{"product_id":"valvetronic-hfd-exhaust-bmw-g80-g81-g82-g8","title":"Valvetronic HFD Exhaust System – BMW M3 M4 G-Series S58 (Pre-Order ONLY)","description":"\u003ch1\u003e*Pre-order only. ETA for next availability Early September*\u003c\/h1\u003e\n\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eThe Exhaust Everyone Is Talking About.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eThe Valvetronic Designs HFD Exhaust System represents the next evolution of exhaust technology for the BMW S58 platform.\u003c\/p\u003e\n\u003cp\u003eRather than simply making the car louder, the HFD (High Frequency Development) system was engineered to completely transform the character of the S58 by refining exhaust pulse timing, eliminating unwanted rasp and producing a smoother, higher-pitched exotic exhaust note that has become recognised worldwide.\u003c\/p\u003e\n\u003cp\u003eCombined with Valvetronic's signature valved rear exhaust, the result is one of the most refined and aggressive sounding exhaust systems available for the BMW G-Chassis M platform.\u003c\/p\u003e\n\u003cp\u003eWhether you're daily driving or chasing lap times, the HFD system delivers OEM refinement when the valves are closed and an unmistakable motorsport-inspired soundtrack when they're open.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/oS-CmuztqIs?si=piDke7k55yFBaA68\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eWhy Choose the Valvetronic HFD Exhaust?\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Valvetronic Designs Product\u003c\/li\u003e\n\u003cli\u003eComplete HFD Midpipe \u0026amp; Valved Axle-Back System\u003c\/li\u003e\n\u003cli\u003eEliminates unwanted S58 rasp\u003c\/li\u003e\n\u003cli\u003eExotic high-frequency exhaust note\u003c\/li\u003e\n\u003cli\u003eImproved exhaust flow\u003c\/li\u003e\n\u003cli\u003e3-inch performance midpipe\u003c\/li\u003e\n\u003cli\u003eElectronic valve control\u003c\/li\u003e\n\u003cli\u003eOEM valve integration available\u003c\/li\u003e\n\u003cli\u003eT304 Stainless Steel or Grade 5 Titanium\u003c\/li\u003e\n\u003cli\u003eDesigned for stock and high horsepower builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSound Clip: IRL 3 inch Downpipes + HFD Midpipe + Axleback\u003c\/h3\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/m9o0HSbxeIQ\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch3\u003eSound Clip: HFD Exhaust System (400 Cell Downpipes + HFD Midpipe + Axle-Back)\u003c\/h3\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/bfymkN7Gb-w?si=ty_upHyNU_F9KASt\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch3\u003eSound Clip: HFD Exhaust System (Stock Downpipes + Midpipe + Axle-Back)\u003c\/h3\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/jUTuV-dniAM\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eWhy Everyone Wants the HFD\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eUnlike traditional equal-length or single midpipe systems, the HFD Exhaust was developed using a completely new acoustic philosophy.\u003c\/p\u003e\n\u003cp\u003eThe High Frequency Development midpipe optimises exhaust pulse timing to create a cleaner, smoother and more exotic inline-six sound without introducing the harsh drone and metallic rasp commonly associated with other aftermarket systems.\u003c\/p\u003e\n\u003cp\u003eThe result is an exhaust note many enthusiasts compare to the iconic Nissan GT-R while still maintaining the unmistakable BMW straight-six character.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/J1TM8ZszrGY?si=dHBKxaZd6tBykTCf\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eSound Characteristics\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eExotic high-frequency inline-six tone\u003c\/li\u003e\n\u003cli\u003eEliminates low RPM rasp\u003c\/li\u003e\n\u003cli\u003eReduced cabin drone\u003c\/li\u003e\n\u003cli\u003eAggressive under acceleration\u003c\/li\u003e\n\u003cli\u003eRefined during cruising\u003c\/li\u003e\n\u003cli\u003eValve-controlled sound on demand\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003ePerformance Benefits\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eImproved exhaust gas flow\u003c\/li\u003e\n\u003cli\u003eFaster turbo response\u003c\/li\u003e\n\u003cli\u003eSupports high horsepower applications\u003c\/li\u003e\n\u003cli\u003eCompatible with hybrid turbo setups\u003c\/li\u003e\n\u003cli\u003eReduced back pressure\u003c\/li\u003e\n\u003cli\u003eLightweight construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eConstruction\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eEvery Valvetronic HFD Exhaust is manufactured using premium motorsport materials.\u003c\/p\u003e\n\u003cp\u003eChoose between:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eT304 Stainless Steel\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExceptional durability\u003c\/li\u003e\n\u003cli\u003eOutstanding corrosion resistance\u003c\/li\u003e\n\u003cli\u003ePerfect for daily driven vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGrade 5 Titanium\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUltra lightweight\u003c\/li\u003e\n\u003cli\u003eMaximum weight reduction\u003c\/li\u003e\n\u003cli\u003eDistinct titanium finish\u003c\/li\u003e\n\u003cli\u003eUltimate premium option\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEvery system features precision TIG welding, mandrel bent tubing and premium exhaust tips.\u003c\/p\u003e\n\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eWhat's Included\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eHFD Midpipe Assembly\u003c\/li\u003e\n\u003cli\u003eValved Axle-Back Exhaust\u003c\/li\u003e\n\u003cli\u003eElectronic Valve Controller\u003c\/li\u003e\n\u003cli\u003ePremium Exhaust Tips\u003c\/li\u003e\n\u003cli\u003eInstallation Hardware\u003c\/li\u003e\n\u003cli\u003eClamps \u0026amp; Fittings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eVehicle Compatibility\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eDesigned for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBMW M3 G80\u003c\/li\u003e\n\u003cli\u003eBMW M3 Touring G81\u003c\/li\u003e\n\u003cli\u003eBMW M4 G82 Coupe\u003c\/li\u003e\n\u003cli\u003eBMW M4 G83 Convertible\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIncluding Competition, Competition xDrive and CS models where applicable.\u003c\/p\u003e\n\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eInstallation\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eProfessional installation is recommended.\u003c\/p\u003e\n\u003cp\u003eThe system is fully reversible and engineered for factory mounting locations.\u003c\/p\u003e\n\u003cp\u003eInstallation guide available upon request.\u003c\/p\u003e\n\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003ePre-Order Information\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003ePre-Order Only\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEstimated next shipment:\u003c\/strong\u003e \u003cstrong\u003e9 September\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis product is imported specifically for each customer order.\u003c\/p\u003e\n\u003cp\u003eThe listed price includes international freight to Australia unless otherwise stated.\u003c\/p\u003e\n\u003cp\u003eImport duties, GST, customs clearance fees and any government charges payable upon arrival in Australia are not included and remain the responsibility of the purchaser.\u003c\/p\u003e\n\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eWhy Buy From Gridline Custom Motorsports?\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eAs an authorised Valvetronic Designs dealer, Gridline Custom Motorsports supplies genuine Valvetronic products backed by expert advice and dedicated BMW performance support.\u003c\/p\u003e\n\u003cp\u003eOur team specialises exclusively in modern BMW performance platforms and can assist with complete S58 packages including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eValvetronic HFD Exhaust Systems\u003c\/li\u003e\n\u003cli\u003eHFD Midpipes\u003c\/li\u003e\n\u003cli\u003eMHD ECU Flash Tuning\u003c\/li\u003e\n\u003cli\u003exHP Transmission Tuning\u003c\/li\u003e\n\u003cli\u003eSame-Day ECU Unlocks\u003c\/li\u003e\n\u003cli\u003eProject Gamma Carbon Intakes\u003c\/li\u003e\n\u003cli\u003eEBC Performance Braking Packages\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eImportant Information\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eProfessional installation is recommended.\u003c\/p\u003e\n\u003cp\u003eCustomers are responsible for confirming compatibility before ordering.\u003c\/p\u003e\n\u003cp\u003eDue to the specialised nature of this product, all HFD Exhaust Systems are supplied as special-order items and may be subject to manufacturer production schedules.\u003c\/p\u003e\n\u003cp\u003eImages are for illustration purposes only and may vary slightly from the supplied product.\u003c\/p\u003e\n\u003cp\u003ePerformance exhaust systems are non-returnable once installed or modified.\u003c\/p\u003e","brand":"Valvetronics","offers":[{"title":"HFD Midpipe Only \/ Brushed T304 Stainless Steel \/ No Exhaust Tips (Midpipe Only)","offer_id":46075086831814,"sku":"BMW.G8X.M3.HFD.MP.BR","price":2599.95,"currency_code":"AUD","in_stock":true},{"title":"HFD Midpipe Only \/ Brushed T304 Stainless Steel \/ Brushed Steel (3.5 Outlet)","offer_id":46075086864582,"sku":"N\/A","price":2599.95,"currency_code":"AUD","in_stock":true},{"title":"HFD Midpipe Only \/ Brushed T304 Stainless Steel \/ Burnt (3.5 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