●Aluminium construction --Aluminized steel construction and internal drainage system for maximum durability,Internal partitions with the change of temperature, the deformation is reduced by thermal expansion and cold contraction ●Noise reduction performance--Factory-style using aerodynamics sound absorbs unwanted interior resonance to reduce radiated noise,dual inlet muffler OE-style domed heads make the noise lower ●Performance 2.5 muffler-- Internal partition wall and high quality material make it have the characteristics of high temperature resistance,Factory-style Welded structure provide stability and longer service life ●Performance 2.5muffler size--Dul 2.5inlet Dul 2.5outlet| Body Length: 17"| Overall Length: 23"| Body Height: 4" | Body Width: 9.5" | Inlet: 2.5" ID ●Adaptability-This dual in dual out muffler universal 2.5 inch muffler is fit on most vehicles, 3 chamber muffler only requires clamps or welding for installation.