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SKU: HS15STIG3T
Invidia 2015–2021 Subaru WRX/STI 4Dr Q300 Twin Outlet Rolled Titanium Burnt Quad Tip Cat-Back Exhaust
The Invidia Q300 Twin Outlet Rolled Titanium Burnt Quad Tip Cat-Back Exhaust (HS15STIG3T) is engineered for 2015–2021 Subaru WRX and STI 4-door models to deliver superior performance, aggressive styling, and a refined exhaust note.
Hand-crafted using premium SUS304 stainless steel piping with mandrel bends, continuous piping design, and Advantex material for optimized back pressure. It features a flat-bottom muffler for aerodynamic efficiency, double-wall rolled titanium burnt quad tips for a premium burnt titanium finish, and robot TIG welding for unmatched durability and show-quality construction.
Key Features
- SUS304 Stainless Steel Construction: Mandrel-bent piping with 3-inch diameter for unrestricted exhaust flow and reduced back pressure.
- Advantex Muffler Technology: Continuous internal piping and acoustic dampening for deep, sporty tone without drone.
- Twin Outlet Quad Tip Design: Rolled burnt titanium tips (3.5-inch diameter) for aggressive aesthetics and heat resistance.
- Aerodynamic Flat-Bottom Muffler: Improves high-speed stability and reduces weight for better handling.
- OEM-Compatible Fit: Direct bolt-on installation using factory hangers and flanges (new gaskets and hardware included).
Product Notes
- Provides measurable gains in horsepower, torque, and throttle response while maintaining emissions compliance.
- Minimal cabin drone – ideal for daily driving with a refined boxer rumble under acceleration.
- Tips feature burnt titanium finish for a unique, premium look that resists discoloration.
Warranty: Lifetime limited warranty against manufacturing defects.
Installation Notes
- Professional installation recommended for optimal alignment and torque specs.
- Bolt-on design – no cutting or welding required; uses factory mounting points.
- Inspect for clearance with aftermarket downpipes or suspension mods before install.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015–2021 | Subaru | WRX | Sedan (Base, Premium, Limited) |
| 2015–2021 | Subaru | WRX | STI (Base, Limited) |
Why Choose Invidia Q300?
- Trusted leader in performance exhausts with race-proven designs for Subaru enthusiasts.
- Balances aggressive sound and performance without excessive noise or drone.
- Precision engineering for exact fitment, weight reduction, and long-term reliability.
Frequently Asked Questions
-
Q: Will this fit my 2018 STI Limited?
A: Yes, fully compatible with all 2015–2021 WRX and STI sedan models, including Limited trims. -
Q: How loud is the Q300 compared to the N1?
A: The Q300 offers a deeper, more refined tone with less drone than the louder N1, perfect for street use. -
Q: Does it require a tune or downpipe?
A: No tune needed, but pairs excellently with Invidia downpipes for maximum gains.
Shipping & Handling
- Method: Ground freight delivery only.
- Availability: Usually ships within 1-2 business days.
- Packaging: Securely crated with protective foam for transit damage prevention.
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Invidia
At Invidia Exhaust, we are dedicated to creating exhaust systems that stand out for their exceptional craftsmanship, premium materials, and cutting-edge design. Our systems not only enhance vehicle performance but also elevate sound and aesthetics, catering to both racing enthusiasts and everyday drivers. Why Choose Invidia Exhaust? Performance Enhancement: Each exhaust system is meticulously engineered to reduce backpressure and boost engine output. Signature Sound: Experience an exhilarating exhaust note that sets you apart on the road. Precision Engineering: Designed using 3D scans of your vehicle's undercarriage for guaranteed precision fitment. Durable Materials: Made with Grade 304 stainless steel (or titanium for select systems) for exceptional durability and resistance to corrosion. Commitment to Quality With a commitment to ongoing technological innovation and stringent quality control, we ensure unparalleled performance, reliability, and durability in every product....
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