Product Description
MBRP MDDS927 is a universal dual muffler bypass built from rugged 16-gauge T409 stainless (Armor Plus) to cut backpressure and sharpen exhaust tone. It replaces a dual 4" muffler section with a straight-through 27.5" assembly for maximum flow while retaining durability.
Fitment
- Universal 4" exhaust systems (dual configuration)
- Exclusions: Not for 6.4L Ford, Chevy LMM, or 6.6L Dodge applications
- 4" inlet / 4" outlet, 27.5" overall length
- Material: T409 stainless steel (Armor Plus)
Cross-Reference / Alternatives (MBRP-only)
- MBRP MDS930 – 4" Muffler Bypass, Armor Plus (T409), 30" overall
- MBRP MDS30 – 4" Muffler Bypass, Armor Pro (T304), 30" overall
- MBRP MDA30 – 4" Muffler Bypass, Armor Lite (Aluminized), 30" overall
- MBRP MDA531 – 5" Muffler Bypass, Armor Lite (Aluminized), 31" overall
- MBRP MDS9531 – 5" Muffler Bypass, Armor Plus (T409), 31" overall
Why Armor Plus (T409)
Armor Plus uses corrosion-resistant T409 stainless that’s tough enough for winter salt, gravel, and daily use—backed by a lifetime structural warranty.
Helpful Notes
- Professional welding/fabrication may be required on “universal” installs
- Check local laws before modifying sound emissions
FAQ
Will MDDS927 fit my truck without modification?
It’s a universal dual 4" section, so trimming and welding may be required. It does not fit 6.4L Ford, Chevy LMM, or 6.6L Dodge applications.
What’s the difference between Armor Plus, Armor Pro, and Armor Lite?
Armor Plus is T409 stainless (great value + corrosion resistance). Armor Pro is premium T304 stainless. Armor Lite is aluminized steel for budget-minded builds.
How loud is a dual muffler bypass compared to stock?
Expect a deeper, more aggressive tone and more in-cabin presence than a factory muffler—tone varies by turbo, pipe routing, and tip setup.
Does MBRP back this with a warranty?
Yes—Armor Plus products carry a lifetime structural warranty against defects in materials and workmanship.
