MBRP M1031 4 inch Inlet/Outlet Muffler | Universal

Features:

• Universal fit with 4-inch inlet and outlet
• 24-inch body length, 30-inch overall length
• Constructed from T304 stainless steel
• Spiral louvered core accelerates exhaust flow
• High-density packing for long-lasting performance
• Fully welded design for extreme durability
• Delivers the classic MBRP deep exhaust tone
• Ideal for severe environments and show trucks
• Easy to clean and maintain
• Lifetime warranty with Pro Series construction
• Designed to replace standard 30-inch mufflers

Premium Muffler Upgrade by MBRP

When you want to upgrade your exhaust system with something that sounds aggressive but still keeps things refined, the MBRP M1031 4-inch Inlet/Outlet Muffler is a smart move. Built for serious enthusiasts who don’t want to compromise on sound, flow, or durability, this universal-fit muffler brings a perfect mix of performance and attitude to any diesel or gas-powered rig. At the core of the M1031 is a spiral louvered design that’s engineered to accelerate exhaust gases as they pass through. This helps reduce backpressure, giving you better throttle response and a noticeable bump in overall performance. It’s the kind of upgrade you can feel on the highway and hear every time you roll into the throttle.

High-Quality Construction & Design

Made from high-quality T304 stainless steel, this muffler isn't just built to perform—it’s built to last. The fully welded construction can take a beating from heat, vibration, and road grime without giving up, making it an ideal choice for trucks that see tough daily use, harsh climates, or just lots of miles. Whether you’re putting it on a lifted show truck or a heavy hauler that works for a living, you’ll appreciate how easily it cleans up and how well it holds its polished finish. The sound is everything you expect from MBRP: deep, aggressive, and unmistakable, but without crossing the line into obnoxious. Thanks to its high-density packing material, the M1031 smooths out the harshness without killing the tone you want in a performance exhaust. It’s a great fit if you want to turn heads without needing earplugs for the drive home.

Fits: Universal