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.
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