This is all titanium plumbing...
You can bend it, but it doesn't like it,
the weight savings from regular stainless steel or any other metal is unreal.
Let's just say a company makes a complete Exhaust manifold to muffler in titanium for a S2000, and it weighs 20 lbs. combined.
All F1 cars us it in a mixture with some other rare metal for the exhaust manifolds.