{"product_id":"hks-hi-power-muffler-single-wrxsti-2015-us","title":"HKS Hi-Power Single-Exit Exhaust - 2015-2021 Subaru WRX STI","description":"\u003cp\u003eHKS 31006-BF003 replaces the factory multi-outlet layout with a single right-side Hi-Power muffler. The straight-through design and large main pipe reduce restriction while creating a distinctly more aggressive exhaust character.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e74.7-to-85 mm center pipe diameter.\u003c\/li\u003e\n\u003cli\u003eBullet-style muffler with a 119 mm outlet.\u003c\/li\u003e\n\u003cli\u003eSliding tail-tip adjustment sets the outlet projection.\u003c\/li\u003e\n\u003cli\u003eRemovable inner silencer provides a quieter configuration.\u003c\/li\u003e\n\u003cli\u003eSUS304 and coated SUH409 stainless-steel construction.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHKS USA application\u003c\/th\u003e\n\u003ctd\u003e2015-2021 Subaru WRX STI sedan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eEngine \/ chassis\u003c\/th\u003e\n\u003ctd\u003eEJ257 \/ VAF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDrivetrain\u003c\/th\u003e\n\u003ctd\u003eAWD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMain pipe\u003c\/th\u003e\n\u003ctd\u003e74.7 to 85 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOutlet\u003c\/th\u003e\n\u003ctd\u003e119 mm, single right-side\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch4\u003eFitment\u003c\/h4\u003e\u003cp\u003eThe verified HKS USA application is the 2015-2021 WRX STI 4-door. Do not substitute the newer VB FA24 exhaust. The kit manual includes two mid-pipe sections, the main muffler, gaskets and installation fasteners.\u003c\/p\u003e\u003ch4\u003eInstallation \u0026amp; Included Components\u003c\/h4\u003e\u003cp\u003eInstall using the HKS manual and check the complete system for clearance and leaks. The inner silencer changes noise level, not vehicle compatibility. Local noise rules still apply; track-style sound does not establish approval for every public-road jurisdiction.\u003c\/p\u003e\u003ch4\u003eRelated HKS Parts\u003c\/h4\u003e\u003cp\u003eExplore our \u003ca href=\"\/collections\/hks\"\u003eHKS performance parts collection\u003c\/a\u003e for additional application-specific upgrades.\u003c\/p\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":67695414706255,"sku":"HKS31006-BF003","price":1499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/hks-31006-bf003-wrx-sti-single-exit-exhaust-1000.webp?v=1791919098","url":"https:\/\/www.blackopsautoworks.com\/products\/hks-hi-power-muffler-single-wrxsti-2015-us","provider":"Black Ops Auto Works","version":"1.0","type":"link"}