I discovered a special tool required to fit the 54 and 57mm exhaust systems, with proper swing arm clearance. Thanks to Tony at Ducati Melbourne, I was shown how to mount the link holding the collector, on the front of the mount welded to the frame, and behind the rubber bushes on the mount attached to the exhaust. Mounting it this way pushes the exhaust clear of the swing arm. The trick is to move the pipe in such a way that the link can be fitted this way. This is done with a special tool that should really come delivered with the system, a tyre iron. Placing a suitably padded (so it doesn't scratch anything) tyre iron between the exhaust and the swing arm, then lever it out, while someone puts the link in place. You need to use plenty of force, because it actually bends the front engine pipe that runs under the sump closer to the centre of the bike. Voila no more clearance problem.
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