HKS Super Turbo Catback Exhaust

2011–2014 Subaru WRX STI Sedan 2.5L

Part #: 31029-AF008

Overview

The HKS Super Turbo Catback Exhaust for the Subaru WRX STI Sedan (2011-2014) is designed to enhance your vehicle's performance and sound profile while maintaining a refined driving experience. Crafted for enthusiasts who seek a balance between sporty sound and daily drivability, this exhaust system delivers improved exhaust flow, increased power potential, and a distinctive, sporty tone that won't overwhelm the cabin.

Whether you're looking to support increased horsepower, improve exhaust efficiency, or simply upgrade your vehicle's sound, the HKS Super Turbo Catback offers a high-quality solution. Its straight, throttling-free design ensures minimal backpressure, helping your engine breathe better and perform at its best. Perfect for spirited driving or daily use, this exhaust system elevates your Subaru WRX STI's character without sacrificing comfort.

Key Features

The HKS Super Turbo Catback Exhaust features advanced engineering and premium materials to optimize performance and durability. Its key features include:

• Constructed with high-quality stainless steel tubing for corrosion resistance and longevity.
• 75mm diameter piping with a straight, throttling-free design to maximize exhaust flow and support power gains.
• 124mm burnt tips that add a sporty aesthetic and enhance the vehicle's aggressive stance.
• Low exhaust pressure thanks to the optimized pipe diameter and smooth bends, promoting better engine breathing.
• Quiet operation inside the cabin, with a refined yet sporty exhaust note that enhances driving enjoyment without excessive noise.
• Designed specifically for the 2011-2014 Subaru WRX STI Sedan, ensuring perfect fitment and easy installation.
• HKS's renowned craftsmanship and attention to detail, ensuring a high-quality, durable exhaust system.

Construction & Design

The HKS Super Turbo Catback Exhaust is engineered with precision and durability in mind. Its one-piece mandrel-bent stainless steel piping ensures smooth airflow and reduces turbulence, which helps improve engine response and power output. The exhaust features a straight, throttling-free design that minimizes exhaust backpressure, supporting optimal performance gains.

The burnt tips are crafted from high-quality stainless steel with a heat-treated finish, providing both aesthetic appeal and corrosion resistance. The overall design balances performance with a refined sound profile, making it suitable for daily driving while still delivering a sporty exhaust note when you accelerate.

Installation & Fitment

This exhaust system is a bolt-on upgrade that requires no cutting or welding. It mounts directly to the factory exhaust hangers and inlet points, making installation straightforward for those with basic mechanical skills. The HKS Super Turbo Catback is designed to fit perfectly on the 2011-2014 Subaru WRX STI Sedan, ensuring a seamless upgrade with factory-like fitment and finish. No tuning is necessary, but always verify your vehicle's compatibility before installation.

• Easy, bolt-on installation with standard hand tools
• No cutting, drilling, or special modifications required
• Includes all necessary hardware and clamps for a secure fit

What's Included

• Complete catback exhaust system with muffler and burnt tips
• All mounting hardware and clamps
• Installation instructions

Ideal For

• Subaru WRX STI owners seeking improved exhaust flow and sporty sound
• Performance enthusiasts aiming to support increased horsepower and torque
• Drivers who want a high-quality, durable exhaust upgrade with a refined, aggressive tone