HomeShop by DepartmentPerformanceExhaustMufflersMBRP 4" Quiet Tone Muffler Resonator - Construction: Aluminized - Universal
Hot Seller
M1004A
mbrp-logo

MBRP 4" Quiet Tone Muffler Resonator - Construction: Aluminized - Universal

Thoroughbred Sku #: MBRM1004A
Manufacturer Sku #: M1004A

Item Options:

Prop 65:
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Shipping Restrictions:
This part is NOT available to ship to the state of California.


$244.99

free-shipping-no-handling

Call Us For Free Advice

(859) 737-4966

Call Us For Free Advice

(859) 737-4966
mbrp-logo

View More Products From

MBRP

Product Details

Product Name: MBRP 4" Quiet Tone Muffler Resonator
Manufacturer: MBRP
Manufacturer Part #: M1004A
Thoroughbred Diesel Part #: MBRM1004A
Fitment Notes: MBRP 4" Quiet Tone Muffler Resonator - Construction: Aluminized - Universal - 4" Inlet/Outlet, 30" Overall - M1004A

MBRP's Quiet Tone muffler resonator features a high flow spiral louvered core, fits most exhaust systems and is a direct replacement for all MBRP performance mufflers. With over triple the sound cancelling packing it eliminates drone under load or towing conditions and delivers up to a 10% dB noise reduction compared to a regular performance muffler.

4" Quiet Tone Muffler Features:

  • Dual core technology provides optimal flow in conjunction with superior sound suppression
  • Perfect for over the road towing applications as cab noise is greatly reduced
  • 4" inlet/outlet configuration that can replace any MBRP or competitor muffler in a 4" system
  • Over a full year of on road testing, this muffler works

Reviews

Submit a question

  • I have installed an mbrp installer series 4 in system on my F-150 with an EcoBoost gas engine will this muffler replace the standard muffler on that system to quiet my truck down

    Tom Fleming | 8/12/2020

    This is a 4" inlet and outlet. What is the part # of your kit?

  • Would this be able to be installed on the MBRP 4" straight pipe exhaust system?

    Kenny Clark | 4/21/2019

    This muffler will work with a 4” exhaust system provided that you have enough room to install it because it has a 30” overall length.

  • I have a Ram 2018 4th Gen. I have added the Banks Cold air, boost tubes, Monster Ram, Fass 100GPH and PPEI 60hp tow tune. I still have the factory emissions. There are times when I would like it a little quieter. Is this a recommendation for my truck with factory exhaust without defeating any add on?

    Kenny Sierra | 8/30/2025
    • Up to 10% dB reduction compared to regular performance muffler

  • I recieved this muffler a week ago. Took it out of the box today, it's not a spiral core,and louvers are same on both ends, going the wrong way. Mbrp says to install it so exhaust flows overvthe louvers ,that is impossible within muffler,as both ends have louvers going wrong way. Is this a piece of junk or what is up?

    James butler | 2/27/2023

    Please send in photo’s to our, [email protected] email address.

  • Will this work on a 4BT swap? Customer has a 1993 dodge 4BT in a old bronco. His complaint is the exhaust system he has on there now is way too loud, so I'm trying to find him something quieter.

    Ciera R Ronk | 11/19/2021

    Yes, if you have a 4”or 5” exhaust.

  • Does this product come with clamps or does it need to be welded onto pipes?

    kyle brauner | 3/12/2021

    Clamps not included. Welding not required.

  • Does it effect performance

    Frankie Nelson | 12/8/2020

    No, designed to quiet tones and retain performance.