Unleash custom exhaust flexibility with the MagnaFlow xMOD Universal Muffler (#14009). Designed for performance enthusiasts and builders, this modular muffler brings the power of MagnaFlow’s xMOD Series to any custom exhaust system—allowing you to easily tailor your vehicle’s sound and character with three interchangeable modules.
 
Built from premium 304 stainless steel, the #14009 features a 5” x 8” x 18” muffler body, a 3” inlet and outlet, and is produced using CNC precision robotic manufacturing for unmatched consistency and quality. No matter which module you use, this system is dyno-proven to deliver consistent performance, with the real difference being the sound.
 
Three Configurable Sound Modes:
NDT Module – For a refined, drone-free ride. This module uses MagnaFlow’s No Drone Technology and a quarter-wave resonator to cancel out unwanted cabin noise, while still delivering a sporty sound on throttle.
Muffler Module Cap – Covers the auxiliary port to route all gases through the muffler, delivering MagnaFlow’s signature deep and smooth tone.
xTreme Bypass Module – Opens the extra port for a straight-pipe experience with max volume and aggression. Recommended for track and off-road use only.
 
Swapping modules is quick and easy with the included band clamps, giving you full control over your vehicle's tone with zero compromises to performance.
 
Key Features:
Modular muffler with 3 distinct sound options
Fits custom builds with a 3" inlet and outlet
5" x 8" x 18" body for versatile fitment
Built from durable 304 stainless steel
Includes NDT, Muffler Cap, and xTreme Bypass Modules
Emissions legal (xTreme Bypass for track/off-road use only)
Band clamp system allows fast module changes
Backed by MagnaFlow’s Limited Lifetime Construction Warranty
 
Take full command of your build’s tone, comfort, and performance with the versatile xMOD #14009—one muffler, unlimited sound.