Upower 4" Inlet Diesel Exhaust Muffler 7" x 24" Body 30" Whole Length XS2772 - Straight Through Stainless Steel Welded On Resonator Muffler

Cheap, effective and seems to be durable. Been on the truck over a month or so now and it doesn't have any noticable corrosion. It really quieted down the exhaust, that being said it still makes a little bit of noise. Install was super easy with some stainless clamps I purchased separately. Over all I would highly recommend for anybody looking to quiet down there truck .

This works depressingly well for the price. I put depressingly because I miss the deep loud sound of my 22 L5P. With that being said, it works great! No more drone from my 4" exhaust when pulling our trailers or cruising on the highway. You can still hear the exhaust and the turbo whistle, but it controls the drone and the whistle. The metal is thick enough to weld it on perfectly and the muffler looks good in place.

I bought this muffler to replace an MBRP Aluminized muffler that started falling apart at the seams. This UPower Stainless muffler is pretty much a direct fit for the MBRP 4" exhaust. The Inlet/Outlet pipes do not fit into the flanges of this muffler to the same depth that they fit into the MBRP muffler - they are about 3/4" shallower on both sides. This didn't bother my setup any because I was able to compensate for that with the hangers. It bolted right in using the existing MBRP exhaust clamps. This muffler is basically a stainless diesel glasspack. It is a good build quality. All the welds look precise and have good penetration. Despite being a glasspack, this muffler is significantly quieter than the MBRP muffler that it replaced. It has a nice, deep exhaust note, and eliminates the annoying "clackity" resonance that the MBRP had. The UPower also eliminated most of the turbo and blowoff noise with the exception of the quiet whine from under the hood. I consider this to be a very good value muffler given the price point. I am currently quite satisfied with it.

Muffler seems to be of quality and the welds are clean. I replaced my original muffler from my MBRP 4 inch from the turbo back system that rotted out, it's a touch quieter which I don't mind and actually enjoy. Throttle response and deacceleration is exactly the same as it was before Just a little quieter.

Seems quality : came with a clear coat of some kind on it. On my 6.7 deleted truck it's not doing much for low frequencies. Truck is quiet but boomey. Not much drone but not eliminated either. Good for the price but don't expect miracles here : it's just a straight through muffler.

Perfect to tone down a 6.7 straight pipe Cummins without making it too quiet. Great for living in a neighborhood and not disturbing everyone. High idle with the exhaust brake on, it’s still a little too loud for early morning neighborhood warmups.

Appears to be good quality, arrived well packaged and undamaged. Installed easy and quieted my 6.4 diesel up almost too much! Very happy and would buy again.

I have a 6.0 Powerstroke Excursion that came with a straight 4-inch exhaust. At over 40 years of age, the sound was just too much for me. Luckily, I was able to remove an old section and slip this one on—installation was incredibly easy. The difference is night and day! Now the engine makes all the noise, with just a muffled exhaust and faint turbo whistle. Exactly what I was looking for. Like my vehicle a bit more now.

I bought myself a full 4" performance exhaust system on Amazon expecting it to be a bit louder than stock. Turns out it was obnoxiously loud and something had to be done. I saw this muffler and the great reviews so I thought I would give it a try. Wow, it makes a huge difference. Much quieter but still nice and throaty. No restrictions either so it wont rob you of any power. Gotta say that I just love it. It wont disappoint.

I do not write reviews much this product for the price works awesome for my deleted 6.7 cummins dodge ram 2500 2015. Sounds just like factory and not loud and won't upset my nabours anymore. Very happy.

Works perfect and takes the obnoxious noise away and makes it sound good.

appears to be decent quality, sound is nice, might not be loud enough if you're a billy big rigger wannabe (although you will not drive your neighbours crazy). stainless is questionable, magnet will not stick anywhere.

Make the Cummins delete nice and quiet.