{"product_id":"exhaust-kit-for-gmc-sierra-2001-2006-6-0l","title":"Exhaust Kit for GMC Sierra (2001-2006) 6.0L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Flow Dual Muffler-Back Exhaust Kit for 2001-2006 GMC Sierra (GMT800)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The dual muffler-back exhaust kit replaces the restrictive factory single tailpipe on the 2001-2006 GMC Sierra to reduce exhaust gas backpressure and optimize scavenging efficiency on 6.0L V8 applications.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Sierra Exhaust Restriction\u003c\/h3\u003e\n\u003cp\u003eThe OEM exhaust system on the \u003cstrong\u003eGMT800\u003c\/strong\u003e platform relies on a heavily baffled, chambered factory muffler and a single crush-bent tailpipe. This configuration creates excessive parasitic backpressure on high-displacement \u003cstrong\u003eVortec 6000\u003c\/strong\u003e (LQ4\/LQ9) engines, restricting thermal dissipation and choking high-RPM gas flow during continuous heavy-load towing cycles.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis kit upgrades the rear exhaust architecture using a 3-inch single-inlet to dual 2.5-inch outlet Flowsound two-chambered muffler coupled to mandrel-bent aluminized steel tailpipes. Smooth-radius mandrel bends maintain uniform cross-sectional diameter to minimize turbulent wall boundary layer drag, routing twin exits parallel to the outer frame rails while preserving clearance for factory receiver hitches and standard-sized spare tires.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Flowsound 2-chamber muffler (single 3\" inlet, dual 2.5\" outlets)\u003c\/li\u003e\n  \u003cli\u003e2 aluminized mandrel-bent two-piece 2.5\" tail pipes (slip-together)\u003c\/li\u003e\n  \u003cli\u003e8 muffler clamps\u003c\/li\u003e\n  \u003cli\u003e1 larger exhaust clamp\u003c\/li\u003e\n  \u003cli\u003e4 rubber-insulated hangers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2001-2006 GMC Sierra\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eVortec 6000 (LQ4\/LQ9) \/ GMT800\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e300 hp \/ 360 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2001-2006 GMC Sierra 1500HD, 2500, 2500HD, 3500 with 6.0L V8\u003c\/li\u003e\n  \u003cli\u003eGasoline and flex-fuel variants equipped with factory single-inlet mufflers\u003c\/li\u003e\n  \u003cli\u003eCompatible with all factory wheelbases\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GMT800 Sierra?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a fit for 2001-2006 GMC Sierra trucks equipped with the \u003cstrong\u003eVortec 6000\u003c\/strong\u003e engine that came from the factory with a single-inlet muffler; it will not fit models factory-equipped with dual-inlet mufflers.\u003c\/p\u003e\n\n\u003ch4\u003eIs this a direct bolt-on installation?\u003c\/h4\u003e\n\u003cp\u003eNo, this is not a direct bolt-on kit; an experienced installer may need to cut or fabricate adapter piping since no components forward of the muffler inlet are included.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Heavy-Duty Caliber\u003c\/h3\u003e\n\u003cp\u003eBuilt for the structural and thermal demands of hauling and heavy payload service, this mandrel-bent aluminized setup provides continuous thermal stability and rugged structural support without compromising trailer hitch or spare tire geometry under full suspension articulation.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67562635034872,"sku":"DS-EOPLQKC1Y","price":229.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/exhaust-kit-for-gmc-sierra-2001-2006-6-0l-1.jpg?v=1790988032","url":"https:\/\/performancechiptuning.com\/es\/products\/exhaust-kit-for-gmc-sierra-2001-2006-6-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}