• 15+ Years of Performance Parts, Tuning & Installation

STM Axle-Back Exhaust for 2022 WRX

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

Everyday Low Price:

$449.00
$449.00
Shipping calculated at checkout.

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The STM axle-back exhaust / muffler delete for the 2022 Subaru WRX bolts directly in place of your stock muffler and weighs 15 pounds less than stock. Beautifully crafted in the USA, the STM axle-back features mandrel-bent tube and tig welded flanges with polished, dual 3.5" slanted, burned blue tips. All new mounting hardware is included along with two Remflex graphite gaskets for a leak-free install.

Vehicle Fitment:
2022 Subaru WRX
Fits all Base, Limited, Premium, 6-Speed manual and auto CVT

Features:
• STM Axle-Back weighs 11 pounds (5.50 each pipe)
• Factory mufflers weigh 26.5 pounds
• Saves 15.5 pounds
• 3.5" Quad Slanted Tips Burned Blue
• Fully Stainless Steel
• Mandrel Bent
• Tig-Welded
• Back Purged
• Stainless Steel
• Made in the USA!
• Lifetime Warranty on STM Parts to the original purchaser against manufacturing defects

What's it Sound Like?
This will give you that classic low rumble on idle with a nice growl at higher rpm's. Sounds great in the cabin, no droning and it even gave us a couple pops and burbles from an otherwise stock WRX. We will have some videos and dyno pulls posted on YouTube soon or check out Instagram #stm2022wrx

Includes:
(2x) STM Exhaust Pipes
(2x) 2.5" Remflex Gaskets
(4x) M10x30 Bolts
(4x) M10 x 1.5 Nuts
(4x) M10 Flat Washers

Shipping Times: 1-14 Days
Hand crafted and welded in New York, please give our fabricators time to assemble your piece!

See more STM Parts
See more STM Products
  • Earn FAST points on this part!
  • Backed by real-world installs
  • FAST WC Team Approved
STM Axle-Back Exhaust for 2022 WRX

$449.00

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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