The engineers at Mishimoto designed this cat-back as a four-piece design with precision TIG welded 304 Stainless Steel. This allows a smooth exhaust flow from the 3.0" 2-bolt exhaust flange all the way through the 2.25" y-section. To top it off, this cat-back includes two 2.25" V-Band clamps, a 3" exhaust band clamp, a new 3" 2-bolt flange gasket, and all stainless steel hardware, so you don’t have to worry about your hardware rusting ever again! Highlights:

• Direct fit for the 2015-2020 Subaru WRX & STI
• Extremely aggressive turbo and exhaust tone under acceleration and boost
• Designed with oval mufflers to prevent highway drone
• Installs in under an hour
• Quad 3.5" staggered double wall polished tips
• Full 304 stainless steel mandrel-bent construction
• Dyno-proven maximum gains of up to 9 whp and 8 wtq and peak gains of up to 4 whp and 3 wtq using 93 octane fuel while maintaining safe AFRs on the stock tune (2015 WRX w/ CVT)
• TIG welded to perfection
• 3" to 2.25" exhaust split helps maintain proper exhaust velocity
• Mates with the Mishimoto, stock, or most aftermarket downpipes
• Made in the USA
• Mishimoto Lifetime warranty

Give your 2015-2020 WRX or STI an Aggressive Exhaust Note

The Mishimoto Stainless Steel 3inch Exhaust System for the 2015-2020 Subaru WRX & STI cat-back exhausts allows your entire system to breathe easier, providing horsepower, torque, and a rich exhaust tone. Stainless steel construction, an easy install, and dyno-proven gains, these exhausts are Mishimoto's solution to your stock system's lack of aggressive tone with an added performance bonus.

Outstanding Build Quality

For a good balance of price and performance, Mishimoto’s Exhaust is constructed with high-quality SUS304 stainless steel, CNC-machined flanges, and manufactured with a polished finish. Each system features mandrel-bent stainless-steel piping for maximum exhaust flow and reduced back pressure. These exhausts are engineered to produce strong mid to top-end power gains, as well as an increase in horsepower and torque.

Fitment:

• 2015-2020 Subaru WRX
• 2015-2020 Subaru STI