The indentation is in the pipe itself, just the Gateway motorsports park shaped hole is in the chrome cover.
A standard set of GL1100 pipes do not come apart between the header and the silencer, they are 2 one piece pipes connected by a balance tube.
They can come apart though, I've heard of a lot of people using Harley Davidson silencers.
A standard set of GL1100 pipes do not come apart between the header and the silencer, they are 2 one piece pipes connected by a balance tube.
They can come apart though, I've heard of a lot of people using Harley Davidson silencers.