3" is the way to go when talking downpipes. The Mishimoto 2014-2017 Fiesta ST downpipe is 3" from the turbine outlet flange all the way to the 2-bolt exhaust flange. Maximizing flow and reducing backpressure is the key to unlocking power in any turbocharged vehicle. The reduced backpressure speeds up turbo spool to drop the boost threshold lower in the rev range. To boost the size of your entire exhaust system, pick up the Mishimoto 2014-2017 Fiesta ST Cat-Back Exhaust for most impressive results. Full 304 stainless steel construction prevents corrosion and eventual failure that plagues aluminized steel systems. The 3" turbine to downpipe flange is CNC-machined for a leak-free connection and easy installation. Next in line on this 2014-2017 Fiesta ST downpipe is the high-flow catalytic converter, which frees up some airflow when compared to the beefy stock equipment. Just in case you wanted to keep your stock cat-back system, this 2014-2017 Fiesta ST downpipe bolts effortlessly to the stock system or any aftermarket exhaust with a 2.5" mid-pipe!

Mishimoto continues to expand on our line of performance exhaust system components! After months of development and testing, Mishimoto has released the stainless steel downpipe for the 2015+ Ford Mustang EcoBoost! This downpipe was designed with maximum exhaust flow in mind, using 3"" mandrel-bent stainless steel tubing. This downpipe will easily outflow the stock restrictive piece, and allow your 2015+ Ford Mustang EcoBoost to make maximum power and torque! With this downpipe installed on our 2015+ Ford Mustang EcoBoost and the ECU re-flashed with a more aggressive tune, the engine was able to make an additional 65whp and 108wtq over stock with our catted downpipe installed. With the Mishimoto catless downpipe installed, we produced additional gains of 9.8 whp and 8.3 wtq over the catted model, making this a great option for those seeking maximum power output. The Mishimoto downpipe was also designed to be easy to install, as well as adaptable to many exhaust configurations. We know there are many choices out there for cat-back exhausts, and the included 3.0"-2.25" adapter allows easy mating to the stock exhaust or most aftermarket cat-back exhausts with the stock-sized 2.25" mid-pipe. The adapter can also be omitted, so the downpipe has a 3.0" V-band outlet to mate up to a custom exhaust, or the upcoming Mishimoto Cat-Back Exhaust to make a full 3" downpipe / mid-pipe combination. The two-piece downpipe design allows for an easier installation without wrestling a large bulky pipe into place. The Mishimoto downpipe comes with all of the necessary clamps and flanges you'll need for installation, and mates perfectly to your stock turbo gasket, making the need to purchase additional gaskets or hardware unnecessary! Like all of our EcoBoost Mustang parts, this downpipe comes with the Mishimoto Lifetime Warranty!

Mishimoto continues to expand on our line of performance exhaust system components! After months of development and testing, Mishimoto has released the stainless steel downpipe for the 2015+ Ford Mustang EcoBoost! This downpipe was designed with maximum exhaust flow in mind, using 3" mandrel-bent stainless steel tubing. This downpipe will easily outflow the stock restrictive piece, and allow your 2015+ Ford Mustang EcoBoost to make maximum power and torque! With this downpipe installed on our 2015+ Ford Mustang EcoBoost and the ECU re-flashed with a more aggressive tune, the engine was able to make an additional 65whp and 108wtq over stock with our catted downpipe installed. With the Mishimoto catless downpipe installed, we produced additional gains of 9.8 whp and 8.3 wtq over the catted model, making this a great option for those seeking maximum power output. The Mishimoto downpipe was also designed to be easy to install, as well as adaptable to many exhaust configurations. We know there are many choices out there for cat-back exhausts, and the included 3.0"-2.25" adapter allows easy mating to the stock exhaust or most aftermarket cat-back exhausts with the stock-sized 2.25" mid-pipe. The adapter can also be omitted, so the downpipe has a 3.0" V-band outlet to mate up to a custom exhaust, or the upcoming Mishimoto Cat-Back Exhaust to make a full 3" downpipe / mid-pipe combination. The two-piece downpipe design allows for an easier installation without wrestling a large bulky pipe into place. The Mishimoto downpipe comes with all of the necessary clamps and flanges you'll need for installation, and mates perfectly to your stock turbo gasket, making the need to purchase additional gaskets or hardware unnecessary! Like all of our EcoBoost Mustang parts, this downpipe comes with the Mishimoto Lifetime Warranty!

Downpipe and the Mishimoto 2015+ Ford Mustang EcoBoost Cat-Back Exhaust? This 3.0in adapter eliminates the restrictive 2.25in center section that is the result of joining some aftermarket downpipes and cat-backs. The Mishimoto 2015+ Ford Mustang EcoBoost Exhaust Adapter is made a 304 Stainless Steel that will not rust in harsh climates and installs in under 30 minutes. This adapter perfectly complements the V-band flange on the Mishimoto downpipe and the 3in band clamp on the Mishimoto cat-back exhaust. And like all Mishimoto 2015+ Ford Mustang EcoBoost parts, this Adapter comes with the Mishimoto Lifetime Warranty.Looking for a smooth transition between the Mishimoto 2015+ Ford Mustang EcoBoost Downpipe and the Mishimoto 2015+ Ford Mustang EcoBoost Cat-Back Exhaust? This 3.0in adapter eliminates the restrictive 2.25in center section that is the result of joining some aftermarket downpipes and cat-backs. The Mishimoto 2015+ Ford Mustang EcoBoost Exhaust Adapter is made a 304 Stainless Steel that will not rust in harsh climates and installs in under 30 minutes. This adapter perfectly complements the V-band flange on the Mishimoto downpipe and the 3in band clamp on the Mishimoto cat-back exhaust. And like all Mishimoto 2015+ Ford Mustang EcoBoost parts, this Adapter comes with the Mishimoto Lifetime Warranty.