip is a four letter word. All opinions are my own and not those of current or previous employers.