{"product_id":"hks-hi-power-muffler-single-wrxsti-2015-us","title":"HKS Hi-Power Single Muffler – 2015 Subaru WRX \/ STi (VA) | US Spec | Single Exit (31006-BF003)","description":"\u003ch3\u003eHKS Hi-Power Single Muffler – 2015 Subaru WRX \/ STi (VA) | US Specification | Single Exit\u003c\/h3\u003e\u003cp\u003eThe HKS Hi-Power Single Muffler for the 2015 US-specification Subaru WRX and STi (VA chassis) is one of the most iconic exhaust upgrades available for the EJ\/FA-powered WRX and STi — delivering HKS's legendary Hi-Power exhaust note in a direct-fit single exit muffler configuration engineered specifically for the 2015 US-market VA WRX and STi. HKS is one of the most respected and iconic Japanese performance brands in the world — a company with over 50 years of motorsport and performance development experience whose Hi-Power exhaust lineup has defined the sound of Japanese performance cars for decades. The HKS Hi-Power muffler is not just an exhaust upgrade — it is a piece of Japanese performance heritage.\u003c\/p\u003e\u003ch4\u003eKey Features:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHKS Hi-Power exhaust note — HKS's legendary Hi-Power exhaust character — a deep, refined, distinctly Japanese performance exhaust note that has defined the sound of modified WRX and STi builds for decades\u003c\/li\u003e\n\u003cli\u003eSingle exit configuration — single exit muffler tip — a clean, purposeful exhaust presentation that suits the VA WRX and STi's performance character\u003c\/li\u003e\n\u003cli\u003eUS specification — engineered for the 2015 US-market Subaru WRX and STi — correct connection points and dimensions for the US-spec VA chassis exhaust system\u003c\/li\u003e\n\u003cli\u003eDirect-fit — engineered for direct-fit installation on the 2015 US-spec VA WRX and STi — correct flange dimensions and connection points for the factory exhaust mid-pipe\u003c\/li\u003e\n\u003cli\u003eHKS quality — manufactured by HKS, one of the most respected and iconic Japanese performance brands in the world — over 50 years of motorsport and performance development experience\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eHKS Hi-Power — The Legacy:\u003c\/h4\u003e\u003cp\u003eThe HKS Hi-Power exhaust is one of the most iconic product lines in the Japanese performance aftermarket — a muffler design that has been a staple of the JDM tuning scene for decades. The Hi-Power's exhaust note is immediately recognizable — a deep, refined, distinctly Japanese performance sound that is neither obnoxiously loud nor disappointingly quiet. For WRX and STi owners who want the authentic HKS Hi-Power exhaust experience on their VA-chassis build, the HKS31006-BF003 is the correct, application-specific choice for the 2015 US-market WRX and STi.\u003c\/p\u003e\u003ch4\u003eVA WRX \/ STi — Platform Context:\u003c\/h4\u003e\u003cp\u003eThe 2015 Subaru WRX and STi (VA chassis) represent the fourth generation of one of the most celebrated all-wheel-drive performance sedans in automotive history. The VA WRX uses the FA20DIT turbocharged 2.0L engine, while the VA STi retains the legendary EJ257 turbocharged 2.5L boxer — two engines with very different exhaust characters that both benefit from the HKS Hi-Power muffler's refined exhaust note. The US-specification VA WRX and STi have specific exhaust system dimensions that differ from JDM-specification vehicles — the HKS31006-BF003 is engineered specifically for the US-market configuration.\u003c\/p\u003e\u003ch4\u003eSpecifications:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e HKS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HKS31006-BF003\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarcode:\u003c\/strong\u003e 4957266941485\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Hi-Power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Single exit muffler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification:\u003c\/strong\u003e US market\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 2015 Subaru WRX \/ WRX STi — VA chassis — US specification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 40.6 lbs (shipping weight)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment Information:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e2015 Subaru WRX — VA chassis — FA20DIT — US specification\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2015 Subaru WRX STi — VA chassis — EJ257 — US specification\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eUS specification — correct for US-market VA WRX and STi exhaust system dimensions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e This listing is for the 2015 model year US-specification VA WRX and STi — verify your specific model year and market specification before ordering. The VA WRX and STi were produced from 2015–2021 — confirm that HKS31006-BF003 is the correct Hi-Power muffler for your specific year and specification. Professional installation recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eWhat's Included:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHKS Hi-Power single muffler — 2015 Subaru WRX\/STi VA US spec (HKS31006-BF003)\u003c\/li\u003e\n\u003cli\u003eAll required hardware and gaskets for installation\u003c\/li\u003e\n\u003cli\u003eRefer to HKS's product documentation for complete kit contents\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eInstallation Notes:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eProfessional installation recommended — muffler installation requires correct torque at the mid-pipe connection and correct exhaust hanger alignment\u003c\/li\u003e\n\u003cli\u003eAllow the exhaust system to fully cool before installation — never work on a hot exhaust system\u003c\/li\u003e\n\u003cli\u003eApply anti-seize compound to all exhaust fasteners — exhaust fasteners are subject to extreme heat cycling and will seize without anti-seize\u003c\/li\u003e\n\u003cli\u003eVerify correct exhaust hanger alignment after installation — the exhaust system must hang correctly without contacting the underbody, heat shields, or suspension components\u003c\/li\u003e\n\u003cli\u003eA break-in period is normal for a new exhaust system — some smoke and odour from manufacturing residue is expected on the first few heat cycles and will dissipate\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eWhy HKS?\u003c\/h4\u003e\u003cp\u003eHKS is one of the most respected and iconic Japanese performance brands in the world — a company founded in 1973 with over 50 years of motorsport and performance development experience. HKS's product lineup spans turbochargers, exhaust systems, suspension, engine management, and performance accessories for a wide range of Japanese performance platforms. The HKS Hi-Power exhaust is one of HKS's most enduring and beloved product lines — a muffler design that has defined the sound of Japanese performance cars for decades. For WRX and STi owners who want the authentic HKS Hi-Power exhaust experience from one of the most iconic names in Japanese performance, HKS31006-BF003 is the correct choice.\u003c\/p\u003e\u003ch4\u003ePerfect For:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e2015 Subaru WRX and STi (VA chassis, US specification) owners who want the authentic HKS Hi-Power exhaust note — a deep, refined, distinctly Japanese performance exhaust character from one of the most iconic exhaust brands in the JDM performance world\u003c\/li\u003e\n\u003cli\u003eVA WRX and STi builds where the HKS Hi-Power muffler's legendary exhaust note and HKS brand heritage are the correct choice for a premium exhaust upgrade\u003c\/li\u003e\n\u003cli\u003eOwners who want a direct-fit, application-specific exhaust upgrade from HKS — engineered specifically for the 2015 US-market VA WRX and STi\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e 2015 US-specification VA WRX and STi only — verify model year and market specification before ordering. Apply anti-seize to all exhaust fasteners. Verify exhaust hanger alignment after installation. Break-in period normal on first heat cycles. Professional installation recommended.\u003c\/p\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":50884312760487,"sku":"HKS31006-BF003","price":1530.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/files\/HKS31006-BF003.jpg?v=1781554236","url":"https:\/\/www.straightsiximports.com\/en-us\/products\/hks-hi-power-muffler-single-wrxsti-2015-us","provider":"Straight Six Imports","version":"1.0","type":"link"}