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HKS SUPER TURBO MUFFLER Ti Subaru VAB WRX STI/VAG WRX S4

HKS Super Turbo Muffler Titanium Cat-Back Exhaust — Subaru WRX STI (VAB) / WRX S4 (VAG) | 31029-AF013V

Name: HKS Super Turbo Muffler Titanium Cat-Back Exhaust — Subaru WRX STI (VAB) / WRX S4 (VAG) | 31029-AF013V - Wyld Performance
SKU: hks31029-AF013V
Price: 4499.99 USD
Availability: InStock

SKU: hks31029-AF013V

Original price was: $6,300.00.Current price is: $4,499.99.

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2 in stock

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HKS Super Turbo Muffler Ti (Part# 31029-AF013V) - Subaru WRX STI (VAB) / WRX S4 (VAG)

look, if you drive a VAB or VAG platform, you know that finding an exhaust that isn’t overly raspy or droning on the highway is a nightmare. the HKS Super Turbo Muffler Ti (31029-AF013V) is basically the "holy grail" for these cars. HKS didn’t just make this thing loud; they engineered it to be efficient. the "Super Turbo" name isn't just marketing—it’s designed to handle higher boost levels and increased exhaust flow without sounding like a cheap tin can.the best part about this muffler is the titanium tip. it looks incredible, but more importantly, it cuts down on weight where it actually matters. if you want that deep, aggressive boxer rumble without the dreaded highway drone that ruins a long drive, this is the system you want to bolt on. it sounds mean when you get on it, but it’s surprisingly civilized when you’re just cruising.

why this muffler is the right choice:

perfect flow: it’s designed to minimize backpressure, which means your turbo spools up faster and your car breathes way better.
titanium finish: the tip isn't just there to look cool (though it definitely does)—it’s lightweight, heat-resistant, and high-end.
zero drone: HKS spent a ton of time on the internal baffling, so you get the aggressive sound on acceleration without the annoying interior booming at highway speeds.
build quality: you’re getting HKS Japanese engineering. the welds, the fitment, and the finish are miles ahead of the generic stuff you find on eBay.

vehicle fitment

this system is a direct fit for:

Subaru WRX STI (VAB): 2014–2020
Subaru WRX S4 (VAG): 2014–2020
note: this is a premium cat-back style performance upgrade. if you’re looking to squeeze more power out of your FA20 or EJ engine, this is the starting point for your exhaust flow.

Frequently Asked Questions

is it going to be too loud for a daily driver?

not at all. that’s why they call it "Super Turbo." it’s loud enough to let people know you’re running a modified car when you get on the gas, but it’s very quiet and composed at cruising speeds. it’s perfect for a daily driver.

does it come with everything i need to install?

yeah, the kit comes with the hardware you need for a straightforward install. you’ll want to have it up on a lift, but it’s a standard bolt-on job for any shop or a solid driveway mechanic.

why is it better than the cheaper stuff?

because with the cheap stuff, you’re paying for noise. with HKS, you’re paying for sound engineering. the cheap stuff will drone, it’ll rust, and the fitment will be a headache. HKS fits perfectly every time and it actually helps the car perform better.

will i need a tune?

if you’re just doing the muffler, you’ll be fine. but if you plan on going further with intakes or downpipes, make sure you get a proper tune to keep the engine happy and safe.

⚠️ Clearance Item — Final 2 Units. This part will not be restocked. Once inventory is gone, it is gone for good. Returns are not accepted on this item. Order with confidence knowing the part ships new in original HKS packaging.

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HKS Super Turbo Muffler Titanium Cat-Back Exhaust — Subaru WRX STI (VAB) / WRX S4 (VAG) | 31029-AF013V