{"product_id":"isr-hgc-long-tube-headers-for-350z-370z-g35-g37-vq35de-hr-vq37vhr","title":"ISR HGC Long Tube Headers for 350Z 370Z G35 G37 VQ35DE\/HR VQ37VHR","description":"\u003ch1\u003eISR HGC Long Tube Headers for Nissan 350Z, 370Z, Infiniti G35 \u0026amp; G37\u003c\/h1\u003e\n\u003cp\u003eUpgrade your VQ-powered Nissan or Infiniti with the \u003cstrong\u003eISR Performance HGC Long Tube Headers\u003c\/strong\u003e, designed for drivers who want stronger exhaust flow, a sharper exhaust tone, and improved performance over the restrictive factory manifold and catalytic converter setup.\u003c\/p\u003e\n\u003cp\u003eThese \u003cstrong\u003eISR long tube headers\u003c\/strong\u003e are a popular performance upgrade for the \u003cstrong\u003eNissan 350Z, Nissan 370Z, Infiniti G35, and Infiniti G37\u003c\/strong\u003e. Built from \u003cstrong\u003e304 brushed stainless steel\u003c\/strong\u003e with heavy-duty flanges, they are engineered to improve exhaust efficiency while maintaining the strength needed for aggressive street, track, drift, and competition builds.\u003c\/p\u003e\n\u003ch2\u003eWhy Upgrade to ISR HGC Long Tube Headers?\u003c\/h2\u003e\n\u003cp\u003eThe factory exhaust manifold and catalytic converter setup can restrict exhaust flow, especially on modified VQ engines. ISR’s long tube header design helps the engine breathe more efficiently by improving exhaust scavenging and reducing restriction. The result is better throttle response, a more aggressive VQ exhaust note, and stronger power potential when paired with supporting exhaust upgrades and proper tuning.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong tube header design:\u003c\/strong\u003e Improves exhaust flow and supports stronger mid-range and top-end performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHGC high ground clearance layout:\u003c\/strong\u003e Collector placement is designed to maximize ground clearance without sacrificing performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStepped primary tubing:\u003c\/strong\u003e Helps retain low and mid-range torque while allowing better high-rpm horsepower gains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e304 brushed stainless steel construction:\u003c\/strong\u003e Built for durability, heat resistance, and long-term performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty flanges:\u003c\/strong\u003e Provides a strong sealing surface for reliable installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory O2 sensor support:\u003c\/strong\u003e Each header includes two O2 bungs downstream of the collector for upstream and downstream O2 sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAWD compatible:\u003c\/strong\u003e Works with G35X and G37X AWD applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete installation hardware:\u003c\/strong\u003e Includes headers, gaskets, O2 bung plugs, exhaust nuts, and bolts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNissan 350Z Z33:\u003c\/strong\u003e VQ35DE \/ VQ35HR applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfiniti G35:\u003c\/strong\u003e VQ35DE \/ VQ35HR applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNissan 370Z Z34:\u003c\/strong\u003e VQ37VHR applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfiniti G37:\u003c\/strong\u003e VQ37VHR applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfiniti G35X \/ G37X:\u003c\/strong\u003e AWD applications compatible\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e2x ISR stainless steel long tube headers\u003c\/li\u003e\n\u003cli\u003e2x 2-bolt exhaust gaskets\u003c\/li\u003e\n\u003cli\u003e2x head-to-manifold gaskets\u003c\/li\u003e\n\u003cli\u003e4x O2 sensor bung plugs\u003c\/li\u003e\n\u003cli\u003e4x exhaust nuts\u003c\/li\u003e\n\u003cli\u003e4x exhaust bolts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePrimary O2 sensor harness extension is required because the O2 sensor location is lower on the header.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is strongly recommended due to the tight engine bay and header location.\u003c\/li\u003e\n\u003cli\u003eFor best results, pair with a high-flow Y-pipe, cat-back exhaust, and proper ECU tuning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eVideo: ISR Long Tube Headers Sound Example\u003c\/h2\u003e\n\u003cp\u003eHear how ISR long tube headers can change the sound and character of a VQ-powered Nissan 350Z. Sound will vary depending on the full exhaust setup, engine, tune, and supporting modifications.\u003c\/p\u003e\n\u003cdiv style=\"position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%;\"\u003e\u003ciframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" title=\"Nissan 350Z ISR Performance Long Tube Headers Exhaust Sound\" src=\"https:\/\/www.youtube.com\/embed\/rwLwcvOGhSU\"\u003e\n  \u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eImportant Legal Notice\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCompetition use only.\u003c\/strong\u003e These headers are legal only for use in competition vehicles that may never be registered, licensed, or used on public streets or highways, and for other exempted vehicles. Please check all local, state, and federal laws before purchase or installation.\u003c\/p\u003e\n\u003cp\u003eIf you want a serious VQ exhaust upgrade with stronger flow, aggressive sound, and high ground clearance design, the \u003cstrong\u003eISR Performance HGC Long Tube Headers\u003c\/strong\u003e are one of the most popular choices for 350Z, 370Z, G35, and G37 performance builds.\u003c\/p\u003e","brand":"FR SPORT","offers":[{"title":"Default Title","offer_id":48491929305271,"sku":"1DWTU","price":862.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/4896\/8631\/files\/Long_Tube_Headers__75541.1507235046.1280.1280.jpg?v=1779781174","url":"https:\/\/speedlounge.myshopify.com\/products\/isr-hgc-long-tube-headers-for-350z-370z-g35-g37-vq35de-hr-vq37vhr","provider":"Speed Lounge","version":"1.0","type":"link"}