By Cobb Tuning

Cobb Tuning Cat-Back Exhaust Subaru WRX/STI 2011-2021

Regular price $1,899.00
Regular price Sale price $1,899.00
Shipping calculated at checkout.
Availability: Out of stock
SKU: '515132
Regular price $1,899.00
Regular price Sale price $1,899.00
  • Australia Wide Shipping

    $15 Flat Rate Shipping

  • Best Prices

    We Price Match

  • Performance Specialists

    In-House Technicians

Transform your Subaru's exhaust note with the COBB Tuning Cat-Back Exhaust System, engineered to deliver an aggressive, performance-oriented sound without the drone that plagues lesser systems. Precision-crafted from 304 stainless steel and fully TIG welded, this exhaust system combines motorsport-grade construction with refined acoustics for the discerning enthusiast.

COBB's engineers spent countless hours perfecting the balance between performance and livability. The result is an exhaust that announces your presence with authority during spirited driving, yet remains civilized during highway cruising and daily commutes. Premium mandrel-bent tubing ensures unrestricted exhaust flow, while the carefully tuned muffler design eliminates the harsh resonance that makes long drives unbearable.

  • 304 Stainless Steel Construction – Corrosion-resistant material ensures longevity in all climates
  • Full TIG Welding – Motorsport-grade fabrication for leak-free performance and structural integrity
  • Mandrel-Bent Tubing – Smooth bends maintain consistent diameter for optimal exhaust flow
  • Aggressive Sound Profile – Deep, throaty tone that enhances the boxer engine's character
  • Drone-Free Design – Engineered acoustics eliminate highway resonance
  • Direct Bolt-On Fitment – No modifications required, includes all necessary hardware
  • Polished Stainless Tips – Premium aesthetic finish that complements any build

COBB Tuning has earned its reputation as one of the most trusted names in Subaru performance. With decades of experience in motorsport and street performance, COBB understands what enthusiasts demand: quality that lasts, performance that delivers, and sound that inspires. Every COBB exhaust system undergoes rigorous testing to ensure it meets the exacting standards that have made COBB the go-to choice for Subaru owners worldwide.

Fast Australian Shipping: In-stock items ship same-day from our Australian warehouse. Backed by COBB's manufacturer warranty and Coore's commitment to premium service.

Elevate your Subaru's performance and presence with an exhaust system engineered by enthusiasts, for enthusiasts.

What clients say


  • Really fast and high quality customer support, my order got to me faster than the quoted time too. No complaints

  • The team took a mostly broken car after some work done elsewhere, and have systematically made it reliable and fast for a fair price. The staff are invested in the work they do which also makes a big difference.

  • Jeff was extremely helpful in assisting me with my exhaust. Always kept me updated and answered any queries in a timely manner. Will definitely be coming back for my future mods

  • Justin and his crew is amazing! Always ready to help and service with a smile. Trusty, friendly and reliable! Had my car sent in for repair twice and it’s fixed on time, at a reasonable price and with no issues. Highly recommended!

  • Easy to deal with and part was ordered quickly

Fitment & Compatibility


How do I know if this part fits my car?

We recommend checking your vehicle's make, model, year, and variant carefully. Most product listings include compatibility notes, but if you're unsure, contact us before purchasing.

Can you confirm fitment before I place my order?

Absolutely. Send us your VIN or Rego and we’ll confirm fitment for you.

Do you offer installation at your workshop?

Yes, we offer installations for most parts at our Ringwood workshop. Contact us to book or get a fitting quote.

Shipping & Handling


How long will it take for my order to arrive?

Most in-stock items ship within 1-2 business days. Delivery time depends on your location and shipping option chosen at checkout.

Do you ship internationally?

Currently, we only ship within Australia. For international enquiries, please contact us directly.

Can I pick up my order in person?

Yes, local pickup is available from our Ringwood workshop. Simply select ‘Local Pickup’ at checkout and we’ll notify you when your order is ready.

Please note: Some items are stored offsite and may need to be transferred from our warehouse, which can add a few business days before pickup is available.

Returns & Warranty


Can I return a product if it doesn’t fit?

Returns are accepted within 14 days if the item is unused and in original packaging. Please see our full Returns Policy for details.


What warranty comes with your products?

All products come with the manufacturer’s warranty. If you experience any issues, contact us and we’ll assist with the claim process.