I got round to lowering my GS with Touratech 20mm lowering springs. I found some YouTube vids very helpful especially this one:
https://www.youtube.com/watch?v=242...3c6ifLbh&index=2&t=521s&ab_channel=ABIKETHING
The front spring I could compress with wire ties and two bar clamps but the rear spring took more persuasion so I knocked up a custom spring compressor.
Before and after measurement shows the height dropped by 25mm not 20mm.
https://www.youtube.com/watch?v=242...3c6ifLbh&index=2&t=521s&ab_channel=ABIKETHING
The front spring I could compress with wire ties and two bar clamps but the rear spring took more persuasion so I knocked up a custom spring compressor.
Before and after measurement shows the height dropped by 25mm not 20mm.