I bought this for the 2019+ 1290 GT, but the installation instructions were focused on the Super Adventure bikes. It seems they use the same guard, but the fittings are somewhat different. There were some extra mounting pieces that I didn't need (always unnerving to install something and have bolts left over), so it would be good to have GT specific instructions included.
That said it installed very easily and looks like it came this way from the factory.