If you notice that the motorcycle's engine is losing power, it may be worth checking the exhaust gaskets. If the exhaust is not completely sealed, it is often due to damaged gaskets.
How do I check? You can quickly recognize leaks by the fact that they turn black. If you want to be on the safe side, you can also simply hold your hand in front of the sealing point at a distance of a few centimeters while the engine is running. You will immediately feel heat escaping, but be careful: it's hot air! So don't hold your hand too close.
If you have felt any leaks, you should definitely replace the gasket with a new one.
In this category you will find gaskets for manifolds and rear silencers.
You will also find the graphite bushings required for some Guzzis here.