• 15+ Years of Performance Parts, Tuning & Installation

Invidia N1 Titanium Cat Back Exhaust WRX/STI 15-21 | HS15STIDTG

  • Backed by real installs and tuning experience at FAST of West Chester
Out of stock

Everyday Low Price:

$1,731.00
$1,731.00 $2,622.00 You Save $891.00!
Shipping calculated at checkout.

Get it fast — Order now.

I18n Error: Missing interpolation value "end_date" for "Ends on {{ end_date }}"
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Earn FAST WC Points on this order — redeem on your next purchase
Sorry, it's out of stock.

But we can let you know when it's back in.

Up to 34% offSold out

If you are looking to save weight, improve the performance, as well as the exhaust note all in one package, then you will be pleased with the Invidia N1 Twin Outlet Catback 80MM full titanium exhaust system! This exhaust system weighs just a little under 37 lbs, and there are many performance benefits to be had. Aside from the weight savings, this exhaust system has been designed with minimal bends to reduce exhaust turbulence under full throttle. This improves throttle response, and increased both horsepower and torque.

This exhaust system also has been designed with 80MM piping, which is large enough to flow moderate modifications such as a larger turbocharger, and increased boost. Best of all, this exhaust system is fabricated from titanium. The exhaust hangers are all welded to OEM like locations to allow this to be a direct-fit system with no extra alterations needed for installation. 

Additionally, new gaskets, hardware, as well as a pair of exhaust silencers are included to make this exhaust system ready to go. The tips will come in a titanium blue finish. 


Note: Are you using a stock j pipe or downpipe? If yes, the GrimmSpeed Subaru Stock DP to Aftermarket 3 in. Catback Adapter p/n 077046, is required.
  • 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.

Unlock 200 FAST Points Today!
Create your free account and get 200 FAST Points instantly.

🎉 Claim My 200 Points Now