Just a quick check to see if I'm right about this.

When cornering suddenly and very hard (fast switching left to right bend for example), I get a single knock from the rear end.

As I say, it only happens when pushing it, so I'm noticing it more now with the coilovers fitted! Before I only got it when turning fast up hairpins on steep mountain-like roads.

Rear beam bushes I guess? Or maybe rear arch braces fighting body twist?

Can't think of much else as I have no RARB, and the ride height is only 5mm down on standard currently. Everything else is all bolted/fitted up correctly. Also my exhaust is standard.

Thanks in advance

Have you checked the exhaust mounts?

I've had the centre mount welded back on, and the rear mount is fine because I checked it. Guess it could be the exhaust knocking on the beam or something maybe....

How can I check the beam bushes? I looked at them over the weekend and they seemed OK from what little of them I saw. It's kinda hard to see them! Would it be knocking constantly if it was them? Hmmm

I bet it will be your exhaust knocking on the rear beam.

Get a mate to ride in the back passenger side and see if that makes it worse?

If so its on the beam