Product Description
MBRP M1004S Quiet Tone Muffler delivers a refined sound with minimal in-cab drone while maintaining strong flow for towing and daily use. Built from T409 stainless steel for longevity in real-world conditions.
- Material: T409 stainless steel (Armor Plus)
- Dimensions: 4" inlet / 4" outlet • 24" body • 6" case diameter • 30" overall length
- Core: Chambered / dual-core quiet-tone design
- UPC: 882663113026
Fitment
Universal 4" exhaust systems for diesel and gas trucks using 4" tubing. Measure your existing system for hanger placement and available straight length (30" OAL) before installation.
Cross-Reference / Alternatives (MBRP-only)
- MBRP M1004A (Armor Lite Aluminized, same size)
- MBRP M1031 (T304 Stainless, 4" x 30")
- MBRP MDS30 (T304 Stainless Muffler Bypass Pipe, 4" x 30")
What’s Included
- (1) MBRP M1004S Quiet Tone Muffler, 4" in/out
Helpful Notes
- Center/center orientation typical for universal installs; verify your pipe routing.
- Use quality 4" band clamps or weld in for best seal.
FAQ
Will this reduce cab drone compared to a straight-through or delete pipe?
Yes. The Quiet Tone chambering is designed to cut drone while keeping flow for towing and daily driving.
Is T409 stainless good for winter/salt use?
T409 is a durable automotive stainless that can surface-rust but holds up structurally very well. For maximum cosmetic corrosion resistance, consider T304 options like M1031.
What size system does this fit?
Universal 4" systems. Confirm you have 30" of straight length and 4" tubing.
Do I need extra clamps or adapters?
If not welding, use 4" band clamps. Adapters may be needed if your system steps or offsets.
