{"product_id":"invidia-15-21-wrx-15-21-wrx-sti-q300-single-cat-back-exhaust","title":"Invidia [15-21 WRX] [15-21 WRX STI] Q300 Single Cat-Back Exhaust","description":"\u003cp\u003eThe Invidia Q300 Single Cat-Back Exhaust for the 2015-2021 Subaru WRX and WRX STI delivers the Q300's signature deep, refined tone in a lightweight single-exit layout. Built from polished SUS304 stainless steel with 3-inch (76mm) mandrel-bent piping, a resonated mid pipe with flex section, and an Advantex-lined flat-bottom muffler, it frees up exhaust flow for stronger horsepower and torque while keeping cabin drone in check. A single 4-inch (101mm) rolled slant-cut stainless steel tip finishes the system with a bold, motorsport-inspired look. New gaskets and hardware are included, and hangers welded onto the OEM locations make installation a direct bolt-on.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFits 2015-2021 Subaru WRX and WRX STI (VA chassis)\u003c\/li\u003e\n\u003cli\u003eQ300 single-exit design - quieter and more refined than R400\/N1, still deep and sporty\u003c\/li\u003e\n\u003cli\u003e3-inch (76mm) polished SUS304 stainless steel mandrel-bent piping; resonated mid pipe with flex section\u003c\/li\u003e\n\u003cli\u003eAdvantex-lined flat-bottom muffler for high-flow performance with controlled drone\u003c\/li\u003e\n\u003cli\u003eSingle 4-inch (101mm) rolled slant-cut polished stainless steel tip\u003c\/li\u003e\n\u003cli\u003eNew gaskets and hardware included; OEM-location hangers, direct bolt-on\u003c\/li\u003e\n\u003cli\u003eStock-downpipe note: a stock-DP-to-aftermarket-cat-back adapter (e.g. GrimmSpeed) may be required with the factory downpipe\u003c\/li\u003e\n\u003cli\u003eInvidia part HS15SW4G3S\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JDMuscle","offers":[{"title":"Default Title","offer_id":67700890370142,"sku":"invHS15SW4G3S","price":1031.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0232\/4721\/files\/invidia-q300-cat-back-exhaust-single-subaru-wrx-sti-2015-2019-hs15sw4g3s-cat-back-exhaust-system-invidia-invhs15sw4g3s.jpg?v=1791566418","url":"https:\/\/slrspeed.com\/products\/invidia-15-21-wrx-15-21-wrx-sti-q300-single-cat-back-exhaust","provider":"SLRspeed","version":"1.0","type":"link"}