What modification can be made to a motorcycle's exhaust system to enhance torque?

Enhancing torque in a motorcycle's exhaust system can be effectively achieved by increasing the exhaust diameter. When the diameter of the exhaust pipe is increased, it allows for a more efficient flow of exhaust gases. This reduction in backpressure facilitates improved engine breathing, enabling the engine to expel exhaust gases more effectively. As a result, the engine can achieve a better torque curve, especially at low to mid-range RPMs.

A wider exhaust diameter can also lead to improved scavenging, which is the process of removing exhaust gases from the combustion chamber at the end of the power stroke and can help in drawing in fresh air-fuel mixtures more effectively. This leads to a more efficient combustion process and translates into increased torque output.

Modifying the exhaust system in other ways may not necessarily lead to the same enhancements in torque. For example, installing a larger engine could increase overall power but doesn't directly relate to enhancing the torque characteristics of the existing engine's exhaust system. Replacing the exhaust with a straight pipe might improve peak power but can negatively affect the low-end torque due to increased noise and loss of back pressure needed for proper scavenging in some engine designs. Similarly, adding more baffles may restrict flow and create turbulence, negatively impacting exhaust efficiency and not contributing to