HKS ES Premium Cat Back Exhaust - 2011-2014 Subaru WRX / STI Sedan
HKS ES Premium Cat Back Exhaust - 2011-2014 Subaru WRX / STI Sedan
HKS
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PRODUCT DETAILS ▾
RallySport Direct proudly carries performance upgrades by one of the biggest names in the industry, HKS. Since 1973, HKS has been a leading innovator in turbocharger technology, and many of their products have been utilized on world-class race cars of all makes and genres. Today, HKS continues to engineer high-performance engine components to improve the power and the performance of your vehicle.
This is the HKS ES Premium Cat-Back Exhaust System. This exhaust system features a larger piping diameter, smooth bends, and durable stainless steel construction to provide your vehicle with a lifetime worth of performance. The design removes any restrictions to the exhaust flow that is associated with the OEM design, allowing your engine to exhale much easier for improved horsepower and torque, all while creating an aggressive exhaust note.
DETAILS:
- 304 stainless steel construction
- Larger piping diameter
- Designed with a silent chamber to reduce the chances of exhaust drone
- Dual Premium mufflers with polished 115mm exhaust tips
- Smooth bends
- Improves the exhaust flow
- Creates more power, performance, and improves the low-end torque
- Produces an aggressive exhaust note
- Exhaust hangers welded onto the OEM location to make for a direct exhaust replacement
- Will include new hardware and O-ring gaskets
WHY WE CARRY THIS ▾
We only list parts we’d run ourselves or recommend to a friend building a real car. If it feels vague, unverified, or inconsistent, it doesn’t make the cut.
- Fitment-first mindset — no “universal” roulette
- Brand reputation matters — we favor proven manufacturing
- Support that actually responds with real answers
WHAT TO EXPECT ▾
This is the clean path: correct fitment, clean install, and results that match the intent.
- Install-ready experience with correct mounting where provided
- Finish that holds up to real driving, not just photos
- Selections on this page drive the exact fitment shipped
TRUST, BUILT INTO THE PROCESS.
Anyone can list parts. We curate what belongs on a serious build. Our goal is simple: fewer surprises, cleaner installs, and confidence when you hit “Buy.”
Fitment checked
We prioritize vehicle-specific listings and clear selection logic so you’re not gambling on compatibility.
Brand discipline
Proven manufacturing and consistent quality matter more than hype. We bias toward what actually holds up.
Real support
If you have a question, you’ll get a human answer that helps you finish the build — not a copy-paste shrug.
RallySport Direct proudly carries performance upgrades by one of the biggest names in the industry, HKS. Since 1973, HKS has been a leading innovator in turbocharger technology, and many of their products have been utilized on world-class race cars of all makes and genres. Today, HKS continues to engineer high-performance engine components to improve the power and the performance of your vehicle.
This is the HKS ES Premium Cat-Back Exhaust System. This exhaust system features a larger piping diameter, smooth bends, and durable stainless steel construction to provide your vehicle with a lifetime worth of performance. The design removes any restrictions to the exhaust flow that is associated with the OEM design, allowing your engine to exhale much easier for improved horsepower and torque, all while creating an aggressive exhaust note.
DETAILS:
- 304 stainless steel construction
- Larger piping diameter
- Designed with a silent chamber to reduce the chances of exhaust drone
- Dual Premium mufflers with polished 115mm exhaust tips
- Smooth bends
- Improves the exhaust flow
- Creates more power, performance, and improves the low-end torque
- Produces an aggressive exhaust note
- Exhaust hangers welded onto the OEM location to make for a direct exhaust replacement
- Will include new hardware and O-ring gaskets
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