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Loud thud/knock when hitting bumps

I

illest15

Guest
Hi guys!

After I changed to coilovers I get a really loud and hard thud/bang in the back when i hit sharp bumps on the road. The coilovers are Apexi N1. It's rather harsh and its real bad when hitting sharp bumps at speed. Does not happen normally or even going over large bumps, only the sharp ones.

I thought it was the driveshafts bottoming out because of the drop in height, but after looking and feeling other S15's they feel the same.

Does anyone know what the cause of this bang/knock sound could be?

Cheers, appreciate it :)
 
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