Here is the manufactures rationale behind the Wunderlich Screen reinforcement brackets:
Screen Reinforcement
The adjustable windscreen is a very clever idea however it only supports on the right side and the left side of the screen is under supported. When riding on bumpy roads or off-road, the original screen can bounce around and clatter loudly. Wunderlich has developed a solution for this. A strong reinforcement bracket is all you need to snugly and securely fasten your windscreen to prevent it from banging around, even on the roughest terrain.
Loosen the Wunderlich reinforcement knob, adjust your screen to the desired position and tighten the reinforcement knob again. Now the windscreen is supported on both sides and the screen movement is kept to a minimum.
The facts:
Additional bracket to stabilize the wind screen.
No restriction of the adjustment radius (the additional bracket moves in the same circular arc).
Elimination of vibration and rattling noises.
The adjustment knob is designed so that it will not fall off, even if left loose.
Powder Coated Steel
Can be easily adjusted via the adjustment knob.
The adjustment mechanism and the windscreen are protected and vibration cracks are prevented.
Fits with original - or aftermarket screens.
Easy mounting.
Cheers
Chris & Team