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over the space of a couple of weeks a definate knocking has apeared from the back.whenever the car goes over a bump in the road ,theres a clunk like something is loose ,maybe a bush or subframe mount .i dont think it the suspesion cause if you go over a speed bump fo example at speed its fine .only when the car is shaken if you like. i have been under the car nothing obvious but dont realy know where to look and how to test it . it could be something much simpler has anyone got any ideas as it does see to be getting worse.

Sounds like the drop links. Common fault.

what goes wrong with the drop links

They are known to wear. Best to replace them with the RS2 ones. Not dear to do.

It could also be a rear ARB bush.

drop link i reckon too. i had one go and it made the same noise. try wiggling the arb at either side with either both wheels off the ground or both wheels on the ground but not jacked up at one side

Drop link mate,mine had a pair a few years back,also did the rear wishbone bushes at the same time but i think i wasted my time and money but hey ho

VUNDERBAR as the germans would say passenger side knackerd ,looked at these before but not with both wheels off the floor.what should i replace them with whats the difference with RS2 ones .cheeRS

RS2 ones are metal instead of the stock plastic items