Guzzi should have implemented the Toyota principleI thought that Guzzi flacking chrome bore thing was long fixed. That ring gap is pretty shocking.
There is a more modern way of dealing with it. BMW had a lot of trouble with breaking shaft drives on the 1250 GS. Now on the 1300 they have made it it a routine maintenance item - the shaft drive has to be replaced (at your cost of course) at regular intervals.my 2018 Kawasaki H2 SX SE Supercharged (since sold). Single sided swing arm. Recalled for failure to lubricate the rear wheel bearing at the factory.......
when I took it apart myself, the dry wheel bearing was scorched blue, that would have been a spectacular failure at speed