Clacking sound when going over bumps - new cause & solution?

[luv2ride]

found this

https://www.bestrestproducts.com/p-232-klackstopper-pair-of-2.aspx

anyone seen / heard of this before. we are all told it is the floating disks

 

[Moondog]

 

[Sharingroads]

 

[BlingKing]

 

[Moondog]

 

[BlingKing]

 

[teebag]

 

[Biker_Mike]

 

[motorfiets]

 

[lecap]

 

[KLRFegen]

 

[Sandban(g)k]

 

[lecap]

 

[Biker_Mike]

 

[KLRFegen]

 

[Moondog]