{"product":{"id":11350216212822,"title":"Kooks 3\" Tri-Core Round Muffler - R300-10-TC","body_html":"\u003ch2\u003eA round muffler for the exhaust you are building\u003c\/h2\u003e\u003cp\u003eThe Kooks R300-10-TC combines a polished stainless round body with the Tri-Core insert and 3\" inside-diameter inlet and outlet. 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. Shipping is charged separately.\u003c\/p\u003e","vendor":"Kooks","product_type":"Mufflers","created_at":"2026-10-08T10:41:36+01:00","handle":"kooks-r300-10-tc","updated_at":"2026-10-09T18:35:04+01:00","published_at":"2026-10-09T13:07:37+01:00","template_suffix":null,"published_scope":"global","tags":"brand:kooks, cat:exhausts, class:equipment-service-non-vehicle, dept:performance-parts, type:muffler","variants":[{"id":55646906810710,"product_id":11350216212822,"title":"Default Title","price":"115.18","sku":"R300-10-TC","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-10-08T10:41:36+01:00","updated_at":"2026-10-09T18:35:04+01:00","taxable":true,"barcode":"842422182403","grams":2722,"image_id":null,"weight":2.722,"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":14512399941974,"product_id":11350216212822,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":86449292869974,"product_id":11350216212822,"position":1,"created_at":"2026-10-08T10:41:36+01:00","updated_at":"2026-10-08T10:41:40+01:00","alt":"Kooks 3” Round Muffler with Tri-Core Insert. 10” Long Body. 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