The tip changes neither power nor sound: it changes the appearance. It is the only visible part of the exhaust, and often the finishing touch on a build — the detail that makes a car look complete or makeshift.

The choice comes down to three points: the inlet diameter, which must match the existing outlet, the fitting method — a screw-on model takes ten minutes to install and can be removed for the roadworthiness test, while a welded one will never move again — and the finish, brushed stainless steel, chrome, black or carbon.