16-PIECE KIT: We provide four 46-inch lengths of straight pipe for the main pipe to run along with four lengths of each bend type: 90-degree, 45-degree, and 180-degree u-bends. 16-gauge mild steel tubing with .065-inch wall thickness for easier welding., CUSTOM SYSTEM: Bends allow you to fabricate the optimum dual system routing around cross-members and over your rear axle simply by measuring, cutting, and welding the bend sections as required. Mandrel bent tubing maintains inside diameter throughout pipe flow path., SLIP-FIT INSTALLATION: Each smooth mandrel bent tube is expanded on one end to allow easy slip-fit installation., PREMIUM CONSTRUCTION: 16-gauge mild steel pipes feature a natural, anti-rust coating for corrosion prevention. Oil coating is applied to prevent corrosion after ma 2.5 Inch Dual Exhaust Pipe Tubing Mandrel Bend Kit, Mild Steel Sku # 91013824 Mfr. Part # 91013824 Condition New Brand Speedway Motors Sold Each Details
- 2-1/2-inch 16-gauge mild steel tubing with .065-inch wall thickness for easier welding
- Mandrel bent tubing maintains inside diameter throughout exhaust pipe flow path
- All tubing can be cut and easily welded at any bend radius due to mandrel bending process
- Oil coating applied to prevent corrosion after manufacture that delivers clean, ready to weld tubing
- Once cut and welded it is recommended to use high-heat paint or ceramic coating to protect exhaust
- Each tubing piece includes an expanded end for easy slip-fit installation
- Complete universal dual exhaust kit includes 16 pieces of tubing to build a complete custom exhaust system
- Dual exhaust kit does not include mufflers, clamps, hangers, or any finished tips
- Bent exhaust tubing features a 3-3/4-inch bend radius on all pieces
Design Your Own Exhaust System with Our Complete Header Back Exhaust Kits
Many builders look at the exhaust portion of a project build with skepticism and disdain. It is normally one of those aspects of a project where you know it is going to entail delivering your project vehicle to an exhaust fabricator and having a complete header to tailpipe custom exhaust system built at great expense. It is even more fun when you do not own a truck and trailer to transport said vehicle yourself too! However, we are here to tell you that you can indeed fabricate your own custom exhaust right in your home garage or workshop with ease using one of our complete dual exhaust pipe kits we offer here at Speedway Motors. All it takes is a welder, something to measure and cut the piping with, and a little bit of exhaust pipe system routing forethought to accomplish.
Heavy Wall 16-Gauge Tubing for Easy Welding and Fabrication
We start by spec’ing .065-inch thick 16-gauge mild steel tubing for our mandrel bent exhaust pipe kits. This steel is easier to weld by far when compared to standard 18-gauge steel normally used for exhaust tubing. The thicker gauge material provides “forgiveness” when welding if your welding machine settings are not spot on, making it easier for novices with basic 110-volt MIG welders to weld up the perfect custom exhaust system. We provide four 46-inch lengths of straight pipe for the main exhaust pipe run along with four lengths of each bend type: 90-degree, 45-degree, and 180-degree U-bends. These bends allow you to fabricate the optimum dual exhaust system routing around crossmembers and over your rear axle simply by measuring, cutting, and welding the bend sections as required.
Just Add Mufflers and Hangers to Complete Your Exhaust
Our mild steel universal dual exhaust pipe kits are available with or without our welded steel 2-chamber performance mufflers. This kit utilizes 2-1/2-inch exhaust tubing and ships sans muffler assemblies so that you can choose the exact muffler to fit your chassis and desired sound and performance levels. You can find this 2.5\" exhaust pipe kit Mild Steel 2-1/2-inch Dual Exhaust Kit With Mufflers along with exhaust installation accessories including Exhaust System Hangers and Accessories and Exhaust System Tips on our site. Be sure to have a quick read of our Performance Muffler Buyer\'s Guide over on our Toolbox page to aid in choosing the right muffler for your project.
Extra Exhaust Tubing is Just a Call or Click Away
Sometimes we measure twice, cut once, then cut again, and still come up with the short end of the stick, or in this case, exhaust pipe. Have no fear, Speedway Motors offers individual replacement angle tubing and additional lengths of straight tubing in case you have a project with a long wheelbase like a station wagon, panel van, or other unique scenario. If you know what you need you can order these along with your hot rod DIY exhaust kit, otherwise, know these parts are ready to order to get you fixed back up and your exhaust project finished in no time if you make a mistake with your exhaust fabrication.
45-Degree Mild Steel Bend
90-degree Mild Steel Bend
180-degree Mild Steel Bend
46-inch Length Mild Steel Straight
Dual Exhaust H-Pipe Balance Tube
Specs Exhaust System Type Header-Back Single or Dual Dual Muffler(s) Included No Exhaust Tip Included No Exhaust System Material Mild Steel Exhaust System Finish Natural Exhaust Pipe Color Natural Mount Type Universal Tailpipe Diameter 2.5" Mandrel Bent Yes Wall Thickness .065" Catalytic Converter(s) Included No Hardware Included No MFG. Part # 91013824 Sold in Quantity Kit Notes No clamps or hangers are included Exhaust Tubing Diameter 2-1/2 Inch Material Type Mild Steel Exhaust System Kit Type DIY Universal Reviews Yes Rated by N/a on July 08, 2026
Summary: Dems worked good
Yes, I recommend this product.
I would buy again Rated by Rat rod on May 22, 2026
Summary: Great kit made it very easy on me
Yes, I recommend this product.
Great kit, easy to work with Rated by AdamC on April 07, 2026
Summary: I bought this kit to build an exhaust for my jeep. I know this site doesn't cater to offroad stuff but custom is custom. With the provided tubing, I was able to make something work quick and easy. Will buy the same kit again when I need to build another exhaust for another project
Yes, I recommend this product.
Once is good thanks Rated by Frozen Mopar on April 01, 2026
Summary: Good complete kit, seems like quite good quality steel. Nice oily coating to keep it clean.
Yes, I recommend this product.
I would buy again, lots of pipe Rated by D.C on March 14, 2026
Summary: I wanted to build my own mandrel bent exhaust. This kit comes with more than enough pieces. It is not aluminized, it is raw steel but comes coated n a grease to stop from rusting before fabrication.
Yes, I recommend this product.
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