Of the elements that make up the four-stroke cycle, the exhaust is the last part of the equation, and it also represents the end of an engine's ability to make power. Once the exhaust gas leaves the ...

These are the most common sizes and shapes of the XR-1 mufflers. The oval is the most popular for street cars because it doesn't hang down as far as the others and has more packing material. After all ...

A vehicle's muffler and resonator are responsible for keeping the exhaust quiet for a peaceful ride, but also free from ...