{"product_id":"1-3-4-longtube-headers","title":"1 3\/4\" Longtube Headers","description":"The Speed Engineering Silverado \u0026amp; Sierra longtube headers are crafted from premium 304 stainless steel, offering a blend of quality, performance, and affordability for 1999-2006 GM trucks and SUVs. These headers feature 1 3\/4\" mandrel-bent tubing and are TIG welded for durability and optimal exhaust flow. The natural stainless steel finish and CNC machined flanges ensure a precise fit and appealing look under the hood.\n\nEngineered for V8 applications, including 4.8L, 5.3L, and 6.0L engines, these longtube headers are designed to maximize exhaust scavenging and provide significant performance improvements. Dyno testing has shown gains of over 25+ rwhp. The headers include merge spikes and are available in a race version without Air and EGR fittings, making them suitable for competition use.\n\nVehicle applications include 1999-2006 Chevrolet Silverado\/Tahoe, GMC Sierra\/Yukon, 2002-2006 Cadillac EXT, and 2002-2006 Cadillac Escalade, compatible with both 2WD and 4WD models. However, potential fitment considerations exist: vehicles with a larger 4L80E transmission may require trimming of bellhousing ears, and most 6.0L applications with a 2-into-1 exhaust system will require fabrication for the y-pipe connection or use of an x-pipe kit. Earlier 2500 models might also encounter fitment issues due to chassis design variations. This product is intended for race-only applications and use on public roads is prohibited by the Clean Air Act.","brand":"Speed Engineering","offers":[{"title":"Default Title","offer_id":52663767499064,"sku":"25-1012\/25-1014","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687686634.jpg?v=1784329439","url":"https:\/\/store.motormia.co\/products\/1-3-4-longtube-headers","provider":"MOTORMIA","version":"1.0","type":"link"}