A rear muffler assembly for an internal combustion engine has a first and
a second muffler through which exhaust gases flow and which are separated
from one another. The first and second mufflers have in each case an
exhaust gas delivery and discharge through an exhaust gas routing pipe
issuing into an exhaust pipe which follows downstream and in which an
exhaust gas shutoff flap which can be closed temporarily is disposed. The
rear muffler assembly contains two exhaust gas routing pipes, the first
exhaust gas routing pipe having within the rear muffler an issue orifice
for exhaust gases positively emerging from the second exhaust gas routing
pipe, with the exhaust gas shutoff flap closed, into which first exhaust
gas routing pipe the exhaust gases from the internal combustion engine
flow directly.