{"product_id":"invidia-15-21-wrx-sti-gemini-r400-signature-series-black-tip-cat-back-exhaust","title":"Invidia [15-21 WRX\/STI] Gemini R400 Signature Series Black Tip Cat-Back Exhaust","description":"\u003cp\u003eThe Invidia Gemini R400 Signature Series Cat-Back Exhaust with quad black tips is engineered for the 2015-2021 Subaru WRX and WRX STI sedan, filling the sound gap between Invidia's Q300 and N1 systems with a unique, aggressive note that minimizes harsh cabin noise - particularly at highway speeds. The R400 muffler was designed using years of Invidia engineering experience to balance unrestricted exhaust gas flow with sound dampening, while 76mm (3-inch) 304 stainless steel mandrel-bent piping with minimal bends improves horsepower, torque, and throttle response. It finishes with quad 4-inch (101mm) slash-cut single-layer black tips, and installs directly with new gaskets and hardware included.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFits 2015-2021 Subaru WRX and WRX STI (sedan)\u003c\/li\u003e\n\u003cli\u003eR400 Signature Series: aggressive race-inspired note, minimized highway drone\u003c\/li\u003e\n\u003cli\u003e76mm (3-inch) 304 stainless steel piping, split to 60mm; resonated mid-pipe\u003c\/li\u003e\n\u003cli\u003eQuad 4-inch (101mm) slash-cut single-layer black tips\u003c\/li\u003e\n\u003cli\u003eTuned mufflers; cast flanges; hangers welded at OEM locations\u003c\/li\u003e\n\u003cli\u003eNew gaskets and hardware included\u003c\/li\u003e\n\u003cli\u003eInvidia part HS15STIGM4SB\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JDMuscle","offers":[{"title":"Default Title","offer_id":67700826308702,"sku":"invHS15STIGM4SB","price":1655.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0232\/4721\/files\/invidia-gemini-r400-single-layer-cat-back-exhaust-w-black-tips-subaru-wrx-sti-2015-2020-hs15stigm4sb-cat-back-exhaust-system-invidia-invhs15stigm4sb.jpg?v=1791565446","url":"https:\/\/slrspeed.com\/products\/invidia-15-21-wrx-sti-gemini-r400-signature-series-black-tip-cat-back-exhaust","provider":"SLRspeed","version":"1.0","type":"link"}