Rumble Muffler 3in In/ 2.25in Out

The MagnaFlow Rumble Muffler 3in In / 2.25in Out (R20422) is a performance exhaust silencer engineered to reduce engine noise while maintaining backpressure characteristics suitable for street and light performance applications. Designed for 3-inch inlet piping systems, this muffler delivers the acoustic dampening expected from MagnaFlow's Rumble series while accommodating standard 2.25-inch outlet configurations for flexible exhaust routing.

MagnaFlow's Rumble line targets drivers seeking a deeper exhaust note without excessive volume—a balance that requires precise internal chamber design and perforated tube architecture. The 3-inch to 2.25-inch transition accommodates mid-size engine platforms and allows integration with existing exhaust systems or custom builds that prioritize outlet compatibility. At 10.25 lbs and measuring 21.13 inches in length, this muffler fits standard under-vehicle mounting points on most light-duty truck and SUV platforms where 3-inch primary piping is installed.

This muffler is intended for buyers upgrading factory exhaust systems who want measurable noise reduction combined with a sportier tone. The inlet/outlet diameter combination makes it particularly suited for V6 engines and smaller-displacement V8 applications where 3-inch primary tubes are standard. Installation requires basic exhaust work, including proper hanging brackets and clamp-style connections to both the preceding pipe and any downstream resonators or tailpipe extensions.

MagnaFlow performance exhausts are recognized across the aftermarket for manufacturing quality and acoustic tuning. The Rumble Muffler series specifically addresses the market segment between stock silencers (excessive restriction, flat tone) and aggressive performance mufflers (high drone, regulatory concerns). This SKU R20422 is a direct-fit option for systems already configured or being built around 3-inch primary diameter specifications.