{"product_id":"yoshimura-sound-insert-kit-rs-4-muffler-1-500-ring-ins-23-k","title":"Yoshimura SOUND INSERT KIT RS-4 Muffler, 1.500\" RING (INS-23-K)","description":"\u003cdiv class=\"trd trd--yoshimura\"\u003e\n\u003csection class=\"trd-hero\"\u003e\u003cp class=\"trd-eyebrow\"\u003eYoshimura · RS-4\u003c\/p\u003e\n\u003ch2 class=\"trd-headline\"\u003eLow-Volume Insert Kit for Yoshimura RS-4\u003c\/h2\u003e\n\u003cp class=\"trd-lead\"\u003eThe Yoshimura SOUND INSERT KIT RS-4 Muffler, 1.500\" RING (INS-23-K) is a replacement low-volume insert kit designed specifically for Yoshimura RS-4 mufflers. It’s intended for riders who want an optional insert solution for setups that call for different sound restrictions, with decibel reduction varying by application.\u003c\/p\u003e\n\u003cp class=\"trd-lead\"\u003eThis kit is listed as non-spark arrested and is offered within Yoshimura’s Replacement Service Parts line. For proper application, confirm fitment using the insert chart shown on the page, and reference the included installation PDF for guidance before installation.\u003c\/p\u003e\n\u003cul class=\"trd-chips\"\u003e\n\u003cli class=\"trd-chip\"\u003e\n\u003cspan class=\"trd-chip-label\"\u003ePart Number\u003c\/span\u003e\u003cspan class=\"trd-chip-value\"\u003eINS-23-K\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"trd-chip\"\u003e\n\u003cspan class=\"trd-chip-label\"\u003eSeries\u003c\/span\u003e\u003cspan class=\"trd-chip-value\"\u003eRS-4\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003cdiv class=\"trd-cards trd-cards--3\"\u003e\n\u003carticle class=\"trd-card\"\u003e\u003cdiv class=\"trd-card-body\"\u003e\n\u003ch3 class=\"trd-card-title\"\u003eRS-4 Specific Insert\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eBuilt as a replacement low-volume insert kit for RS-4 mufflers, this Yoshimura set is intended to restore or add an insert option without guessing on sizing. The 1.500\" ring specification helps identify the correct style for the RS-4 configuration it’s designed for.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"trd-card\"\u003e\u003cdiv class=\"trd-card-body\"\u003e\n\u003ch3 class=\"trd-card-title\"\u003eOptional Sound Restriction\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eYoshimura lists this kit as an optional insert solution for applications that require different sound restrictions. Because results depend on the specific application, decibel reduction can vary—making it important to verify the correct insert selection for the intended setup.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"trd-card\"\u003e\u003cdiv class=\"trd-card-body\"\u003e\n\u003ch3 class=\"trd-card-title\"\u003eComplete Insert Components\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eThis kit includes the key parts needed for the insert assembly: a low-volume insert tube, an end-cap collar, and a set screw. It’s a straightforward way to replace worn or missing components while keeping the RS-4 muffler configured with a low-volume insert.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\n\u003c\/div\u003e\n\u003csection class=\"trd-story\"\u003e\u003cfigure class=\"trd-story-media\"\u003e\u003cimg class=\"trd-story-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0585\/4884\/6743\/files\/yoshimura-ins-23-k-rs4-main.jpg?v=1792280416\u0026amp;width=1400\" alt='Yoshimura SOUND INSERT KIT RS-4 Muffler, 1.500\" RING (INS-23-K) – Purpose-Built Service Part' width=\"1400\" height=\"933\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv class=\"trd-story-copy\"\u003e\n\u003cp class=\"trd-label\"\u003eSound\u003c\/p\u003e\n\u003ch3 class=\"trd-story-title\"\u003ePurpose-Built Service Part\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eINS-23-K is part of Yoshimura’s Replacement Service Parts lineup and is aimed at RS-4 muffler owners who need a dedicated low-volume insert kit. Rather than piecing together individual parts, this set provides the matched components called out by Yoshimura for the insert assembly so the RS-4 can be configured with a low-volume insert solution as intended.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"trd-story trd-story--text\"\u003e\u003cdiv class=\"trd-story-copy\"\u003e\n\u003cp class=\"trd-label\"\u003eFitment\u003c\/p\u003e\n\u003ch3 class=\"trd-story-title\"\u003eSound Insert Notes\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eYoshimura identifies this as a low-volume insert kit and notes that sound reduction depends on the application. It is also specified as non-spark arrested. To help ensure the correct choice for a particular setup, the page’s insert chart is the reference point to confirm fitment before ordering or installing.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"trd-story trd-story--text\"\u003e\u003cdiv class=\"trd-story-copy\"\u003e\n\u003cp class=\"trd-label\"\u003eInstallation\u003c\/p\u003e\n\u003ch3 class=\"trd-story-title\"\u003eConfirm Before Installing\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eBecause this is an application-dependent service part, verifying the correct insert selection is essential. Use the insert chart on the page to confirm fitment for the intended application, then follow the installation PDF provided on the product page for installation reference. This approach helps ensure the components are used in the correct RS-4 muffler configuration.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"trd-section trd-section--specs\"\u003e\u003ch2 class=\"trd-section-title\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"trd-table-wrap\"\u003e\u003ctable class=\"trd-table trd-table--specs\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003eINS-23-K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eYoshimura\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eProduct Line\u003c\/th\u003e\n\u003ctd\u003eReplacement Service Parts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eRS-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eShipping Weight\u003c\/th\u003e\n\u003ctd\u003e1 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBarcode\u003c\/th\u003e\n\u003ctd\u003e00840025908796\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"trd-section trd-section--docs\"\u003e\u003ch2 class=\"trd-section-title\"\u003eInstallation \u0026amp; Documents\u003c\/h2\u003e\n\u003cp class=\"trd-docs\"\u003e\u003ca class=\"trd-button\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0585\/4884\/6743\/files\/yoshimura-ins-23-k-installation-manual.pdf?v=1792280413\" target=\"_blank\" rel=\"noopener\"\u003eInstructions \/ What's Included (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"trd-caption\"\u003eProvided by Yoshimura. Opens in a new tab.\u003c\/p\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Yoshimura","offers":[{"title":"Default Title","offer_id":68080839131287,"sku":"INS-23-K","price":40.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/4884\/6743\/files\/yoshimura-ins-23-k-rs4-main.jpg?v=1792280416","url":"https:\/\/allamericanktm.com\/products\/yoshimura-sound-insert-kit-rs-4-muffler-1-500-ring-ins-23-k","provider":"All American KTM","version":"1.0","type":"link"}