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2. Muffler - Wikipedia

   en.wikipedia.org/wiki/Muffler

   Silencer (silver) and exhaust pipe on a Ducati motorcycle A silencer cut open to show the insulation, chambers and piping inside the shell. A muffler (North American and Australian English) [1] or silencer (British English) is a device for reducing the noise emitted by the exhaust of an internal combustion engine—especially a noise-deadening device forming part of the exhaust system of an ...

3. Exhaust system - Wikipedia

   en.wikipedia.org/wiki/Exhaust_system

   Exhaust piping and silencer (muffler) on a Ducati Monster motorcycle In most motorcycles , all or most of the exhaust system is visible and may be chrome plated as a display feature. Aftermarket exhausts may be made from steel, aluminium, titanium, or carbon fiber.

4. Expansion chamber - Wikipedia

   en.wikipedia.org/wiki/Expansion_chamber

   When the descending piston first exposes the exhaust port on the cylinder wall, the exhaust flows out powerfully due to its pressure (without assistance from the expansion chamber) so the diameter/area over the length of the first portion of the pipe is constant or near constant with a divergence of 0 to 2 degrees which preserves wave energy ...

5. Glasspack - Wikipedia

   en.wikipedia.org/wiki/Glasspack

   This lower flow but slightly quieter design approach is commonly used in glasspack mufflers. Some modern muffler designs are similar in principle to the glasspack, but use more sophisticated sound-absorbing materials such as stainless steel mesh, and more advanced acoustic engineering, reducing noise while retaining the power-preserving ...

6. Dual-sport motorcycle - Wikipedia

   en.wikipedia.org/wiki/Dual-sport_motorcycle

   A dual-sport motorcycle is a type of motorcycle that is designed for varying degrees of off-road use while still being street-legal.Dual-sports are equipped with lights, a speedometer, mirrors, a horn, registration plates, turn signals, and a muffler with spark arrestor and decibel noise output to comply with government regulations.

7. Sound attenuator - Wikipedia

   en.wikipedia.org/wiki/Sound_attenuator

   A sound attenuator, or duct silencer, sound trap, or muffler, is a noise control acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces.