The tip changes neither the power nor the sound: it changes the appearance. It is the only visible part of the exhaust, and often the finishing touch of a build - the detail that makes a car look finished rather than improvised.

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