{"product_id":"smg-2014-21-silverado-sierra-suburban-tahoe-yukon-escalade-5-3-6-2-underhood-flex-fuel-kit-v2-0","title":"SMG 2014-21 Silverado\/Sierra\/Suburban\/Tahoe\/Yukon\/Escalade (5.3\/6.2) UNDERHOOD Flex Fuel Kit v2.0","description":"\u003ch3 data-start=\"437\" data-end=\"501\"\u003e\u003cstrong data-start=\"441\" data-end=\"501\"\u003eSMG Flex Fuel Conversion Kit \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"503\" data-end=\"891\"\u003eSMG’s Flex Fuel Conversion Kits are the benchmark for clean, reliable, and performance-oriented flex fuel integration. Every kit is 100% plug-and-play — no cutting, splicing, or guesswork required. We use only \u003cstrong data-start=\"713\" data-end=\"761\"\u003ehigh-quality OEM-style electrical connectors\u003c\/strong\u003e, and each harness is \u003cstrong data-start=\"783\" data-end=\"825\"\u003ewrapped in a continuous flexible braid\u003c\/strong\u003e for lasting durability and a professional, OEM-plus appearance.\u003c\/p\u003e\n\u003ch4 data-start=\"893\" data-end=\"943\"\u003e\u003cstrong data-start=\"898\" data-end=\"943\"\u003eNow Featuring Our All-New Hose Assemblies\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp data-start=\"944\" data-end=\"1043\"\u003eFor 2025, every SMG Flex Fuel Kit includes our \u003cstrong data-start=\"991\" data-end=\"1031\"\u003eredesigned PTFE fuel hose assemblies\u003c\/strong\u003e, featuring:\u003c\/p\u003e\n\u003cul data-start=\"1044\" data-end=\"1399\"\u003e\n\u003cli data-start=\"1044\" data-end=\"1111\"\u003e\n\u003cp data-start=\"1046\" data-end=\"1111\"\u003e\u003cstrong data-start=\"1046\" data-end=\"1070\"\u003eMachine-crimped ends\u003c\/strong\u003e for precision and long-term durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1112\" data-end=\"1186\"\u003e\n\u003cp data-start=\"1114\" data-end=\"1186\"\u003e\u003cstrong data-start=\"1114\" data-end=\"1138\"\u003eCam-lock connections\u003c\/strong\u003e for quick, secure, and leak-free installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1187\" data-end=\"1277\"\u003e\n\u003cp data-start=\"1189\" data-end=\"1277\"\u003e\u003cstrong data-start=\"1189\" data-end=\"1216\"\u003eUltra-smooth PTFE cores\u003c\/strong\u003e resistant to ethanol, methanol, and all modern fuel blends\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1278\" data-end=\"1399\"\u003e\n\u003cp data-start=\"1280\" data-end=\"1399\"\u003e\u003cstrong data-start=\"1280\" data-end=\"1307\"\u003eDouble-braided exterior\u003c\/strong\u003e that not only looks amazing but also ensures the best fit and function we’ve ever offered\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1401\" data-end=\"1620\"\u003eThese aren’t just hoses — they’re purpose-built components that elevate both performance and appearance. The result is a system that’s stronger, cleaner, and more confidence-inspiring than anything else on the market.\u003c\/p\u003e\n\u003ch4 data-start=\"1622\" data-end=\"1655\"\u003e\u003cstrong data-start=\"1627\" data-end=\"1655\"\u003ePerformance You Can Feel\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp data-start=\"1656\" data-end=\"2019\"\u003eWith minimal tools and roughly 30 minutes of installation time (depending on mechanical experience), you can equip your vehicle with the \u003cstrong data-start=\"1793\" data-end=\"1847\"\u003ecapability to safely run high-octane ethanol fuels\u003c\/strong\u003e.\u003cbr data-start=\"1848\" data-end=\"1851\"\u003eWith proper tuning, many modern engines have seen \u003cstrong data-start=\"1901\" data-end=\"1940\"\u003egains exceeding 30 wheel horsepower\u003c\/strong\u003e — making this one of the most powerful dollar-for-dollar upgrades available.\u003c\/p\u003e\n\u003cp data-start=\"2021\" data-end=\"2113\"\u003eNo other simple bolt-on delivers this kind of performance, reliability, and visual appeal.\u003c\/p\u003e\n\u003ch4 data-start=\"2115\" data-end=\"2144\"\u003e\u003cstrong data-start=\"2120\" data-end=\"2144\"\u003eInstallation Details\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul data-start=\"2145\" data-end=\"2617\"\u003e\n\u003cli data-start=\"2145\" data-end=\"2233\"\u003e\n\u003cp data-start=\"2147\" data-end=\"2233\"\u003eFully \u003cstrong data-start=\"2153\" data-end=\"2170\"\u003eplug-and-play\u003c\/strong\u003e harness – no wire cutting or fuel line modification required\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2234\" data-end=\"2270\"\u003e\n\u003cp data-start=\"2236\" data-end=\"2270\"\u003e\u003cstrong data-start=\"2236\" data-end=\"2255\"\u003e100% reversible\u003c\/strong\u003e installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2271\" data-end=\"2338\"\u003e\n\u003cp data-start=\"2273\" data-end=\"2338\"\u003e\u003cstrong data-start=\"2273\" data-end=\"2295\"\u003eUnderhood mounting\u003c\/strong\u003e connects directly at your OEM fuel rails\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2339\" data-end=\"2617\"\u003e\n\u003cp data-start=\"2341\" data-end=\"2496\"\u003eIf you prefer a \u003cstrong data-start=\"2357\" data-end=\"2380\"\u003estealth-mounted kit\u003c\/strong\u003e (underbody location using your OEM flex harness), please contact \u003ca data-start=\"2446\" data-end=\"2493\" class=\"decorated-link cursor-pointer\" rel=\"noopener\"\u003esales@smgspeed.com\u003cspan aria-hidden=\"true\" class=\"ms-0.5 inline-block align-middle leading-none\"\u003e\u003csvg width=\"20\" height=\"20\" viewbox=\"0 0 20 20\" fill=\"currentColor\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" data-rtl-flip=\"\" class=\"block h-[0.75em] w-[0.75em] stroke-current stroke-[0.75]\"\u003e\u003cpath d=\"M14.3349 13.3301V6.60645L5.47065 15.4707C5.21095 15.7304 4.78895 15.7304 4.52925 15.4707C4.26955 15.211 4.26955 14.789 4.52925 14.5293L13.3935 5.66504H6.66011C6.29284 5.66504 5.99507 5.36727 5.99507 5C5.99507 4.63273 6.29284 4.33496 6.66011 4.33496H14.9999L15.1337 4.34863C15.4369 4.41057 15.665 4.67857 15.665 5V13.3301C15.6649 13.6973 15.3672 13.9951 14.9999 13.9951C14.6327 13.9951 14.335 13.6973 14.3349 13.3301Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cblockquote data-start=\"2499\" data-end=\"2617\"\u003e\n\u003cp data-start=\"2501\" data-end=\"2617\"\u003e\u003cem data-start=\"2501\" data-end=\"2617\"\u003eNote: the stealth kit requires cutting your OEM fuel line. A precision cutting tool is included with that version.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2619\" data-end=\"2939\"\u003eInstallation guides may be available for reference, but SMG does not provide installation or tuning support. Consult a professional installer or tuner if attempting a DIY install.\u003cbr data-start=\"2798\" data-end=\"2801\"\u003eIf your vehicle doesn’t have a vehicle-specific guide, a \u003cstrong data-start=\"2858\" data-end=\"2893\"\u003eUniversal PCM Pin-Out Reference\u003c\/strong\u003e is available for general wiring assistance.\u003c\/p\u003e\n\u003ch4 data-start=\"2941\" data-end=\"2986\"\u003e\u003cstrong data-start=\"2946\" data-end=\"2986\"\u003eWarranty \u0026amp; Professional Installation\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp data-start=\"2987\" data-end=\"3374\"\u003e\u003cstrong data-start=\"2987\" data-end=\"3053\"\u003eProfessional installation is required for warranty validation.\u003c\/strong\u003e\u003cbr data-start=\"3053\" data-end=\"3056\"\u003eWhile performance parts typically do not include a warranty, SMG stands behind our craftsmanship — if your kit is installed by a \u003cstrong data-start=\"3185\" data-end=\"3212\"\u003everifiable professional\u003c\/strong\u003e, we’ll \u003cstrong data-start=\"3220\" data-end=\"3262\"\u003ecover SMG in-house components for life\u003c\/strong\u003e (to the original purchaser).\u003cbr data-start=\"3291\" data-end=\"3294\"\u003eAll claims require return and testing by SMG before any authorization is issued.\u003c\/p\u003e\n\u003ch4 data-start=\"3376\" data-end=\"3401\"\u003e\u003cstrong data-start=\"3381\" data-end=\"3401\"\u003eAdditional Notes\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul data-start=\"3402\" data-end=\"3627\"\u003e\n\u003cli data-start=\"3402\" data-end=\"3500\"\u003e\n\u003cp data-start=\"3404\" data-end=\"3500\"\u003eAll kits now ship with the \u003cstrong data-start=\"3431\" data-end=\"3470\"\u003eupgraded black PTFE hose assemblies\u003c\/strong\u003e as shown in product photos.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3501\" data-end=\"3543\"\u003e\n\u003cp data-start=\"3503\" data-end=\"3543\"\u003eInstallation process remains the same.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3544\" data-end=\"3627\"\u003e\n\u003cp data-start=\"3546\" data-end=\"3627\"\u003e\u003cstrong data-start=\"3546\" data-end=\"3563\"\u003eTune required\u003c\/strong\u003e to enable ethanol sensor functionality and run ethanol fuels.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SMGspeed","offers":[{"title":"Default Title","offer_id":45904652795964,"sku":"SMGFFKSIL14+","price":314.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/5934\/4956\/files\/20251020_154641.jpg?v=1784558995","url":"https:\/\/rpm-racing.com\/products\/smg-2014-21-silverado-sierra-suburban-tahoe-yukon-escalade-5-3-6-2-underhood-flex-fuel-kit-v2-0","provider":"Racing Precision Motorsports","version":"1.0","type":"link"}