{"id":9398841770209,"title":"Flowtech 11575FLT Shorty Headers GM LS Engine Swap","handle":"flt11575flt","description":"\u003cp class=\"MsoNormal\" style=\"mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman'; color: black;\"\u003eFlowtech designed these 11575FLT Shorty Style Headers specifically for GM LS Engine Swaps. Made from 304 Stainless Steel, they have 1-5\/8” mandrel bent primary tubes, 2-1\/2” collectors and a universal fit for GM LS1, LS2, LS3, LS6, LSX engines.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman'; color: black;\"\u003eThe 3\/8” thick header flanges provide a leak-free seal, and the 2-1\/2” reducers feature oxygen sensor bungs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman'; color: black;\"\u003ePremium gaskets and collector hardware come included.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman'; color: black;\"\u003eFlowtech Exhaust products are the perfect combination of quality and value!\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"MsoNormal\" style=\"mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal;\"\u003e\n\u003cb\u003e\u003cu\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman'; color: black;\"\u003eFlowtech 11575FLT Headers Features:\u003c\/span\u003e\u003c\/u\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.5pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003e\u003c\/span\u003e\u003c\/b\u003e\n\u003c\/h3\u003e\n\u003cul type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eHeader Style: Shorty\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003ePrimary Tube Diameter: 1.625 in.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eCollector Diameter: 2.500 in.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eCollector Attachment: 3-Bolt Flange\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eFlange Thickness: 0.375 in.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eMaterial: 304 Stainless Steel\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eFinish: Natural\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eGaskets Included: Yes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eHardware Included: Yes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eQuantity: Sold as a pair\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"color: black; line-height: normal;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eA division of Holley, Flowtech focuses on high-performance exhaust components. Their easy-to-install products range from headers and manifolds to mufflers to complete systems, all designed to give performance and audible gains all at a very affordable cost.\u003c\/span\u003e\u003c\/p\u003e","published_at":"2026-03-02T15:19:45-06:00","created_at":"2026-03-02T13:21:11-06:00","vendor":"FLOWTECH","type":"Headers","tags":[],"price":29995,"price_min":29995,"price_max":29995,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":48038179078369,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"FLT11575FLT","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Flowtech 11575FLT Shorty Headers GM LS Engine Swap","public_title":null,"options":["Default Title"],"price":29995,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap1.webp?v=1772482661","\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap_2.webp?v=1772482686","\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap_3.webp?v=1772482686","\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap_4.webp?v=1772482687","\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap_5.jpg?v=1772482686"],"featured_image":"\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap1.webp?v=1772482661","options":["Title"],"media":[{"alt":"Flowtech Exhaust 11575FLT, Headers, Shorty Style, for GM LS Engine Swaps, Universal, 304 Stainless Steel, 1-5\/8 primary, 2-1\/2 reducer, sold as a pair","id":39580857696481,"position":1,"preview_image":{"aspect_ratio":1.019,"height":2515,"width":2562,"src":"\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap1.webp?v=1772482661"},"aspect_ratio":1.019,"height":2515,"media_type":"image","src":"\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap1.webp?v=1772482661","width":2562},{"alt":"Flowtech Exhaust 11575FLT, Headers, Shorty Style, for GM LS Engine Swaps, Universal, 304 Stainless Steel, 1-5\/8 primary, 2-1\/2 reducer, sold as a pair","id":39580859171041,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2500,"width":2500,"src":"\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap_2.webp?v=1772482686"},"aspect_ratio":1.0,"height":2500,"media_type":"image","src":"\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap_2.webp?v=1772482686","width":2500},{"alt":"Flowtech Exhaust 11575FLT, Headers, Shorty Style, for GM LS Engine Swaps, Universal, 304 Stainless Steel, 1-5\/8 primary, 2-1\/2 reducer, sold as a pair","id":39580859203809,"position":3,"preview_image":{"aspect_ratio":1.158,"height":3275,"width":3792,"src":"\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap_3.webp?v=1772482686"},"aspect_ratio":1.158,"height":3275,"media_type":"image","src":"\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap_3.webp?v=1772482686","width":3792},{"alt":"Flowtech Exhaust 11575FLT, Headers, Shorty Style, for GM LS Engine Swaps, Universal, 304 Stainless Steel, 1-5\/8 primary, 2-1\/2 reducer, sold as a pair","id":39580859236577,"position":4,"preview_image":{"aspect_ratio":1.119,"height":3305,"width":3697,"src":"\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap_4.webp?v=1772482687"},"aspect_ratio":1.119,"height":3305,"media_type":"image","src":"\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap_4.webp?v=1772482687","width":3697},{"alt":"Flowtech Exhaust 11575FLT, Headers, Shorty Style, for GM LS Engine Swaps, Universal, 304 Stainless Steel, 1-5\/8 primary, 2-1\/2 reducer, sold as a pair","id":39580859138273,"position":5,"preview_image":{"aspect_ratio":0.894,"height":1119,"width":1000,"src":"\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap_5.jpg?v=1772482686"},"aspect_ratio":0.894,"height":1119,"media_type":"image","src":"\/\/www.winnerscircle.com\/cdn\/shop\/files\/flowtech-11575flt-shorty-headers-ls-swap_5.jpg?v=1772482686","width":1000}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp class=\"MsoNormal\" style=\"mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman'; color: black;\"\u003eFlowtech designed these 11575FLT Shorty Style Headers specifically for GM LS Engine Swaps. Made from 304 Stainless Steel, they have 1-5\/8” mandrel bent primary tubes, 2-1\/2” collectors and a universal fit for GM LS1, LS2, LS3, LS6, LSX engines.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman'; color: black;\"\u003eThe 3\/8” thick header flanges provide a leak-free seal, and the 2-1\/2” reducers feature oxygen sensor bungs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman'; color: black;\"\u003ePremium gaskets and collector hardware come included.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman'; color: black;\"\u003eFlowtech Exhaust products are the perfect combination of quality and value!\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"MsoNormal\" style=\"mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal;\"\u003e\n\u003cb\u003e\u003cu\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman'; color: black;\"\u003eFlowtech 11575FLT Headers Features:\u003c\/span\u003e\u003c\/u\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.5pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003e\u003c\/span\u003e\u003c\/b\u003e\n\u003c\/h3\u003e\n\u003cul type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eHeader Style: Shorty\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003ePrimary Tube Diameter: 1.625 in.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eCollector Diameter: 2.500 in.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eCollector Attachment: 3-Bolt Flange\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eFlange Thickness: 0.375 in.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eMaterial: 304 Stainless Steel\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eFinish: Natural\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eGaskets Included: Yes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; color: windowtext;\"\u003eHardware Included: Yes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eQuantity: Sold as a pair\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"color: black; line-height: normal;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eA division of Holley, Flowtech focuses on high-performance exhaust components. Their easy-to-install products range from headers and manifolds to mufflers to complete systems, all designed to give performance and audible gains all at a very affordable cost.\u003c\/span\u003e\u003c\/p\u003e"}