the fuel-air mixture is burnt, the exhaust stroke pushes the gasses
into the exhaust manifolds.
manifolds are bolted to each head, directing the gasses into the engine
From there the gasses flow through the intermediate pipe, to a pipe curved
around the rear end, to the muffler. The flow continues from the muffler,
through the tailpipe, into the atmosphere.
Clamps and hangers hold the pipes in place.