CONTACT US TO ORDER - OUT OF STOCK

This product is currently out of stock. Enter your details delow and the Speed Science team will be in touch.

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

$1,828.79 NZD
SKU STM-15WRX-CAT-AXL
Buy now pay later,no extra cost!

Payments from $182.87 with

Enjoy now. Pay Later. Interest free. Learn More
Add to Wishlist

"Allow 7-14 Days For Parts Manufacture/Order Processing Before Shipping"

If you already purchased the STM Axle-Back Exhaust, you can purchase the rest of the cat-back system separately for a full upgrade! This *should* also be compatible with many other aftermarket axle-backs that have a 2.5" flange and bolts to the stock locations, but please confirm before purchase.

The STM Stainless Steel Cat-Back Dual Exit Exhaust for the 2015+ WRX and STi will bolt up to your stock or aftermarket downpipe and gives you everything you want out of a catback exhaust! Full stainless steel construction, gorgeous design and hand-fabricated in the USA. The STM Exhaust utilizes your existing exhaust hangers and includes all gaskets and hardware for a clean and easy installation.

Features & Specifications:

  • 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

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

Vehicle Fitment:

  • 2015-2020 Subaru WRX
  • 2015-2020 Subaru STi

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