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The Mishimoto engineers designed this WRX and STI cat-back exhaust as a four-piece design, comprised of 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 2015 WRX exhaust 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 rusty hardware!
- Direct fit for the 2015+ Subaru WRX & STI
- Mates with the Mishimoto, stock, or most aftermarket downpipes
- Made in the USA
- Mishimoto Lifetime warranty
- 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