{"product_id":"exhaust-kit-for-gmc-sierra-2007-2015-4-3l-6-2l","title":"Exhaust Kit for GMC Sierra (2007-2015) 4.3L 6.2L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Flow Dual Exhaust Conversion Kit for 2007-2015 GMC Sierra (GMT900 \/ K2XX)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The dual exhaust kit converts factory single-exit tailpipes into a dual 2.5-inch configuration on 2007-2015 GMC Sierra trucks to reduce exhaust backpressure and increase exhaust gas velocity behind the muffler.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Sierra Exhaust Restriction and Flow Limitation\u003c\/h3\u003e\n\u003cp\u003eFactory exhaust routing on the \u003cstrong\u003eGMT900\u003c\/strong\u003e and \u003cstrong\u003eK2XX\u003c\/strong\u003e platforms relies on a single tailpipe exit with crush-bent transitions that choke volumetric efficiency. Under load or heavy towing, the stock single-tailpipe configuration produces excessive backpressure, trapping thermal energy in the post-muffler tract and restricting cylinder scavenging on both the \u003cstrong\u003eVortec\u003c\/strong\u003e and \u003cstrong\u003eEcoTec3\u003c\/strong\u003e platforms.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis conversion kit introduces a high-flow, smooth-transition Y-pipe featuring a single 3-inch inlet splitting into dual 2.5-inch mandrel-bent aluminized steel tailpipes. Mandrel bending preserves internal cross-sectional diameter throughout every radius, eliminating flow turbulence and velocity drops. The dual pipes route straight back along the frame rails to clear OEM spare tires and factory receiver hitches, venting exhaust gases evenly through two 3.5-inch polished chrome tips.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 high-flow Y-pipe (single 3\" inlet, dual 2.5\" outlets)\u003c\/li\u003e\n  \u003cli\u003e2 aluminized mandrel-bent 2.5\" tailpipes\u003c\/li\u003e\n  \u003cli\u003e2 weld-on chrome-plated tips (3.5\" round x 18\" long)\u003c\/li\u003e\n  \u003cli\u003e8 muffler clamps\u003c\/li\u003e\n  \u003cli\u003e1 large 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;\"\u003e2007-2015 GMC Sierra 1500\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;\"\u003e4.3L (LU3, LV3), 6.2L (L92, L86) \/ GMT900, K2XX\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;\"\u003e195-420 hp \/ 260-460 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\u003e2007-2013 GMC Sierra 1500 (GMT900) 4.3L V6 \/ 6.2L V8\u003c\/li\u003e\n  \u003cli\u003e2014-2015 GMC Sierra 1500 (K2XX) 4.3L EcoTec3 V6 \/ 6.2L EcoTec3 V8\u003c\/li\u003e\n  \u003cli\u003eGasoline and Flex-Fuel models equipped with factory single-inlet muffler configurations\u003c\/li\u003e\n  \u003cli\u003eAll factory wheelbase configurations\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 GMT900 and K2XX Sierra?\u003c\/h4\u003e\n\u003cp\u003eYes, this is designed for 2007-2015 GMC Sierra models equipped with the 4.3L and 6.2L engines. \u003cstrong\u003eThis kit does not include a muffler and is strictly compatible with models originally equipped with a single-inlet muffler configuration; models with dual-inlet factory mufflers are excluded.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eIs this exhaust system a direct bolt-on installation?\u003c\/h4\u003e\n\u003cp\u003eNo, this is a universal-fit builder kit that may require cutting, fabrication, or a 2.5-to-3-inch\/2.75-to-3-inch adapter pipe depending on your specific intermediate pipe layout.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Heavy-Duty Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle rigorous towing and heavy payload conditions, this aluminized steel routing maintains critical clearance around leaf springs, shocks, and spare-tire carriers while providing clean thermal dissipation under continuous high-load hauling.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67562632937720,"sku":"DS-EY3Z1SFYA","price":265.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/exhaust-kit-for-gmc-sierra-2007-2015-4-3l-6-2l-1.jpg?v=1790987780","url":"https:\/\/performancechiptuning.com\/products\/exhaust-kit-for-gmc-sierra-2007-2015-4-3l-6-2l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}