Rear end knocking

[2008tdihighline]

Hi

My b6 has started knocking on the rear passenger side. Its an odd one and speed bumps and slow gradual bumps in the road don't create the sound.

I'd say when the wheel is on a rough surface creating high frequency it does it.

I do know I need a new shock on that side as its leaking but can't imagine its that unless its a top or bottom mount.

I suppose the obvious is drop links, arb, rear trailing arm bush, the one that bolts to the chassis.....

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