Lowering links for the suspension linkage.
Depending on modal, something like this..
https://www.ebay.co.uk/itm/Suzuki-SV...:rk:5:razz:f:0
There are cheaper ones around, but I have no idea about quality of them and wouldn't mess with the really cheap ones as if they snap the rear of your bike will collapse.
You'll probably want to bring the forks up a cm or two through the yokes too, otherwise your bike geometry will be tipping backwards making it heavy to steer.