• 15+ Years of Performance Parts, Tuning & Installation

Invidia [15-21 WRX CVT, 14-18 FXT CVT] Catted Downpipe/ J-Pipe | HS15SWADOC

  • Backed by real installs and tuning experience at FAST of West Chester
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The Invidia two-piece catted and cattless downpipes (AKA: J pipe) for the Subaru WRX have arrived! Once again Invidia has delivered excellently crafted performance exhaust components. Constructed of CNC mandrel bent 304 stainless steel tube TIG welded to cast stainless flanges, it's easy to see why Invidia has become one of the most popular exhaust brands we sell.

Both the catted and the cattless Invidia downpipes have three O2 bungs built in: Two for the factory sensors and one for an aftermarket wideband O2 sensor or EGT sensor. Because the catted downpipe uses a very high flowing catalytic converter, both the catted and the catless versions will improve exhaust flow and increase the power output of the FA20DIT WRX.

Installing an Invidia downpipe will require you to have your FA20DIT powered 2015 WRX tuned in order to avoid check engine lights and limp mode.

Invidia includes gaskets and hardware to connect the two pieces of their downpipe together and to your catback, but does not include new studs or a turbo-to-downpipe gasket.

Be aware: Many people have broken turbo-to-downpipe studs while removing their factory downpipe. We strongly recommend you do not attempt this install if you are not able to extract broken studs or are not prepared to replace some or all of the factory studs.

Notes:

  • Tuning REQUIRED
  • For off road use only
  • Fits ONLY CVT
    • Earn FAST points on this part!
    • Backed by real-world installs
    • FAST WC Team Approved

    Why Drivers Choose FAST of West Chester

    • I can't recommend this place enough. Being able to trust a shop in the performance world is big. The 2hr drive to get there, is worth knowing the job will be done right. Very happy to have found this shop, to
      support my builds going forward.

      Donald Wojnar

    • I recently had the pleasure of working with FAST of West Chester for some performance upgrades on my 2022 WRX, and the experience was nothing short of exceptional. I opted for a Borla S-Type exhaust and Cygnus Coilovers, and the team at FAST nailed the installation, fitment, and setup to a T.

      Adam Cranston

    • The team at FAST are excellence in every way. First, I consulted with Dave on mods for my HPDE track car. He listened and advised me on the best parts & mods to achieve my goals. He was patient & gave me space to research the options presented & worked with me through several changes before we built. Second, the build execution was flawless, proper heat shielding, bracing and poly everywhere. All components worked as advertised.

      Bryce Budd

    • This place has been my go to shop for all things Subaru. From simple service to performance parts and tuning, they have been top notch.

      William Brunell

    • Excellent shop. They installed a Cobb Stage 2 DP and Whiteline Sway bars and end links on my 2013 WRX. The work was done right and clean. The estimate was accurate. They were very knowledgeable, friendly and gave me the straight scoop on exactly what I was getting for the money
      and what I needed to get where I want to be with it. I'd recommend them
      to any car enthusiast.

      Devin Greco

    Does it come with a warranty?

    Most products we carry include a manufacturer warranty. Since we work with top performance brands, warranty coverage can vary by product. If you have questions about a specific item, reach out — we’re happy to help.

    Do you offer installation help or advice?

    Yes — we don’t just sell parts, we install and tune them too. FAST of West Chester is a real performance shop, and we’ve worked hands-on with many of the products we carry. If you have questions about fitment, installs, or building your setup, our team can point you in the right direction.

    How fast is shipping?

    Many of our products ship the same day or next business day, depending on availability. We work hard to get parts out fast so you can get your build moving without delays.

    What’s your return policy?

    Returns for exchange or refund are accepted within 30 days of receiving your order. Items must be in new, unused condition and in original packaging. If you have any questions, our team will help make the process easy.

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