Porter's Standard Length Muffler
Body Length- 20" Overall Length- 26"
All Porter Mufflers are non-directional, allowing them to be mounted in either direction. Exhaust gas passes through the center of the steel spiral core with the sound dissipating into the stainless-steel packing preventing drone. Unlike glass-packed mufflers, our steel-packed mufflers will never break down.
Our mufflers are designed to create a slip fit lap joint with your mating exhaust tubing. We suggest welding this joint instead of using band clamps as it will perform better over the length of the muffler and create an air tight seal.
Created back in 1931, our first ever product, that has set the standard for the future of our company. To continue our tradition of quality each Porter Muffler is handmade using only the best heavy gauge and high quality steel products sourced in the U.S.A.
| Finish/Color | Straight |
Internal
Diameter of Inlet
|
Outside
Body Diameter |
Restriction Size/ Internal Diameter of Body Core |
Part Number |
| Ceramic-Painted Blue | ✓ | 1.75 | 3.5 |
1.375 |
PM35175 |
| Stainless Steel | ✓ | 1.75 | 3.5 | 1.375 | SSPM35175 |
| Ceramic-Painted Blue | ✓ | 2.00 | 3.5 | 1.375 | PM35200 |
| Stainless Steel | ✓ | 2.00 | 3.5 | 1.375 | SSPM35200 |
| Ceramic-Painted Blue | ✓ | 2.25 | 4.0 | 2.00 | PM40225 |
| Stainless Steel | ✓ | 2.25 | 4.0 | 2.00 | SSPM40225 |
| Ceramic-Painted Blue | ✓ | 2.50 | 4.0 | 2.00 | PM40250 |
| Stainless Steel | ✓ | 2.5 | 4.0 | 2.00 | SSPM40250 |
| Ceramic-Painted Blue | ✓ | 3.0 | 4.0 | 2.00 | PM40300 |
| Stainless Steel | ✓ | 3.0 | 4.0 | 2.00 | SSPM40300 |
Perfection is the only word here I can use.
Build quality is great. The stainless finish was
Mirror perfect. The sound is what is the most impressive. I have an Audi with a superchargedV6 I have tweaked to about 450ish hp. The rasp these engines produce is wild! After much research I found Porter Mufflers. They advertised no drone and that was my selling point. 100% correct. I have no drone and no rasp. That is insane for these cars!
Thank you so much for your review and kind words! We are thrilled to hear that our Porter Muffler has exceeded your expectations and helped improve the sound of your Audi. We truly appreciate your support and are grateful to have you as a customer.
My go to muffler every time. Every hot rod and every diy buyer we have get a set of Porters. Hands down the best muffler in the business.
-Spanky’s
Thanks for the great review, Spanky's! We're thrilled to hear that our Standard Length Muffler is your go-to choice for hot rods and DIY projects. Your satisfaction is our top priority and we can't thank you enough for choosing Porters.
I put this on my AMC 258 behind a high flow cat and it has a nice throaty burble when i get on the trottle but nice and reserved while idling. No drones on the highway.
Thank you Andrew for taking the time to leave a review!
Excellent quality
Thank you Charles!
Great sounding mufflers.
Thank you Scott for the review!!
