{"product_id":"xforce-holden-vt-vz-v8-5-7l-sedan-1997-2006-stainless-steel-header-1-3-4-inch-primary-3-inch-metallic-cats-100-cell","title":"XForce | LS1 V8 Headers \u0026 Metallic Cat Kit | Holden VT-VZ 1 3\/4\" Primaries | H2-HV13B-KIT","description":"\u003ch2\u003eXForce LS1 V8 Header \u0026amp; Metallic Cat Kit - 1 3\/4\" Primaries - H2-HV13B-KIT\u003c\/h2\u003e\n\u003cp\u003eUnlock the maximum potential of your LS1 V8 with the Xforce Header and Cat Kit. Crafted from high-strength 201-grade stainless steel, this kit features larger 1 3\/4\" primary pipes designed specifically for modified or high-output Gen III engines that require superior exhaust scavenging. The 4-into-1 tuned design merges into a 3\" outlet for optimal flow velocity.\u003c\/p\u003e\n\u003cp\u003eIncluded in this performance package are 3\" metallic high-flow 100-cell catalytic converters. These \"race-style\" cats significantly reduce backpressure compared to standard ceramic units, allowing your V8 to breathe freely. Expect a noticeable increase in torque, horsepower, and a deeper, more aggressive exhaust note. This kit is a direct bolt-on solution when paired with an Xforce cat-back exhaust system.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the Box?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x Pair of 4-into-1 Headers (1 3\/4\" Primaries, 3\" Outlets)\u003c\/li\u003e\n\u003cli\u003e2x 3\" Metallic High-Flow 100-Cell Catalytic Converters\u003c\/li\u003e\n\u003cli\u003eInstallation Gaskets and Bolt Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFeatures:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge 1 3\/4\" Primaries:\u003c\/strong\u003e Ideal for cammed or modified LS1 engines requiring increased flow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" Metallic Cats:\u003c\/strong\u003e 100-cell substrate provides maximum flow while maintaining a physical catalytic brick.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-into-1 Tuned Design:\u003c\/strong\u003e Precision engineered to balance exhaust pulses and improve mid-to-high range power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Non-polished 201-grade stainless steel for long-lasting performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Fitment:\u003c\/strong\u003e Suits a wide range of VT-VZ Holden and HSV RWD\/AWD variants.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eImportant Installation Notes:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eO2 Extension Looms:\u003c\/strong\u003e Required for installation as the sensor bungs are relocated (sold separately).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno Usage:\u003c\/strong\u003e It is highly recommended to use tuning pipes in place of cats when tuning on a Dyno to avoid overheating the metallic substrate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMake:\u003c\/strong\u003e Holden \/ HSV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e 5.7L LS1 V8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader Primary Size:\u003c\/strong\u003e 1 3\/4\" (45mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader Outlet Size:\u003c\/strong\u003e 3\" (76mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 201 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCat Type:\u003c\/strong\u003e 100-cell Metallic\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eImportant Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe image shown may not reflect the actual product\u003c\/li\u003e\n\u003cli\u003eShipping times may vary depending on destination and stock availability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eVehicle Applications:\u003c\/h3\u003e\n\u003cdiv style=\"font-family: Arial, sans-serif; max-width: 100%; padding: 20px; border: 1px solid #ccc; border-radius: 5px; font-size: 1.1rem;\"\u003e\n\u003ch5 class=\"vehicle-application-title\"\u003eHSV Maloo (01\/1994 - on), GTO (01\/1994 - on), GTS (01\/1994 - on), Sv300 (01\/1994 - on), Senator (01\/1994 - on), Clubsport (01\/1994 - on), Avalanche (01\/1994 - on), Coupe 4 (01\/1994 - on), Grange (01\/1994 - on), Holden Commodore (01\/1994 - on), Calais (01\/1994 - on), Crewman (01\/1994 - on), One Tonner (01\/1994 - on), Statesman (01\/1994 - on), Monaro (01\/1994 - on), Caprice (01\/1994 - on), Adventra (01\/1994 - on)\u003c\/h5\u003e\n\u003cbr\u003e\n\u003cdiv style=\"width: 100%; overflow-x: auto; margin-bottom: 10px;\"\u003e\n\u003ctable style=\"min-width: 900px; border-collapse: collapse; font-size: 1.1rem; line-height: 1.5; width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f0f0f0; border-bottom: 3px solid #333;\"\u003e\n\u003cth style=\"padding: 10px 5px; text-align: left;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"padding: 10px 5px; text-align: left;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 10px 5px; text-align: left;\"\u003eFrom\u003c\/th\u003e\n\u003cth style=\"padding: 10px 5px; text-align: left;\"\u003eTo\u003c\/th\u003e\n\u003cth style=\"padding: 10px 5px; text-align: left;\"\u003eBody\u003c\/th\u003e\n\u003cth style=\"padding: 10px 5px; text-align: left;\"\u003eSeries\u003c\/th\u003e\n\u003cth style=\"padding: 10px 5px; text-align: left;\"\u003eEngine\u003c\/th\u003e\n\u003cth style=\"padding: 10px 5px; text-align: left;\"\u003eVariant\u003c\/th\u003e\n\u003cth style=\"padding: 10px 5px; text-align: left;\"\u003eDrivetrain\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"9\" style=\"padding: 8px 5px; background-color: #e9e9e9; font-weight: bold;\"\u003eHOLDEN \/ HSV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHOLDEN\u003c\/td\u003e\n\u003ctd\u003eADVENTRA\u003c\/td\u003e\n\u003ctd\u003e08\/2003\u003c\/td\u003e\n\u003ctd\u003e12\/2007\u003c\/td\u003e\n\u003ctd\u003eWagon\u003c\/td\u003e\n\u003ctd\u003eVY, VZ\u003c\/td\u003e\n\u003ctd\u003eLS1 5.7L\u003c\/td\u003e\n\u003ctd\u003eAll V8\u003c\/td\u003e\n\u003ctd\u003eAWD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHOLDEN\u003c\/td\u003e\n\u003ctd\u003eCOMMODORE\u003c\/td\u003e\n\u003ctd\u003e06\/1999\u003c\/td\u003e\n\u003ctd\u003e12\/2007\u003c\/td\u003e\n\u003ctd\u003eSedan\/Ute\/Wagon\u003c\/td\u003e\n\u003ctd\u003eVT-VZ\u003c\/td\u003e\n\u003ctd\u003eLS1 5.7L\u003c\/td\u003e\n\u003ctd\u003eAll V8\u003c\/td\u003e\n\u003ctd\u003eRWD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHOLDEN\u003c\/td\u003e\n\u003ctd\u003eMONARO\u003c\/td\u003e\n\u003ctd\u003e12\/2001\u003c\/td\u003e\n\u003ctd\u003e07\/2006\u003c\/td\u003e\n\u003ctd\u003eCoupe\u003c\/td\u003e\n\u003ctd\u003eV2, VZ\u003c\/td\u003e\n\u003ctd\u003eLS1 5.7L\u003c\/td\u003e\n\u003ctd\u003eAll V8\u003c\/td\u003e\n\u003ctd\u003eRWD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHOLDEN\u003c\/td\u003e\n\u003ctd\u003eSTATESMAN \/ CAPRICE\u003c\/td\u003e\n\u003ctd\u003e06\/1999\u003c\/td\u003e\n\u003ctd\u003e07\/2006\u003c\/td\u003e\n\u003ctd\u003eSedan\u003c\/td\u003e\n\u003ctd\u003eWH, WK, WL\u003c\/td\u003e\n\u003ctd\u003eLS1 5.7L\u003c\/td\u003e\n\u003ctd\u003eAll V8\u003c\/td\u003e\n\u003ctd\u003eRWD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSV\u003c\/td\u003e\n\u003ctd\u003eCLUBSPORT \/ SENATOR\u003c\/td\u003e\n\u003ctd\u003e07\/1999\u003c\/td\u003e\n\u003ctd\u003e09\/2004\u003c\/td\u003e\n\u003ctd\u003eSedan\u003c\/td\u003e\n\u003ctd\u003eVT, VX, VY\u003c\/td\u003e\n\u003ctd\u003eLS1 5.7L\u003c\/td\u003e\n\u003ctd\u003ei V8\u003c\/td\u003e\n\u003ctd\u003eRWD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSV\u003c\/td\u003e\n\u003ctd\u003eMALOO\u003c\/td\u003e\n\u003ctd\u003e03\/2001\u003c\/td\u003e\n\u003ctd\u003e09\/2004\u003c\/td\u003e\n\u003ctd\u003eUte\u003c\/td\u003e\n\u003ctd\u003eVU, VY\u003c\/td\u003e\n\u003ctd\u003eLS1 5.7L\u003c\/td\u003e\n\u003ctd\u003ei V8\u003c\/td\u003e\n\u003ctd\u003eRWD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHSV\u003c\/td\u003e\n\u003ctd\u003eGTS \/ GTO\u003c\/td\u003e\n\u003ctd\u003e04\/1995\u003c\/td\u003e\n\u003ctd\u003e09\/2004\u003c\/td\u003e\n\u003ctd\u003eSedan\/Coupe\u003c\/td\u003e\n\u003ctd\u003eVS, VT, VX, VY, V2\u003c\/td\u003e\n\u003ctd\u003eLS1\/HSV V8\u003c\/td\u003e\n\u003ctd\u003ei V8\u003c\/td\u003e\n\u003ctd\u003eRWD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e\n.warranty-table-wrapper { overflow-x: auto; margin: 20px 0; }\n.warranty-table { width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; min-width: 400px; }\n.warranty-table th { background-color: #111; color: #fff; text-align: left; padding: 12px; }\n.warranty-table td { padding: 12px; border-bottom: 1px solid #ddd; }\n.warranty-table tr:nth-child(even) { background-color: #f9f9f9; }\n.warranty-table tr:hover { background-color: #f1f1f1; }\n.warranty-title { font-size: 18px; font-weight: bold; margin-bottom: 10px; font-family: Arial, sans-serif; }\n\u003c\/style\u003e\n\u003cdiv class=\"warranty-title\"\u003eWarranty Information\u003c\/div\u003e\n\u003cdiv class=\"warranty-table-wrapper\"\u003e\n\u003ctable class=\"warranty-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003cth\u003eWarranty Period\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e304 \u0026amp; 201 Stainless Steel Exhaust Systems\u003c\/td\u003e\n\u003ctd\u003e60 Months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessories\u003c\/td\u003e\n\u003ctd\u003e12 Months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCatalytic Converters\u003c\/td\u003e\n\u003ctd\u003e12 Months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectronic Products (Including SmartBox)\u003c\/td\u003e\n\u003ctd\u003e12 Months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMild Steel \u0026amp; 409 Stainless Steel Exhaust Systems\u003c\/td\u003e\n\u003ctd\u003e24 Months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMild Steel Headers\u003c\/td\u003e\n\u003ctd\u003e12 Months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStainless Steel Headers\u003c\/td\u003e\n\u003ctd\u003e24 Months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUniversal 304 Stainless Steel Mufflers\u003c\/td\u003e\n\u003ctd\u003e24 Months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUniversal Mild Steel \u0026amp; 409 Stainless Steel Mufflers\u003c\/td\u003e\n\u003ctd\u003e12 Months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003ePayment \u0026amp; Security:\u003c\/strong\u003e\u003cbr\u003eYour payment information is processed securely. We do not store credit card details nor have access to your credit card information.\u003c\/p\u003e","brand":"XForce","offers":[{"title":"Default Title","offer_id":45703404978338,"sku":"H2-HV13B-KIT","price":1305.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0576\/1112\/4898\/files\/H2-HV13B-KIT_1.png?v=1753413137","url":"https:\/\/nationaltowbars.com.au\/products\/xforce-holden-vt-vz-v8-5-7l-sedan-1997-2006-stainless-steel-header-1-3-4-inch-primary-3-inch-metallic-cats-100-cell","provider":"National Towbars Australia","version":"1.0","type":"link"}