STM WRX/STi 2015-2020 Axle-Back to Cat-Back Upgrade

If you've already invested in the STM Axle Back Exhaust, you can enhance your setup by purchasing the remaining components of the cat-back system separately for a comprehensive upgrade! This setup should also be compatible with many other aftermarket axle-back exhausts featuring a 2.5" flange and bolting to stock locations, but it's advisable to confirm compatibility before making a purchase.

The STM Stainless Steel Cat-Back Dual Exit Exhaust for the 2015+ WRX and STi offers everything you desire in a catback exhaust system. Crafted from high-quality stainless steel and meticulously hand-fabricated in the USA, it boasts a stunning design. Utilizing your existing exhaust hangers, this exhaust kit comes complete with all necessary gaskets and hardware for a hassle-free installation process.

Vehicle Fitment:
2015-2020 Subaru WRX
2015-2020 Subaru STi

Install Notes:
We include 5 gaskets for this 4 gasket install.
• (1) 3" and M10 hardware for the center pipe to axle back
• (2) 2.5" and M10 hardware for the axle back to tips
• For the cat-back to stock downpipe use the 2.5" gasket and M8 hardware
• For the cat-back to 3" aftermarket downpipe use the 3" gasket and M10 hardware

Features & Specs
• 6.7 Pounds Lighter than Stock
• Tig Welded
• Back Purged
• 3" Piping to The Y
• 2.5" Piping From The Y to The Tips
• Mandrel Bent
• Full Stainless Steel
• Tig Welded
• Back Purged
• Gaskets & Hardware Included
• Bolts to Factory Locations
• Beautiful Fit and Finish

STM Products are made in the USA!
Lifetime Warranty on STM Parts to the original purchaser against manufacturing defects.

Includes:
(1) STM Stainless Exhaust (Mid and Y Pipes)
(2) 3" Remflex Gaskets
(2) 2.5" Remflex Gaskets
(8) M10x35 Bolts
(8) M10x1.5 Nuts
(2) M8x30 Bolts
(2) M8x1.25 Nuts

Shipping Times: 4-6 Weeks
Hand crafted and welded in New York, please give our fabricators time to create your piece!