{"products":[{"id":11350216606038,"title":"Kooks 3-1\/2” Round Muffler 10” Long Body. Polished Stainless Steel.","handle":"kooks-r35-35-10","body_html":"\u003cp\u003eEstimated lead time: 4-6 weeks. Delivery may be faster depending on stock levels.\u003c\/p\u003e\u003cp\u003e3-1\/2” Round Muffler 10” Long Body.  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If a round muffler suits the space and pipe route under your car, the clearly defined body and connection dimensions help you plan the fit before fabrication.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e R300-10-TC\u003c\/p\u003e\u003ch2\u003eCheck the round-body clearance\u003c\/h2\u003e\u003cp\u003eThe body has a 4-1\/2\" outside diameter and a 10\" body length. Overall length is 15-1\/4\", including the necks. Allow room around the body as well as space for the complete muffler and its joints.\u003c\/p\u003e\u003ch2\u003eCompare the whole exhaust\u003c\/h2\u003e\u003cp\u003eChoose the Tri-Core muffler as part of the complete exhaust. Your engine, crossover and rear pipework all affect the finished sound, so compare systems similar to the one you are building.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\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\u003eR300-10-TC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial and finish\u003c\/td\u003e\n\u003ctd\u003ePolished stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesign\u003c\/td\u003e\n\u003ctd\u003eRound muffler with Tri-Core insert\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInlet and outlet\u003c\/td\u003e\n\u003ctd\u003e3\" inside diameter (ID)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody diameter\u003c\/td\u003e\n\u003ctd\u003e4-1\/2\" outside diameter (OD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody length\u003c\/td\u003e\n\u003ctd\u003e10\" body length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall length\u003c\/td\u003e\n\u003ctd\u003e15-1\/4\" overall length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003eOne muffler; sold individually\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFAQs\u003c\/h2\u003e\u003ch3\u003eIs 4-1\/2\" the connection size?\u003c\/h3\u003e\u003cp\u003eNo. It is the outside diameter of the round body. The inlet and outlet are 3\" inside diameter.\u003c\/p\u003e\u003ch3\u003eHow many mufflers are supplied?\u003c\/h3\u003e\u003cp\u003eOne muffler is supplied. Order the quantity your exhaust layout needs.\u003c\/p\u003e\u003ch3\u003eHow much length do I need?\u003c\/h3\u003e\u003cp\u003eAllow for 15-1\/4\" overall length, including the necks. The body itself is 10\" long.\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. 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Polished Stainless Steel.\u003c\/p\u003e\u003cp\u003eShipping is charged separately.\u003c\/p\u003e","published_at":"2026-10-09T13:38:15+01:00","created_at":"2026-10-08T10:41:35+01:00","updated_at":"2026-10-09T14:44:43+01:00","vendor":"Kooks","product_type":"Mufflers","tags":["brand:kooks","cat:exhausts","class:equipment-service-non-vehicle","dept:performance-parts","type:muffler"],"variants":[{"id":55646906581334,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"R300-10-CI","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"price":"117.46","grams":2268,"compare_at_price":null,"position":1,"product_id":11350216081750,"created_at":"2026-10-08T10:41:35+01:00","updated_at":"2026-10-09T14:44:43+01:00"}],"images":[{"id":86449290182998,"created_at":"2026-10-08T10:41:35+01:00","position":1,"updated_at":"2026-10-08T10:41:39+01:00","product_id":11350216081750,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/3e4b957bde57a721d3fc181e15f23b32_1e20acd3-0937-4a2a-8c0f-9b9eb2661a49.png?v=1791452499","width":1080,"height":1080},{"id":86449290215766,"created_at":"2026-10-08T10:41:35+01:00","position":2,"updated_at":"2026-10-08T10:41:39+01:00","product_id":11350216081750,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/e0fc23087e20539acd03d2ff77024527_324585c9-f67e-40a0-9cc8-189b98d2116b.png?v=1791452499","width":1080,"height":1080},{"id":86449290248534,"created_at":"2026-10-08T10:41:35+01:00","position":3,"updated_at":"2026-10-08T10:41:39+01:00","product_id":11350216081750,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/f74bc9889d17c027c607cd76a46fe342_8d7ca014-08b8-49a2-aa8f-1c24ff281b0f.png?v=1791452499","width":1080,"height":1080}],"options":[{"name":"Title","position":1,"values":["Default Title"]}]},{"id":11350215491926,"title":"Kooks 3-1\/2\" Whelen Modified Quad-Core Muffler - QCN350","handle":"kooks-qcn350","body_html":"\u003ch2\u003eFinish your Whelen Modified exhaust with a quad-core muffler\u003c\/h2\u003e\u003cp\u003eThe Kooks QCN350 is a directional quad-core muffler built to the NASCAR Whelen Modified specification. Its polished stainless steel body gives your race exhaust a clean finish, with a 3-1\/2\" ID inlet and a 3-1\/2\" OD outlet to match your pipework. Check the body and overall dimensions below when planning the space around it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e QCN350\u003c\/p\u003e\u003ch2\u003eMatch the inlet and outlet correctly\u003c\/h2\u003e\u003cp\u003eThe inlet is 3-1\/2\" inside diameter; the outlet is 3-1\/2\" outside diameter. Those are different joint interfaces, even though the nominal number is the same. The muffler is directional, so follow the intended flow orientation when fitting.\u003c\/p\u003e\u003ch2\u003eAllow room for the complete body\u003c\/h2\u003e\u003cp\u003eThe body has a 5\" outside diameter and an 8\" body length. Overall length is 16\". Match the footprint and connections to the exhaust design, and check the current rules and sound limits for the event you intend to enter.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\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\u003eQCN350\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication type\u003c\/td\u003e\n\u003ctd\u003eNASCAR Whelen Modified-specification race muffler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesign\u003c\/td\u003e\n\u003ctd\u003eDirectional; quad-core\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial and finish\u003c\/td\u003e\n\u003ctd\u003ePolished stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInlet\u003c\/td\u003e\n\u003ctd\u003e3-1\/2\" inside diameter (ID)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutlet\u003c\/td\u003e\n\u003ctd\u003e3-1\/2\" outside diameter (OD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody diameter\u003c\/td\u003e\n\u003ctd\u003e5\" outside diameter (OD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody length\u003c\/td\u003e\n\u003ctd\u003e8\" body length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall length\u003c\/td\u003e\n\u003ctd\u003e16\" overall length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003eOne muffler; sold individually\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFAQs\u003c\/h2\u003e\u003ch3\u003eAre both ends 3-1\/2\" inside diameter?\u003c\/h3\u003e\u003cp\u003eNo. The inlet is 3-1\/2\" ID and the outlet is 3-1\/2\" OD. Match each joint to that interface.\u003c\/p\u003e\u003ch3\u003eCan it be fitted in either direction?\u003c\/h3\u003e\u003cp\u003eIt is a directional muffler. Fit it in the intended flow orientation.\u003c\/p\u003e\u003ch3\u003eDoes the name guarantee acceptance at my event?\u003c\/h3\u003e\u003cp\u003eThe name identifies its specification. Check the current event requirements and sound limits for your complete race exhaust.\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","published_at":"2026-10-09T13:07:39+01:00","created_at":"2026-10-08T10:41:33+01:00","updated_at":"2026-10-09T14:44:43+01:00","vendor":"Kooks","product_type":"Mufflers","tags":["brand:kooks","cat:exhausts","class:equipment-service-non-vehicle","dept:performance-parts","type:muffler"],"variants":[{"id":55646904746326,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"QCN350","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"price":"110.30","grams":3629,"compare_at_price":null,"position":1,"product_id":11350215491926,"created_at":"2026-10-08T10:41:33+01:00","updated_at":"2026-10-09T14:44:43+01:00"}],"images":[{"id":86449277141334,"created_at":"2026-10-08T10:41:33+01:00","position":1,"updated_at":"2026-10-08T10:41:36+01:00","product_id":11350215491926,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/e8d0a129c497c77d1048e8fd5fa10d31_4eb09ed2-1e6e-43e1-bab5-f272fbe5eec2.jpg?v=1791452496","width":1200,"height":1200}],"options":[{"name":"Title","position":1,"values":["Default Title"]}]},{"id":11350215655766,"title":"Kooks 2-1\/2\" Round Muffler 14\" Long. Polished Stainless Steel.","handle":"kooks-r250-14","body_html":"\u003cp\u003eEstimated lead time: 4-6 weeks. Delivery may be faster depending on stock levels.\u003c\/p\u003e\u003cp\u003e2-1\/2\" Round Muffler 14\" Long. Polished Stainless Steel.\u003c\/p\u003e\u003cp\u003eShipping is charged separately.\u003c\/p\u003e","published_at":"2026-10-09T13:38:34+01:00","created_at":"2026-10-08T10:41:33+01:00","updated_at":"2026-10-09T14:44:43+01:00","vendor":"Kooks","product_type":"Mufflers","tags":["brand:kooks","cat:exhausts","class:equipment-service-non-vehicle","dept:performance-parts","type:muffler"],"variants":[{"id":55646905074006,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"R250-14","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"price":"81.67","grams":2722,"compare_at_price":null,"position":1,"product_id":11350215655766,"created_at":"2026-10-08T10:41:33+01:00","updated_at":"2026-10-09T14:44:43+01:00"}],"images":[{"id":86449277305174,"created_at":"2026-10-08T10:41:33+01:00","position":1,"updated_at":"2026-10-08T10:41:36+01:00","product_id":11350215655766,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/5cef64bbcc412f9f1b8d609b3a9b8bfa.jpg?v=1791452496","width":1600,"height":1600}],"options":[{"name":"Title","position":1,"values":["Default Title"]}]},{"id":11350212542806,"title":"Kooks 3\" Polished Oval Muffler, Centre \/ Centre - MUF-019","handle":"kooks-muf-019","body_html":"\u003ch2\u003eA polished finishing touch for your custom exhaust\u003c\/h2\u003e\u003cp\u003eThe Kooks MUF-019 gives a custom exhaust a polished stainless oval muffler with a centre\/centre pipe layout. Its longer body needs room, so use the full dimensions to position it neatly under the car and keep the pipe joints and surrounding parts clear.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e MUF-019\u003c\/p\u003e\u003ch2\u003eAllow for the body and the necks\u003c\/h2\u003e\u003cp\u003eThe oval body is 18\" long and measures 5-1\/4\" by 8-3\/8\". The complete muffler measures 21-3\/4\" overall. Plan the installation around the overall length, rather than treating the body length as the full fitting space.\u003c\/p\u003e\u003ch2\u003eStraight pipe alignment through the centre\u003c\/h2\u003e\u003cp\u003eBoth inlet and outlet are centred, with a 3\" inside diameter at each end. Match the muffler to the pipe route and available clearance. The polished finish gives exposed parts a bright metal appearance; actual sound depends on the whole exhaust.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\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\u003eMUF-019\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial and finish\u003c\/td\u003e\n\u003ctd\u003ePolished stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLayout\u003c\/td\u003e\n\u003ctd\u003eOval; centre inlet \/ centre outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInlet and outlet\u003c\/td\u003e\n\u003ctd\u003e3\" inside diameter (ID)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody size\u003c\/td\u003e\n\u003ctd\u003e5-1\/4\" by 8-3\/8\" oval body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody length\u003c\/td\u003e\n\u003ctd\u003e18\" body length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall length\u003c\/td\u003e\n\u003ctd\u003e21-3\/4\" overall length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003eOne muffler; sold individually\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFAQs\u003c\/h2\u003e\u003ch3\u003eIs 18\" the total length?\u003c\/h3\u003e\u003cp\u003eNo. The body is 18\" long; overall length including the necks is 21-3\/4\".\u003c\/p\u003e\u003ch3\u003eAre both connections centred?\u003c\/h3\u003e\u003cp\u003eYes. This is a centre-inlet, centre-outlet layout.\u003c\/p\u003e\u003ch3\u003eWill the dimensions tell me how quiet it is?\u003c\/h3\u003e\u003cp\u003eThey establish the fitting footprint. Noise and tone depend on the engine, catalysts, crossover and other exhaust parts.\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","published_at":"2026-10-09T13:07:34+01:00","created_at":"2026-10-08T10:41:22+01:00","updated_at":"2026-10-09T14:44:43+01:00","vendor":"Kooks","product_type":"Mufflers","tags":["brand:kooks","cat:exhausts","class:equipment-service-non-vehicle","dept:performance-parts","type:muffler"],"variants":[{"id":55646901010774,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"MUF-019","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"price":"377.53","grams":15876,"compare_at_price":null,"position":1,"product_id":11350212542806,"created_at":"2026-10-08T10:41:22+01:00","updated_at":"2026-10-09T14:44:43+01:00"}],"images":[{"id":86449242505558,"created_at":"2026-10-08T10:41:22+01:00","position":1,"updated_at":"2026-10-08T10:41:25+01:00","product_id":11350212542806,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/eedc0c296248f951a39494dafd78e685_c08061e0-3683-4268-9cec-cc1aa3c0db42.jpg?v=1791452485","width":3238,"height":2027},{"id":86449242538326,"created_at":"2026-10-08T10:41:22+01:00","position":2,"updated_at":"2026-10-08T10:41:26+01:00","product_id":11350212542806,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/d14b4899eac780e5f001760568273a46.jpg?v=1791452486","width":3348,"height":2451},{"id":86449242571094,"created_at":"2026-10-08T10:41:22+01:00","position":3,"updated_at":"2026-10-08T10:41:25+01:00","product_id":11350212542806,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/d71dc6353d0aca9fb6438695caf72bcf.jpg?v=1791452485","width":3192,"height":1896}],"options":[{"name":"Title","position":1,"values":["Default Title"]}]},{"id":11350211952982,"title":"Kooks 3\" Clamp-In Oval Muffler, Centre \/ Centre - KO300-12-CI","handle":"kooks-ko300-12-ci","body_html":"\u003ch2\u003eChange your exhaust without a welded muffler joint\u003c\/h2\u003e\u003cp\u003eThis Kooks clamp-in oval muffler gives a custom 3\" exhaust a polished stainless component that can be fitted without welding its joints. The centre inlet and centre outlet keep the pipe route straight through the middle of the body, while two supplied band clamps complete the slip connections.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e KO300-12-CI\u003c\/p\u003e\u003ch2\u003eCheck the space under your car\u003c\/h2\u003e\u003cp\u003eThe oval body measures 4-1\/2\" by 7-1\/2\", with a 12\" body length and 16\" overall length including the necks. Use the overall length when planning the pipe joints and the body dimensions when checking clearance to the floor and surrounding parts.\u003c\/p\u003e\u003ch2\u003eSlip connections with the clamps included\u003c\/h2\u003e\u003cp\u003eBoth ends have a 3\" inside diameter to slip over compatible 3\" tubing. The two 3\" band clamps are included. Support the surrounding exhaust properly and check the joints for leaks after fitting. The finished sound depends on the engine and the rest of your exhaust.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\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\u003eKO300-12-CI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial and finish\u003c\/td\u003e\n\u003ctd\u003ePolished stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLayout\u003c\/td\u003e\n\u003ctd\u003eOval; centre inlet \/ centre outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInlet and outlet\u003c\/td\u003e\n\u003ctd\u003e3\" inside diameter (ID), for slip connections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody size\u003c\/td\u003e\n\u003ctd\u003e4-1\/2\" by 7-1\/2\" oval body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody length\u003c\/td\u003e\n\u003ctd\u003e12\" body length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall length\u003c\/td\u003e\n\u003ctd\u003e16\" overall length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded clamps\u003c\/td\u003e\n\u003ctd\u003eTwo 3\" band clamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003eOne muffler; sold individually\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFAQs\u003c\/h2\u003e\u003ch3\u003eDo I need to weld it in?\u003c\/h3\u003e\u003cp\u003eThis is the clamp-in version, with slip connections and two band clamps supplied. The surrounding pipework must have the correct size, position and support.\u003c\/p\u003e\u003ch3\u003eDoes 3\" describe the outside diameter of the muffler necks?\u003c\/h3\u003e\u003cp\u003eIt describes the inside diameter at the inlet and outlet, allowing them to slip over compatible 3\" tubing.\u003c\/p\u003e\u003ch3\u003eHow many mufflers are supplied?\u003c\/h3\u003e\u003cp\u003eOne. Order the quantity your exhaust layout needs.\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","published_at":"2026-10-09T13:07:30+01:00","created_at":"2026-10-08T10:41:20+01:00","updated_at":"2026-10-09T14:44:43+01:00","vendor":"Kooks","product_type":"Mufflers","tags":["brand:kooks","cat:exhausts","class:equipment-service-non-vehicle","dept:performance-parts","type:muffler"],"variants":[{"id":55646900322646,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"KO300-12-CI","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"price":"144.78","grams":4536,"compare_at_price":null,"position":1,"product_id":11350211952982,"created_at":"2026-10-08T10:41:20+01:00","updated_at":"2026-10-09T14:44:43+01:00"}],"images":[{"id":86449230414166,"created_at":"2026-10-08T10:41:20+01:00","position":1,"updated_at":"2026-10-08T10:41:24+01:00","product_id":11350211952982,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/3a99aa7eac25f8cd8a16b6629a591a7d_9fa15b6b-f2d9-40b0-bc4e-4d95429b86a3.png?v=1791452484","width":1080,"height":1080},{"id":86449230446934,"created_at":"2026-10-08T10:41:20+01:00","position":2,"updated_at":"2026-10-08T10:41:23+01:00","product_id":11350211952982,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/abdc0a82edbfa9e7dd9b4a71227c35cf_67ffe809-7aeb-4c43-82d0-11234f741257.png?v=1791452483","width":1080,"height":1080},{"id":86449230479702,"created_at":"2026-10-08T10:41:20+01:00","position":3,"updated_at":"2026-10-08T10:41:23+01:00","product_id":11350211952982,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/7124d20e1fdff4fa04f2abc76b7bcff0_f52d8057-dd5b-4125-9bcf-367af6051918.png?v=1791452483","width":1080,"height":1080}],"options":[{"name":"Title","position":1,"values":["Default Title"]}]},{"id":11350212346198,"title":"Kooks 3\" Oval Muffler, Centre \/ Offset - MUF-018","handle":"kooks-muf-018","body_html":"\u003ch2\u003eGet the pipe route right on your custom exhaust\u003c\/h2\u003e\u003cp\u003eA centre\/offset muffler can help your exhaust fabricator place the inlet and outlet where the car needs them. The Kooks MUF-018 combines that layout with a stainless oval body and 3\" inside-diameter connections, making the pipe route and available clearance the key choices when planning the installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e MUF-018\u003c\/p\u003e\u003ch2\u003ePlan around the complete footprint\u003c\/h2\u003e\u003cp\u003eThe body is 12\" long and measures 5-1\/4\" by 8-3\/8\" across the oval. Overall length is 15-3\/4\", including the necks. Those are different measurements: allow for the full length at the joints as well as the width and depth of the body.\u003c\/p\u003e\u003ch2\u003eChoose by layout as well as diameter\u003c\/h2\u003e\u003cp\u003eThe inlet is centred and the outlet is offset. Match that arrangement to your pipe route before cutting or fabricating the exhaust. Sound will depend on the complete engine and exhaust combination; the dimensions alone do not establish a noise level.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\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\u003eMUF-018\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLayout\u003c\/td\u003e\n\u003ctd\u003eOval; centre inlet \/ offset outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInlet and outlet\u003c\/td\u003e\n\u003ctd\u003e3\" inside diameter (ID)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody size\u003c\/td\u003e\n\u003ctd\u003e5-1\/4\" by 8-3\/8\" oval body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody length\u003c\/td\u003e\n\u003ctd\u003e12\" body length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall length\u003c\/td\u003e\n\u003ctd\u003e15-3\/4\" overall length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003eOne muffler; sold individually\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFAQs\u003c\/h2\u003e\u003ch3\u003eWhat does centre\/offset mean?\u003c\/h3\u003e\u003cp\u003eThe inlet is in the middle of its end face and the outlet is offset. It changes the pipe route compared with a centre\/centre muffler.\u003c\/p\u003e\u003ch3\u003eWill it fit every 3\" exhaust?\u003c\/h3\u003e\u003cp\u003eMatch the connection size, overall length, body clearance and pipe positions. A 3\" diameter alone does not confirm space for the muffler.\u003c\/p\u003e\u003ch3\u003eIs this supplied as a pair?\u003c\/h3\u003e\u003cp\u003eIt is sold individually. Choose the quantity for your exhaust layout.\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","published_at":"2026-10-09T13:07:32+01:00","created_at":"2026-10-08T10:41:21+01:00","updated_at":"2026-10-09T14:44:43+01:00","vendor":"Kooks","product_type":"Mufflers","tags":["brand:kooks","cat:exhausts","class:equipment-service-non-vehicle","dept:performance-parts","type:muffler"],"variants":[{"id":55646900814166,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"MUF-018","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"price":"348.42","grams":5443,"compare_at_price":null,"position":1,"product_id":11350212346198,"created_at":"2026-10-08T10:41:21+01:00","updated_at":"2026-10-09T14:44:43+01:00"}],"images":[{"id":86449238671702,"created_at":"2026-10-08T10:41:21+01:00","position":1,"updated_at":"2026-10-08T10:41:25+01:00","product_id":11350212346198,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/479a51626b4f088898c5bfbe9a738206.jpg?v=1791452485","width":3617,"height":2111},{"id":86449238704470,"created_at":"2026-10-08T10:41:21+01:00","position":2,"updated_at":"2026-10-08T10:41:25+01:00","product_id":11350212346198,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/a4a87aa76d0a3bac9940a8f80126d696.jpg?v=1791452485","width":3450,"height":2362},{"id":86449238737238,"created_at":"2026-10-08T10:41:21+01:00","position":3,"updated_at":"2026-10-08T10:41:25+01:00","product_id":11350212346198,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/0d0bd681d649986e570cbd49dcafd519.jpg?v=1791452485","width":2348,"height":2176}],"options":[{"name":"Title","position":1,"values":["Default Title"]}]},{"id":11350212149590,"title":"Kooks 3\" Oval Muffler, Same-Side Offset \/ Offset - MUF-014","handle":"kooks-muf-014","body_html":"\u003ch2\u003eChoose the muffler that follows your pipework\u003c\/h2\u003e\u003cp\u003eThe Kooks MUF-014 is an oval stainless muffler with both inlet and outlet offset to the same side. That specific layout makes it useful when a custom exhaust needs the connections away from the centre of the body. Match the orientation and footprint to the installation before choosing it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e MUF-014\u003c\/p\u003e\u003ch2\u003eSame-side offsets matter\u003c\/h2\u003e\u003cp\u003eBoth connections are offset to the same side of the oval, rather than opposite sides. The inlet and outlet each have a 3\" inside diameter. Keep that orientation visible in your fabrication plan so the pipe route suits the vehicle.\u003c\/p\u003e\u003ch2\u003eCheck the fitting dimensions\u003c\/h2\u003e\u003cp\u003eThe body is 14\" long and measures 5-1\/4\" by 8-3\/8\". Overall length is 15-3\/4\". Check the full length at the joints and the oval body clearance before fitting. Muffler quantity and the finished sound depend on the exhaust you are building.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\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\u003eMUF-014\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLayout\u003c\/td\u003e\n\u003ctd\u003eOval; offset inlet \/ offset outlet, both on the same side\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInlet and outlet\u003c\/td\u003e\n\u003ctd\u003e3\" inside diameter (ID)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody size\u003c\/td\u003e\n\u003ctd\u003e5-1\/4\" by 8-3\/8\" oval body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody length\u003c\/td\u003e\n\u003ctd\u003e14\" body length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall length\u003c\/td\u003e\n\u003ctd\u003e15-3\/4\" overall length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003eOne muffler; sold individually\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFAQs\u003c\/h2\u003e\u003ch3\u003eAre the offsets on opposite sides?\u003c\/h3\u003e\u003cp\u003eNo. Both offsets are on the same side of the muffler.\u003c\/p\u003e\u003ch3\u003eWhat length should I use for fitting?\u003c\/h3\u003e\u003cp\u003eAllow for the 15-3\/4\" overall length. The 14\" measurement is the body length.\u003c\/p\u003e\u003ch3\u003eCan I choose it using pipe diameter alone?\u003c\/h3\u003e\u003cp\u003eCheck the offset arrangement, full length and body clearance as well as the 3\" connection size.\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. 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Stainless Steel.\u003c\/p\u003e\u003cp\u003eShipping is charged separately.\u003c\/p\u003e","published_at":"2026-10-07T12:41:09+01:00","created_at":"2026-10-07T11:44:41+01:00","updated_at":"2026-10-09T14:44:43+01:00","vendor":"Kooks","product_type":"Mufflers","tags":["brand:kooks","cat:exhausts","class:equipment-service-non-vehicle","dept:performance-parts","kooks-shipping-test-20261007","type:muffler"],"variants":[{"id":55630763393366,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"MUF-009","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"price":"317.88","grams":5443,"compare_at_price":null,"position":1,"product_id":11347551027542,"created_at":"2026-10-07T11:44:41+01:00","updated_at":"2026-10-09T14:44:43+01:00"}],"images":[{"id":86408548548950,"created_at":"2026-10-07T11:43:42+01:00","position":1,"updated_at":"2026-10-07T11:43:46+01:00","product_id":11347551027542,"variant_ids":[],"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/kooks-muf-009-shipping-test.jpg?v=1791369826","width":3327,"height":2357}],"options":[{"name":"Title","position":1,"values":["Default Title"]}]},{"id":11350211559766,"title":"Kooks 2-1\/2\" Oval Clamp In Muffler 12\" Long Body . 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