SKU: 39018444384

Cat-Back Exhaust Subaru WRX/STi 2015+

Sale price$1259.97 Regular price$1399.97
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Cat-Back Exhaust Subaru WRX/STi 2015+Here at Mishimoto we've decided to expand our line of 2015 Subaru WRX performance parts. Mishimoto is proud to release the 2015+ Subaru WRX STI cat back exhaust. One of the biggest complaints 2015 WRX owners have is that the stock 2015 WRX exhaust systems lack an aggressive tone. By installing the Mishimoto 2015 WRX cat back exhaust allows the entire system to breathe easier, providing horsepower, torque, and a rich exhaust tone. After comparing many

Here at Mishimoto we've decided to expand our line of 2015 Subaru WRX performance parts. Mishimoto is proud to release the 2015+ Subaru WRX/STI cat-back exhaust. One of the biggest complaints 2015 WRX owners have is that the stock 2015 WRX exhaust systems lack an aggressive tone. By installing the Mishimoto 2015 WRX cat-back exhaust allows the entire system to breathe easier, providing horsepower, torque, and a rich exhaust tone. After comparing many different muffler sizes and designs, Mishimoto engineers chose oval mufflers to help prevent highway drone but still provide an aggressive exhaust tone for your 2015 WRX. During dyno pulls with the 2015 CVT WRX, Mishimoto saw gains of up to 9 whp and 8 wtq using 93 octane fuel while maintaining safe AFRs on a stock tune (see additional images for dyno chart). This 2015 WRX exhaust installs in under one hour and features quad 3.5" staggered, double wall polished tips. The Mishimoto 2015 WRX cat-back exhaust provides an extremely aggressive turbo and exhaust tone under acceleration and boost, giving you that sweet tone you've been looking for!

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! For 2015 WRX or STI owners looking to get the most out of their WRX, this 2015 WRX cat-back exhaust mates perfectly with the Mishimoto Subaru WRX Performance Downpipe. The Mishimoto Subaru WRX Cat-Back Exhaust is proudly made in the USA and, like all our 2015 WRX parts, comes with the Mishimoto Lifetime Warranty.

  • 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
  • Note - This product has been designed to fit both manual and CVT transmission vehicles.
  • Mishimoto does not recommend installing this cat-back exhaust and the Mishimoto Performance Air Intake with the stock ECU programming. It is recommended that the customer is able to retune the vehicle’s ECU after installing the cat-back exhaust and the intake. Power gains will vary depending on the type of ECU tune that is applied to the vehicle.
  • Fits - 2015+ Subaru WRX, 15+ Subaru STI
  • Engine Codes - FA20DIT, EJ257
  • Chassis Codes - VA, GH
  • Weight - 42 lbs
  • Diameter - 3.0" from 2.bolt flange to y-section 2.25" y-section to mufflers
  • Flange Material - 304 Stainless Steel
  • Pipe Material - 304 Stainless Steel
  • (1) Stainless Steel Mid-Pipe w/ 2-Bolt Flange
  • (1) Stainless Steel Mid-Pipe to Y-Section
  • (2) Stainless Steel Mufflers w/ Quad 3.5" Staggered Double Wall Tips, Polished
  • (2) 2.25" V-Band Clamps
  • (1) 3" Exhaust-Band Clamp
  • (1) 2-Bolt Flange Gasket
  • (2) 3/8"-16, 1-1/2" Hex Bolts, Stainless Steel
  • (2) 3/8"-16 Serrated Flange Hex Nuts, Stainless Steel
  • (2) M10 Washers, Stainless Steel
  • Mishimoto Lifetime Warran
  • Direct fit for the 2015+ 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
  • (1) Stainless Steel Mid-Pipe w/ 2-Bolt Flange
  • (1) Stainless Steel Mid-Pipe to Y-Section
  • (2) Stainless Steel Mufflers w/ Quad 3.5" Staggered Double Wall Tips, Polished
  • (2) 2.25" V-Band Clamps
  • (1) 3" Exhaust-Band Clamp
  • (1) 2-Bolt Flange Gasket
  • (2) 3/8"-16, 1-1/2" Hex Bolts, Stainless Steel
  • (2) 3/8"-16 Serrated Flange Hex Nuts, Stainless Steel
  • (2) M10 Washers, Stainless Steel
  • Mishimoto Lifetime Warranty
  • 2015+ Subaru WRX
  • 2015+ Subarru STI
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 39018444384

    Discover Niche Categories That Outsell

    Top-Converting Item to Boost Your Average Order

    4.4 ★★★★★
    Based on 1085 reviews
    Sort
    Highest Rating
    Newest First
    Oldest First
    Product Reviews
    A
    Ashley G.
    Lexington, US
    ★★★★★ 3
    Not your average Billionaire's Nanny
    Format: Kindle
    A unique twist on a Billionaires Nanny plot. I was immediately drawn into the story and it kept me guessing on how it would unfold. The chemistry between Tessa, Damien, Theo and Nico was HOT. The spicy scenes were intense and everything you would expect from a Cassie Cole book. I had a difficult time connecting with Tessa. Some of her actions and unexplained entitlement to know everything going on around her seemed off to me but Theo was my absolute favorite.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on October 7, 2025
    B
    Verified Purchase
    Brooke
    Pawtucket, US
    ★★★★★ 5
    Hot tamales!
    Format: Kindle
    So Nico, using food as his love language. Damien, stoic and mysterious. Theo strong and constant. All revolving around Tessa, whose more than just a nanny. Absolutely loved it. Steamy and packed with awe and wonder as they travel the world in the name of art. Couldn't put the story down.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 27, 2026
    E
    Epicus Doomicus
    Alexandria, US
    ★★★★★ 4
    Entertaining Sweet and Steamy Billionaire RH Romance🔥❤️🔥
    Format: Kindle
    In this entertaining sweet and steamy,billionaire, RH romance Tessa is working as a server at a party for the Hawthorne Conservancy where she meets a cute little girl Tabitha who is going to change her life. After the party Tabitha can't stop talking about Tessa so her father Damian who's a billionaire takes it upon himself to just show up with no warning. The purpose of the surprise visit is to offer Tessa the job as Tabitha's nanny which she really has no chance of refusing. Once Tessa accepts the job she meets Nico the chauffeur as well as Theo the head of security Damian,Nico and Theo go everywhere and do everything together. What Tessa thought was going to be a simple nanny job has turned into so much more. I don't want to say anymore and ruin it for anyone else with spoilers. You really need to read this entertaining, sweet and steamy, billionaire, RH romance to see what happens. I would recommend reading this book. I received a free copy of this book via Booksprout and am voluntarily leaving a review.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on October 11, 2025
    K
    Kimie611
    Waukegan, US
    ★★★★★ 3
    Just okay
    Format: Kindle
    This is the second book from this duo I’ve read. And I just can’t get into it. Like Cassie Cole books. Sasha Moon is new to me. This book has a decent storyline. Intrigue. Exotic places. Dangerous underworld. Tessa is plucked from her waitressing job to nanny for Damien. The billionaire art mogul and his 2 friends. They are deep into a new project that they call the Legacy Collection. She’s whisked around the world as she Nanny’s for the billionaire. My problem is that I just do not like Tessa. She’s quickly inserting herself into business she knows nothing about. Creeping around places she shouldn’t be and the billionaire and his security is okay about it. A slight talking to and that’s all. I like a strong female character, but she was often a brat. She just wasn’t likable to me. She was tolerable once they arrived in Greece, but I was too far gone at that point. Good level of spice. The scenes were hot. The guys were likable. Overall, I couldn’t wait to finish it but I found myself often putting off picking it up
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on October 10, 2025
    K
    KE
    Belleville, US
    ★★★★★ 5
    Great Story!!
    Format: Kindle
    This was a great story however, it did seem a little short. Maybe a little rushed, but that could also be because I wanted a little more development of the characters as a family :). Also, I love how this story doesn’t seem like there are two different authors! Whew :). I love that!!! The only real criticism I have is that there are too many characters with names that start with the letter “T” and it makes reading the story a little confusing.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on December 9, 2025

    recommand products