{"product_id":"yoshimura-sound-insert-kit-rs-9-rs-9t-mufflers-1-250-dia-ins-rs9d-k","title":"Yoshimura SOUND INSERT KIT RS-9\/RS-9T Mufflers, 1.250\" dia. (INS-RS9D-K)","description":"\u003cdiv class=\"trd trd--yoshimura\"\u003e\n\u003csection class=\"trd-hero\"\u003e\u003cp class=\"trd-eyebrow\"\u003eYoshimura · RS-9\u003c\/p\u003e\n\u003ch2 class=\"trd-headline\"\u003eLow-Volume Sound Insert Kit for RS-9 Mufflers\u003c\/h2\u003e\n\u003cp class=\"trd-lead\"\u003eThe Yoshimura Sound Insert Kit for RS-9 and RS-9T mufflers is a low-volume insert solution designed to fine-tune exhaust sound while supporting performance goals. Yoshimura developed this insert to optimize sound and performance for the 2020 Honda CRF250R, and notes that it also works in all RS-9 and RS-9T mufflers.\u003c\/p\u003e\n\u003cp class=\"trd-lead\"\u003eThis kit is listed for Honda CRF250R 2018–2021, Honda CRF250RX 2020–2021, Honda CRF450R 2013–2015, and KTM RC390 2015. For application-specific confirmation, reference the fitment table and insert chart shown on the page.\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-RS9D-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-9\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 CRF250R \/ CRF250RX \/ CRF450R; KTM RC390\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\"\u003eLow-volume tuning option\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eDesigned as a low-volume insert kit for RS-9 and RS-9T mufflers, this setup offers an alternative for applications that require different sound restrictions. Yoshimura notes that decibel reduction will vary depending on the specific application.\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 insert\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eThis insert kit is identified as non-spark arrested. It is intended for riders who need a lower-volume configuration while using an RS-9 or RS-9T muffler, without changing the core muffler assembly.\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 kit parts\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eThe kit includes the low-volume insert tube along with an end-cap collar and a set screw. These components are designed to work together as a service-part solution for RS-9 and RS-9T muffler configurations.\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-rs9d-k-rs9-main.jpg?v=1792280626\u0026amp;width=1400\" alt='Yoshimura SOUND INSERT KIT RS-9\/RS-9T Mufflers, 1.250\" dia. (INS-RS9D-K) – Purpose-built sound control' 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 sound control\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eYoshimura positions this insert as a way to optimize sound and performance for the 2020 Honda CRF250R while maintaining compatibility across RS-9 and RS-9T mufflers. It serves as an optional configuration for riders who need to adapt to different sound restrictions without replacing the muffler, with results that can vary by application.\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 verification\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eThis Yoshimura RS-9 series insert kit is listed for Honda CRF250R 2018–2021, Honda CRF250RX 2020–2021, Honda CRF450R 2013–2015, and KTM RC390 2015. Because insert selection can depend on the exact setup, the page includes an insert chart and fitment table to help confirm the correct application before installation.\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 support included\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eAn installation PDF is provided on the product page to guide setup of the insert components. The kit format centers on a low-volume insert tube, end-cap collar, and set screw, offering a straightforward service-part approach for RS-9 and RS-9T muffler owners who want a different sound 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-RS9D-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-9\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\u003e00840025910447\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\n\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCRF250R\u003c\/td\u003e\n\u003ctd\u003e2018–2021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCRF250RX\u003c\/td\u003e\n\u003ctd\u003e2020–2021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCRF450R\u003c\/td\u003e\n\u003ctd\u003e2013–2015\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKTM\u003c\/td\u003e\n\u003ctd\u003eRC390\u003c\/td\u003e\n\u003ctd\u003e2015\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp class=\"trd-caption\"\u003eFitment as listed by Yoshimura for part number INS-RS9D-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-rs9d-k-installation-manual.pdf?v=1792280623\" 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":68080840343703,"sku":"INS-RS9D-K","price":36.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/4884\/6743\/files\/yoshimura-ins-rs9d-k-rs9-main.jpg?v=1792280626","url":"https:\/\/allamericanktm.com\/products\/yoshimura-sound-insert-kit-rs-9-rs-9t-mufflers-1-250-dia-ins-rs9d-k","provider":"All American KTM","version":"1.0","type":"link"}