{"product_id":"yoshimura-sound-insert-kit-rs-4-muffler-1-500-ring-ins-22-k","title":"Yoshimura SOUND INSERT KIT RS-4 Muffler, 1.500\" RING (INS-22-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 RS-4 Mufflers\u003c\/h2\u003e\n\u003cp class=\"trd-lead\"\u003eThe Yoshimura Sound Insert Kit RS-4 Muffler, 1.500\" ring (INS-22-K) is a replacement low-volume insert kit designed for Yoshimura RS-4 mufflers. It’s built to provide an optional sound-restriction setup when an application calls for different sound limits, with results that vary by application.\u003c\/p\u003e\n\u003cp class=\"trd-lead\"\u003eThis kit is listed for Honda CRF450X 2019–2026. Fitment details are application-specific, so the fitment table on the page should be used to confirm compatibility 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-22-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\u003cli class=\"trd-chip\"\u003e\n\u003cspan class=\"trd-chip-label\"\u003eFits\u003c\/span\u003e\u003cspan class=\"trd-chip-value\"\u003eHonda CRF450X\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 Low-Volume Insert\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eDesigned as a replacement low-volume insert kit for RS-4 mufflers, this setup provides an option for applications that require different sound restrictions. Yoshimura notes that decibel reduction depends on the specific application, so outcomes can vary by model and configuration.\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\"\u003eNon-Spark Arrested\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eThis insert kit is identified as non-spark arrested. It is intended for riders who specifically need a low-volume insert configuration, but spark-arresting functionality is not part of this kit as listed.\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 Hardware\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eThe kit includes the key components needed for installation: a low-volume insert tube, an end-cap collar, and a set screw. An installation PDF is provided on the page to support correct assembly and fitment verification.\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-22-k-rs4-main.jpg?v=1792280389\u0026amp;width=1400\" alt='Yoshimura SOUND INSERT KIT RS-4 Muffler, 1.500\" RING (INS-22-K) – Purpose-Built RS-4 Insert' 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 RS-4 Insert\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eYoshimura lists INS-22-K as a replacement low-volume insert kit for RS-4 mufflers, offering an optional approach for applications requiring different sound restrictions. Because sound output can vary across setups, Yoshimura specifies that decibel reduction depends on the application. For riders maintaining an RS-4 system, this service-part kit supports a consistent, component-correct solution.\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\"\u003eFitment and Confirmation\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eThis Yoshimura RS-4 sound insert kit is listed for Honda CRF450X 2019–2026. Since fitment and sound behavior can be application-specific, the page fitment information should be reviewed prior to purchase and installation. Yoshimura also recommends confirming compatibility using the insert chart referenced on the product page details.\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\"\u003eInstallation Essentials Included\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eINS-22-K is supplied with the parts called out by Yoshimura for the insert assembly: a low-volume insert tube, an end-cap collar, and a set screw. For guidance during installation, the page includes an installation PDF to reference during setup and assembly steps.\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-22-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\u003e00840025908789\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--fitment\"\u003e\u003ch2 class=\"trd-section-title\"\u003eFitment\u003c\/h2\u003e\n\u003cdiv class=\"trd-table-wrap\"\u003e\u003ctable class=\"trd-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eMake\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eModel\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eModel Years\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCRF450X\u003c\/td\u003e\n\u003ctd\u003e2019–2026\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp class=\"trd-caption\"\u003eFitment as listed by Yoshimura for part number INS-22-K.\u003c\/p\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-22-k-installation-manual.pdf?v=1792280385\" 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":68080839098519,"sku":"INS-22-K","price":40.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/4884\/6743\/files\/yoshimura-ins-22-k-rs4-main.jpg?v=1792280389","url":"https:\/\/allamericanktm.com\/products\/yoshimura-sound-insert-kit-rs-4-muffler-1-500-ring-ins-22-k","provider":"All American KTM","version":"1.0","type":"link"}