I resisted the urge to fit brake reaction bars to my Roadster, read somewhere that they have an adverse effect on road holding and handling when cornering.
Perhaps, but they are easy enough to remove.
To be honest I'd have thought they would improve things as they stiffen the front axle assembly against the frame at the top of the struts, so breaking whilst cornering would be improved and the suspension wouldn't react to the torque reaction from the brakes.
I'll have to wait and see.
Fitting the Suplex suspension upgrade has made a big positive improvement.