Autotecnica 409 Stainless Steel Mandrel Bent Resonator/Muffler Delete Eliminator X-Pipe
Suitable for Ford Mustang GT V8 2015-2019

This mandrel bent, stainless steel muffler delete eliminator pipe replaces your complete standard resonator section and connects up to the original rear muffler sections. Supplied complete with new clamps.

Changing the exhaust is typically one of the first mods to be done on the 2015-2019 GT Mustang to bring out a more pronounced, louder and deeper exhaust tone. With the stock resonator on the Mustang, the exhaust tone is greatly muted, and performance is impacted. This Autotecnica 409 Stainless Steel Muffler/Resonator Delete X-Pipe will open up your Mustang’s exhaust flow and let that V8 motor Roar.
 
Autotecnica constructed this X-pipe from high-grade 409 steel for long lasting durability and resistance to corrosion. Mandrel bending of the pipes provides smooth bends for maximum exhaust flow while reducing back pressure. The more open design of this X-pipe brings out a throatier, race-inspired exhaust tone. With included hardware for an easy installation, this resonator delete X-pipe from Autotecnica is an easy and quick way to improve your Mustang’s performance and sound!

Featuring full mandrel bent piping in the system which results in no weak spots or thin sections, whilst optimizing exhaust flow and engine performance. A mandrel is a steel rod or linked ball that is inserted into the tube whilst it is being bent, which gives the tube extra support to reduce wrinkling and also prevents breaking the tube during the bending process.
 
The Autotecnica muffler delete X-pipe is an affordable way to increase performance, gain better economy and get a louder sound, without going to the huge expense of a full exhaust system.
 
Specifications:
What you get:
We supply everything you need to fit this part to your car, so you don't have to waste your time chasing up extra components. Nothing else is required for a complete installation.
 
Fitment notes:
 
Why choose 409 grade Stainless Steel?
409 Stainless Steel is designed to stretch and flex from the normal tension loads generated by heat stress and engine vibration.
409 Stainless Steel is the best choice for your exhaust.  409 offers the best combination of long life, corrosion resistance and heat cycle endurance. This is proven by the fact that almost all vehicle manufacturers today specify 409 for their factory exhaust systems.

Aluminized Steel vs 409 Stainless Steel. Which is better?
Both aluminised steel and 409 stainless steel are excellent products for automotive exhaust applications. Both offer excellent heat resistance and both can be easily welded. 409 offers more corrosion resistance than aluminised. Aluminised steel is mild steel that has been coated with an aluminum coating. Because the corrosion resistance of aluminised steel is only a coating it can be damaged, but the corrosion resistant properties of 409 stainless are inherent throughout the metal.

304 Stainless Steel vs 409 Stainless Steel. Which is better?
409 is a titanium stabilized ferritic stainless steel which means that it is a steel alloy containing chromium. It contains less nickel and more carbon than 304 stainless steel. Ferritics are best suited for high temperature applications that require corrosion resistance and high strength. The principal use of 409 stainless steel is automotive exhaust systems and most catalytic converter shells are made of 409. More workable and stable than 304, 409 will accept bending and heat cycling better than 304. It resists both atmospheric and exhaust gas corrosion. It is magnetic due to its higher carbon content. Through chemical reaction, it oxidizes to a slight brownish hue which aids in corrosion resistance. While it does not polish well, it offers the advantages of higher strength and longer life due to its heat handling qualities. Be sure to ask for 409 Stainless for your exhaust system to get the best combination of both long life, corrosion resistance and heat resistance.

If this is stainless steel why is it magnetic?
It is commonly believed that stainless steel is not magnetic. This is true of grades of stainless that have a high content on chromium (such as 304 or 316 stainless steel) but 409 grade stainless steel is magnetic due to its higher carbon content.

I can see a tan or brown on the 409 stainless. Is that rust?
No. Through chemical reaction, 409 sometimes oxidizes to a slight brownish hue this actually aids in corrosion resistance. Under normal operating circumstances 409 will never rust out like mild steel.