{"product_id":"invidia-2015-subaru-wrx-sti-gemini-r400-single-layer-quad-titanium-tip-cat-back-exhaust","title":"Invidia 2015+ Subaru WRX \/ STI Gemini\/R400 Single Layer Quad Titanium Tip Cat-Back Exhaust","description":"\u003cdiv\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003eHS15STIGM4ST\u003c\/span\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch4\u003e\u003cstrong\u003eInvidia 2015+ Subaru WRX \/ STI Gemini\/R400 Single Layer Quad Titanium Tip Cat-Back Exhaust\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Invidia Gemini R400 Single Layer Quad Titanium Tip Cat-Back Exhaust (HS15STIGM4ST) is precision-engineered for 2015–2021 Subaru WRX and STI sedan models, offering superior performance gains, a rich deep sporty exhaust note, and premium styling.\u003c\/p\u003e\n\u003cp\u003eConstructed from mandrel-bent SUS304 polished stainless steel piping with minimal bends and larger diameter for optimal flow, it features Advantex muffler technology for drone-free sound, flat-bottom aerodynamic design, and single-layer rolled titanium quad tips (4.5-inch diameter) with robot TIG welding for exceptional durability and a high-end burnt titanium finish.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSUS304 Stainless Steel Piping:\u003c\/strong\u003e Mandrel-bent with larger diameter and minimal bends for unrestricted exhaust flow and significant HP\/torque increases.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvantex Muffler Technology:\u003c\/strong\u003e Continuous internal piping and acoustic dampening for a refined, deep boxer rumble without cabin drone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle Layer Quad Titanium Tips:\u003c\/strong\u003e Rolled 4.5-inch burnt titanium tips for heat resistance, aggressive aesthetics, and lightweight performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAerodynamic Flat-Bottom Muffler:\u003c\/strong\u003e Enhances high-speed stability, reduces weight, and promotes efficient exhaust evacuation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-Compatible Fit:\u003c\/strong\u003e Direct bolt-on installation using factory hangers and flanges (new gaskets and hardware included).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDelivers measurable horsepower and torque gains while enhancing throttle response and remaining emissions-compliant.\u003c\/li\u003e\n\u003cli\u003eBalances aggressive sound for track use with refined tone for daily driving – fills the gap between Q300 and N1 systems.\u003c\/li\u003e\n\u003cli\u003eTitanium tips provide a unique burnt finish that resists discoloration and complements Subaru's sporty look.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e Lifetime limited against manufacturing defects.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended for optimal alignment and torque specifications.\u003c\/li\u003e\n\u003cli\u003eBolt-on design no cutting or welding required uses OEM mounting points.\u003c\/li\u003e\n\u003cli\u003eMay require adapter for certain downpipes inspect clearance with aftermarket suspension.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015–2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX\u003c\/td\u003e\n\u003ctd\u003eSedan (Base, Premium, Limited)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015–2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003eSedan (Base, Limited)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhy Choose Invidia Gemini R400?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRace-proven design from a leader in Subaru performance exhausts, offering the perfect balance of power, sound, and style.\u003c\/li\u003e\n\u003cli\u003eSuperior craftsmanship with CNC flanges, robot TIG welding, and premium materials for long-term reliability.\u003c\/li\u003e\n\u003cli\u003eEngineered to enhance the natural Subaru boxer engine tone while providing noticeable performance upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will this fit my 2020 STI Limited sedan?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, fully compatible with all 2015–2021 WRX and STI sedan models, including Limited trims.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e How does the R400 sound compared to the Q300?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The R400 delivers a deeper, more aggressive tone with greater volume than the Q300, but still refined for street use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Does it require a downpipe or tune?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No tune needed standalone, but pairs excellently with Invidia downpipes for maximum power gains.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e Ground freight delivery only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e Usually ships within 1-2 business days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Securely crated with protective foam for maximum transit protection.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Invidia","offers":[{"title":"Default Title","offer_id":43760440934479,"sku":"INVHS15STIGM4ST","price":1626.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/hs15stigm4st-main.jpg?v=1764020359","url":"https:\/\/www.blackopsautoworks.com\/products\/invidia-2015-subaru-wrx-sti-gemini-r400-single-layer-quad-titanium-tip-cat-back-exhaust","provider":"Black Ops Auto Works","version":"1.0","type":"link"}