What is a motorcycle straight pipe?

[VonCarter]

A motorcycle straight pipe is an exhaust pipe. Internal structure of the exhaust pipe: The inside of the exhaust pipe contains a muffler. Motorcycle exhaust pipes primarily use porous sound-absorbing materials to reduce noise. By fixing the sound-absorbing material to the inner wall of the airflow channel or arranging it in a specific pattern within the pipe, a resistive muffler is formed. When sound waves enter the resistive muffler, part of the sound energy is converted into heat energy and dissipated through friction in the pores of the porous material, thereby weakening the sound waves passing through the muffler. Function of the exhaust pipe: The main functions of the exhaust pipe are to expel waste gases and reduce noise. However, it can diminish the engine's power. A larger exhaust pipe reduces exhaust resistance, meaning it decreases the engine's effective power loss. Conversely, a smaller exhaust pipe increases exhaust resistance, consuming more of the engine's power. Racing motorcycles typically have two exhaust pipes and produce loud noises because they have minimal exhaust resistance and often lack mufflers, resulting in lower power loss and faster acceleration.