{"product":{"id":11350217654614,"title":"Kooks 1-3\/4 x 3-1\/2-inch Weld-Up Header Kit | WK2250","body_html":"\u003ch2\u003eMake headers for the space your project gives you\u003c\/h2\u003e\u003cp\u003eKooks WK2250 gives your fabricator the 304 stainless bends and collectors for a custom 1-3\/4-inch-primary header. Shape the tubes around the installed engine and chassis, then connect the 3-1\/2-inch collector outlets to the exhaust you choose.\u003c\/p\u003e\u003cp\u003eSKU: WK2250\u003c\/p\u003e\u003ch2\u003eThe tube components are supplied\u003c\/h2\u003e\u003cp\u003eTwelve JB-175-25-18-304 J-bends and two 9904S collectors are included. The primary tube size and collector outlet size are clearly defined for planning the fabricated assembly.\u003c\/p\u003e\u003ch2\u003eAdd flanges that match your heads\u003c\/h2\u003e\u003cp\u003eTwo header flanges are required separately. Choose the actual cylinder-head port and bolt pattern, with final tube routing and clearance established before welding.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv class=\"table-scroll\"\u003e\u003ctable class=\"technical-specifications\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eWK2250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eWeld-up custom header fabrication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary tube diameter\u003c\/td\u003e\n\u003ctd\u003e1-3\/4-inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollector outlet diameter\u003c\/td\u003e\n\u003ctd\u003e3-1\/2-inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded bends\u003c\/td\u003e\n\u003ctd\u003eTwelve JB-175-25-18-304 J-bends\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded collectors\u003c\/td\u003e\n\u003ctd\u003eTwo 9904S collectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeader flanges\u003c\/td\u003e\n\u003ctd\u003eTwo flanges required; purchased separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e304 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhich parts are included?\u003c\/h3\u003e\u003cp\u003eTwelve JB-175-25-18-304 J-bends and two 9904S collectors. Two header flanges are purchased separately.\u003c\/p\u003e\u003ch3\u003eAre these finished headers for a particular vehicle?\u003c\/h3\u003e\u003cp\u003eThis is a weld-up kit for custom fabrication. The fabricator makes the final header shape for your project.\u003c\/p\u003e\u003ch2\u003eOrdering and delivery\u003c\/h2\u003e\u003cp\u003eEstimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.\u003c\/p\u003e","vendor":"Kooks","product_type":"Exhaust Fabrication Components","created_at":"2026-10-08T10:41:42+01:00","handle":"kooks-wk2250","updated_at":"2026-10-11T11:01:19+01:00","published_at":"2026-10-09T13:37:09+01:00","template_suffix":null,"published_scope":"global","tags":"brand:kooks, cat:exhausts, class:equipment-service-non-vehicle, dept:performance-parts, type:exhaust-fabrication-component","variants":[{"id":55646909399382,"product_id":11350217654614,"title":"Default Title","price":"901.91","sku":"WK2250","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-10-08T10:41:42+01:00","updated_at":"2026-10-11T11:01:19+01:00","taxable":true,"barcode":"842422180157","grams":20412,"image_id":null,"weight":20.412,"weight_unit":"kg","requires_shipping":true,"quantity_rule":{"min":1,"max":null,"increment":1},"price_currency":"GBP","compare_at_price_currency":"","quantity_price_breaks":[]}],"options":[{"id":14512401547606,"product_id":11350217654614,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":86449302110550,"product_id":11350217654614,"position":1,"created_at":"2026-10-08T10:41:42+01:00","updated_at":"2026-10-08T10:41:45+01:00","alt":"Kooks 1-3\/4\" x 3-1\/2\" 304 Stainless Steel Weld Up Custom Header Kit","width":1103,"height":762,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/d62fa362c3739229c3cd1da3ff199008_6db8f63e-349d-4584-8d4a-43d381fd120c.jpg?v=1791452505","variant_ids":[]}],"image":{"id":86449302110550,"product_id":11350217654614,"position":1,"created_at":"2026-10-08T10:41:42+01:00","updated_at":"2026-10-08T10:41:45+01:00","alt":"Kooks 1-3\/4\" x 3-1\/2\" 304 Stainless Steel Weld Up Custom Header Kit","width":1103,"height":762,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/d62fa362c3739229c3cd1da3ff199008_6db8f63e-349d-4584-8d4a-43d381fd120c.jpg?v=1791452505","variant_ids":[]}}}