As this thread appears to be solely about the SSL 5 link after market kit, I thought it worth mentioning MMC's own as fitted to Aero Racing variants and latest Roadster.
Undeniably not as well engineered as the SSL version in its own right, it does benefit from not relying on any clamping to back axle, instead linking to dedicated brackets welded to back axle.

I wonder if the SSL clamping is indexed to the back axle in any way.
