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The aerofabb® Competition Series Rear Diffuser main plane
Sound absorption muffler
Supports higher RPMs to squeeze out more top end power
Delivers better road feel and feedback
APR Low Pressure Fuel Pump
APR 2.5" (63.5mm) Premium Sound Absorption Muffler E46 323i 2.5L I6 [M52] The aerofabb® Competition Series RearAPR's premium line of sound absorption mufflers are now available! Perfect for the do it yourself enthusiast fabricating a custom exhaust system, these mufflers tame your exhaust note and leave a pleasant growl that's sure to turn heads. Internally the system is filled with sound absorption material wrapped around a perforated 64. 5mm (2. 5") pipe. This is a straight through muffler design. There are no twists, turns, or baffles to slow exhaust flow.
