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SKU: HS11STIGM4ST
Invidia 2011-2014 Subaru WRX / STI Sedan Gemini/R400 Single Layer Quad Titanium Tip Cat-Back Exhaust
The Invidia Gemini R400 Single Layer Quad Titanium Tip Cat-Back Exhaust (HS11STIGM4ST) is the ultimate performance upgrade for 2011–2014 Subaru WRX and STI sedan owners.
Hand-crafted from polished SUS304 stainless steel with fully mandrel-bent 76mm piping, minimal bends, and CNC-machined flanges, this system delivers massive horsepower/torque gains, a deep aggressive boxer growl, and show-stopping looks with single-layer rolled titanium quad tips (4.5-inch diameter). Advantex muffler technology and flat-bottom design provide refined sound with zero drone while improving high-speed aerodynamics.
Key Features
- Full SUS304 Polished Stainless Construction: 76mm mandrel-bent piping for maximum flow and proven power gains.
- Advantex Muffler Technology: Deep, refined tone with no annoying drone – perfect balance of street and track.
- Single Layer Quad Titanium Tips: 4.5-inch rolled burnt titanium tips for lightweight, heat-resistant premium styling.
- Flat-Bottom Aerodynamic Mufflers: Reduces weight and improves high-speed stability.
- Direct Bolt-On Fitment: Uses all factory hangers and includes new gaskets/hardware.
Product Notes
- Significant horsepower and torque increase across the entire RPM range.
- Deeper and louder than Q300, quieter than N1 – ideal middle-ground for daily + spirited driving.
- Titanium tips resist discoloration and maintain burnt finish for life.
Warranty: Lifetime limited against manufacturing defects.
Installation Notes
- Professional installation recommended for perfect alignment.
- 100% bolt-on – no cutting or welding required.
- May require minor adjustment with certain aftermarket downpipes.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011–2014 | Subaru | Impreza WRX | Sedan (Base, Premium, Limited) |
| 2011–2014 | Subaru | Impreza WRX STI | Sedan (Base, Limited, tS) |
Why Choose Invidia Gemini R400?
- Race-proven design trusted by top Subaru tuners and rally teams worldwide.
- Best-in-class fitment, finish, and long-term reliability.
- Delivers the perfect aggressive sound and performance without sacrificing drivability.
Frequently Asked Questions
-
Q: Will this fit my 2014 STI Sedan?
A: Yes, perfect direct fit for all 2011–2014 WRX and STI sedan models. -
Q: How loud is the R400 vs Q300?
A: Noticeably deeper and more aggressive than Q300, but still refined with minimal drone. -
Q: Do I need a tune?
A: No tune required, but highly recommended with a downpipe for full potential.
Shipping & Handling
- Method: Ground freight delivery only.
- Availability: Usually ships within 1-2 business days.
- Packaging: Heavy-duty crating with foam protection.
Catback
Shop catback exhaust systems at Black Ops Auto Works for cat-back exhaust kits, performance exhaust systems, stainless steel exhausts, titanium exhausts, dual rear exit exhausts, track exhausts, touring exhausts, axle-back exhausts, and street performance exhaust upgrades. This collection is built for drivers who want deeper sound, improved exhaust flow, better throttle response, aggressive rear-end styling, and vehicle-specific bolt-on fitment. Use this Catback collection to choose the right exhaust system by vehicle platform, brand, material, sound level, tip finish, and driving goal. A catback exhaust can help improve sound, reduce exhaust restriction, support performance upgrades, and give your car, truck, SUV, Jeep, or performance build a cleaner, more aggressive look. Shop Catback Exhaust Systems by Brand Black Ops Auto Works carries catback exhaust systems from trusted performance brands including Borla, CORSA Performance, MagnaFlow, MBRP, AWE Tuning, Invidia, Solo Performanc...
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Black Ops Auto Works carries one of the largest selections of performance exhaust systems available online, with 7,700+ products covering cat-back exhausts, axle-back exhausts, turbo-back systems, downpipes, headers, mid-pipes, X-pipes, H-pipes, mufflers, resonators, catalytic converters, exhaust tips, and every component in between. Whether you're building a street car, a daily driver, a diesel truck, or a track build, the right exhaust upgrade is here. Shop by Exhaust System Type Cat-Back Exhaust Systems: The most popular performance exhaust upgrade. Replaces everything from the catalytic converter back for improved sound, better flow, and premium tip styling. Available in single exit, dual exit, and quad exit configurations. Axle-Back Exhaust Systems: A simpler bolt-on that replaces the rear section from the axle back. Best for drivers who want an improved exhaust note and cleaner tip appearance without a full system swap. Headers and Manifolds: Long tube headers and shorty h...
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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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