Method for joining components of an exhaust system

A method of joining components of an exhaust system, the method comprising:

• obtaining a longitudinally extending outer sleeve;
• obtaining a first pipe with a first end;
• obtaining a second pipe with a second end;
• inserting the first end of the first pipe within the outer sleeve to define a first overlap;
• inserting the second end of the second pipe within the outer sleeve to define a second overlap;
• radially inwardly deforming the outer sleeve and the first pipe at the first overlap;
• and
• radially inwardly deforming the outer sleeve and the second pipe at the second overlap, the outer sleeve and the first pipe as well as the outer sleeve and the second pipe being pressed into engagement with one another along a length of first overlap and the second overlap to define a pipe joint, further including concurrently engaging a tool with a radially inwardly extending projection with an outer surface of the outer sleeve to form a dimple in the outer sleeve and a corresponding pocket in the first pipe or the second pipe while at least one of the radially inwardly deforming steps is performed, wherein during the engaging a tool with a radially inwardly extending projection with an outer surface of the outer sleeve, material around a perimeter of the dimple is constrained to define a longitudinally elongated dimple shape as compared to a shape of the projection.