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Your cart is empty.The quiet tone muffler is made of Aluminized construction. 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.
micheal
2025-08-17 18:33:32
I bought a 2015 ram that was straight pipe. It was too loud so I added this muffler now it’s perfect.
Chris David
2025-08-16 13:18:31
My 2006 Dodge 5.9 Cummins has had 4 inch straight pipe on it for the last few years. It's not my daily driver. Kinda fun around town, but after 2 hours of towing heavy trailers it gets really rough on the ear drums, so I bought my truck the MBRP for Christmas. Wow what a difference. First thing I noticed is how much smoother the engine sounds. It's across the board a more pleasant experience: In the cab, standing next to it while idling, windows down while on the throttle next to block wall...I'd say it's about 3-3/8" clear ID through bore. In addition to that arrayed around the ID are 3/8" tall nozzles that channel some of the gas into the expansion chamber. Effective flow area is that of about a 4 inch pipe. The picture makes it appear that each row is taping down to a smaller ID, but this is due to foreshortening of the image. Each successive row appears to be the same final inside diameter as the first row. The muffler is non-directional (same on both sides). 30 inch OAL, and 6 OD of the quieting chamber.Also the chamber is hollow. There is no noise damping media inside it.Still sounds and flows WAY better than a stock 5.9 Cummins
dave
2025-08-08 12:28:46
I have a 6.0L powerstroke with 4" turbo back. The quiet tone muffler was easy to install as I just swapped with the standard MBRP muffler that came with the exhaust kit. Muffler is same length at connections and same diameter as standard MBRP muffler, but quiet tone muffler portion is about 4" longer is all. This exhaust still has a throaty sound at acceleration, but got rid of the loud thumping rumble. Also no drone sound at freeway speeds. I really like the mufflers tone and would recommend it, especially if you tow a lot. I did give it 4 stars however due to workmanship. There were particals that rattled inside of the muffler that I could not remove. However, everything visually including exterior welds looked to be good.
Tyler
2025-07-28 10:24:33
Good construction, and perfect fit. I installed onto my 2010 Duramax. I definitely helped quiet down the 4†exhaust. It still has a nice mellow sound outside the truck. But not obnoxious like the straight pipe. No complaints though! I paired it with a 17†FTE resonator and it’s quiet as stock inside the cab. Which is what I was going for.
Brian B.
2025-07-27 10:49:04
This eliminates the crackle of a diesel exhaust when on the accelerator pedal. It also eliminates to droning at highway speeds, while maintaining a nice whistle sound. This muffler is not coated, nor is it stainless. It will begin to look ugly over time.
Guy j.
2025-07-07 12:09:31
fit great sounded good
Janet Raymond
2025-06-20 20:25:16
Great item
Peter J Jankowiak
2025-05-26 12:11:03
Got this muffle for one reason only and that was to get rid of the drone I was getting. It worked like a charm, still has a good tone to it without having to yell to talk inside my truck. Only thing I'm bummed on is on the strait pipe system from these guys the muffler delete pipe has hangers this one doesn't so everything seems slightly less secure. Still would buy again.
Carl Saulnier
2025-05-11 18:07:38
J ai installé 1x j ai une ligne 4 pouces et un kit turbo 2 gen et j en ai rajouter un 2 iem et ses comme d origine mais un peu plus loud 🤙
Don
2025-04-29 13:37:35
This item did what it was meant to do
Elda Wlasichuk
2025-04-14 15:00:06
The muffler on my 2010 duramax sounds the same as the factory muffler. Very quiet in the cab and no drone at all. I tried it with the straight pile and at 1500 rpm’s there was a low drone sound. Once the muffler was added it was gone can only hear the engine purr and the tires. When you start the vehicle it has a lower noise but sounds good and you can hear the turbo. I would buy it again and recommend it to anyone who wants to quiet their truck down. Very happy with the purchase.
Robert Frew
2025-03-21 13:04:53
Installed on 5.9 cummins, it sure knocked some Dcb out of the exhaust. But not quiet. However I did install one on a 6.7 Powerstroke and it worked great.
Big k
2025-02-19 15:45:32
Purchased a mbrp exhaust system. It was way too loud and drones. I purchased this muffler to tone down the sound and drone. Worked great and sounds good.
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