{"product":{"id":11350218146134,"title":"Kooks 2 x 3-1\/2-inch Weld-Up Header Kit | WK2650","body_html":"\u003ch2\u003eShape the headers around your engine installation\u003c\/h2\u003e\u003cp\u003eFor a custom exhaust that needs 2-inch primaries and 3-1\/2-inch collector outlets, Kooks WK2650 supplies the major tube components together. Your fabricator can position the 304 stainless bends around the actual space in your project.\u003c\/p\u003e\u003cp\u003eSKU: WK2650\u003c\/p\u003e\u003ch2\u003eTwelve bends and two collectors\u003c\/h2\u003e\u003cp\u003eThe kit contains twelve JB-200-30-16-304 J-bends and two 9908S collectors. That gives you the primary tubing and collector ends for a pair of fabricated headers. The two 9908S collectors have a four-into-one slip-on design with a scavenging spike, 2-inch inside-diameter inlets and 3-1\/2-inch outside-diameter outlets. The inlets slip over the matching primary tubes, ready for your fabricator to position them.\u003c\/p\u003e\u003ch2\u003eChoose the cylinder-head connection\u003c\/h2\u003e\u003cp\u003eTwo header flanges are purchased separately. Match their port and bolt pattern to your heads, then establish steering, suspension and starter clearance before the tubes are finally welded.\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\u003eWK2650\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\u003e2-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-200-30-16-304 J-bends\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded collectors\u003c\/td\u003e\n\u003ctd\u003eTwo 9908S 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\u003eIncluded collector design\u003c\/td\u003e\n\u003ctd\u003eTwo 9908S four-into-one slip-on collectors with scavenging spikes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollector inlet \/ outlet\u003c\/td\u003e\n\u003ctd\u003e2-inch inside-diameter inlet \/ 3-1\/2-inch outside-diameter outlet\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\u003eAre the collectors included?\u003c\/h3\u003e\u003cp\u003eYes. Two 9908S collectors with 3-1\/2-inch outlets are included with twelve 2-inch J-bends.\u003c\/p\u003e\u003ch3\u003eCan I choose flanges for my engine?\u003c\/h3\u003e\u003cp\u003eYes. The two flanges are separate purchases so you can match the exact cylinder-head pattern needed for your fabrication 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":"2026-10-08T10:41:44+01:00","handle":"kooks-wk2650","updated_at":"2026-10-11T10:15:05+01:00","published_at":"2026-10-09T13:36:49+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":55646910185814,"product_id":11350218146134,"title":"Default Title","price":"950.67","sku":"WK2650","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-10-08T10:41:44+01:00","updated_at":"2026-10-11T10:15:05+01:00","taxable":true,"barcode":"842422180188","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":14512402137430,"product_id":11350218146134,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":86449303290198,"product_id":11350218146134,"position":1,"created_at":"2026-10-08T10:41:44+01:00","updated_at":"2026-10-08T10:41:47+01:00","alt":"Kooks 2\" x 3-1\/2\" 304 Stainless Steel Header Weld Up Custom Header Kit","width":1103,"height":762,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/5ce9f47c98eed524f13efb4c96a1bebe.jpg?v=1791452507","variant_ids":[]}],"image":{"id":86449303290198,"product_id":11350218146134,"position":1,"created_at":"2026-10-08T10:41:44+01:00","updated_at":"2026-10-08T10:41:47+01:00","alt":"Kooks 2\" x 3-1\/2\" 304 Stainless Steel Header Weld Up Custom Header Kit","width":1103,"height":762,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/5ce9f47c98eed524f13efb4c96a1bebe.jpg?v=1791452507","variant_ids":[]}}}