{"product_id":"yoshimura-spark-arrester-kit-rs-4-muffler-1-500-sa-04-k","title":"Yoshimura SPARK ARRESTER KIT RS-4 Muffler, 1.500\" (SA-04-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\"\u003eUSFS-Approved RS-4 Spark Arrester Kit\u003c\/h2\u003e\n\u003cp class=\"trd-lead\"\u003eThe Yoshimura SPARK ARRESTER KIT RS-4 Muffler, 1.500\" is a replacement spark arrester solution designed for RS-4 Off-Road Mufflers. It is intended for riders who need a USFS Approved Spark Arrester for their RS-4 setup, whether replacing an existing insert or adding an optional spark arrester on applications that were not originally equipped with one.\u003c\/p\u003e\n\u003cp class=\"trd-lead\"\u003eFitment includes select GasGas, Honda, Husqvarna, KTM, and Yamaha models and model years as listed in the fitment table below. The kit is supplied as a complete package with the spark arrester insert, end-cap collar, and set screw to help restore proper configuration on compatible RS-4 muffler applications.\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\"\u003eSA-04-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\"\u003eGasGas EX-250F \/ EX-350F \/ MC-250F \/ MC-350F; Honda crf450x; Husqvarna Norden-901; KTM 790-ADVENTURE \/ 890-ADVENTURE; Yamaha WR250F \/ YZ250F \/ YZ250FX\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\u003cp class=\"trd-label\"\u003eSound\u003c\/p\u003e\n\u003ch3 class=\"trd-card-title\"\u003eUSFS Approved Arrester\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eBuilt as a replacement USFS Approved Spark Arrester for RS-4 Off-Road Mufflers. This kit is designed to bring back the correct spark arrester configuration on compatible RS-4 applications when the original insert is worn, damaged, or missing.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"trd-card\"\u003e\u003cdiv class=\"trd-card-body\"\u003e\n\u003cp class=\"trd-label\"\u003eFitment\u003c\/p\u003e\n\u003ch3 class=\"trd-card-title\"\u003eOptional RS-4 Upgrade\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eFor applications not originally equipped with a spark arrester, this kit is offered as an optional spark arrester solution for compatible RS-4 muffler setups. It provides a straightforward path to configure an RS-4 off-road muffler with a spark arrester where applicable.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"trd-card\"\u003e\u003cdiv class=\"trd-card-body\"\u003e\n\u003cp class=\"trd-label\"\u003eInstallation\u003c\/p\u003e\n\u003ch3 class=\"trd-card-title\"\u003eComplete Kit Contents\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eIncludes the key components needed for installation: a spark arrester insert, an end-cap collar, and a set screw. For application-specific confirmation, reference the insert chart shown on the page to verify the correct match for the intended setup.\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-sa-04-k-rs4-main.jpg?v=1792281171\u0026amp;width=1400\" alt='Yoshimura SPARK ARRESTER KIT RS-4 Muffler, 1.500\" (SA-04-K) – Purpose-Built RS-4 Service Part' width=\"1400\" height=\"1000\" 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 Service Part\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eAs part of Yoshimura’s Replacement Service Parts line for the RS-4 series, this spark arrester kit is designed specifically for RS-4 Off-Road Mufflers using a 1.500\" configuration. It serves as a direct replacement-style solution for maintaining an RS-4 muffler’s spark arrester arrangement on compatible applications, helping keep the system properly equipped with the correct insert-style component.\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 Confirmation Matters\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eThis spark arrester kit is listed for specific GasGas, Honda, Husqvarna, KTM, and Yamaha models and model years. Because spark arrester and insert applications can vary, Yoshimura notes that the insert chart should be used to confirm fitment for a particular application. Review the fitment table on the page to ensure the motorcycle and year match what is specified for this kit.\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 Provided\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eThe page includes an installation PDF to support a correct install approach for this kit. With the included spark arrester insert, end-cap collar, and set screw, the kit is packaged to provide the necessary pieces for the intended RS-4 setup. Always verify fitment first, then follow the provided installation documentation for the appropriate procedure details.\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\u003eSA-04-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\u003e0.6 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBarcode\u003c\/th\u003e\n\u003ctd\u003e00840025909281\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\u003eGasGas\u003c\/td\u003e\n\u003ctd\u003eEX-250F\u003c\/td\u003e\n\u003ctd\u003e2023\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGasGas\u003c\/td\u003e\n\u003ctd\u003eEX-350F\u003c\/td\u003e\n\u003ctd\u003e2021–2023\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGasGas\u003c\/td\u003e\n\u003ctd\u003eMC-250F\u003c\/td\u003e\n\u003ctd\u003e2021–2023\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGasGas\u003c\/td\u003e\n\u003ctd\u003eMC-350F\u003c\/td\u003e\n\u003ctd\u003e2022–2023\u003c\/td\u003e\n\u003c\/tr\u003e\n\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\n\u003ctr\u003e\n\u003ctd\u003eHusqvarna\u003c\/td\u003e\n\u003ctd\u003eNorden-901\u003c\/td\u003e\n\u003ctd\u003e2022–2023\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKTM\u003c\/td\u003e\n\u003ctd\u003e790-ADVENTURE\u003c\/td\u003e\n\u003ctd\u003e2019–2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKTM\u003c\/td\u003e\n\u003ctd\u003e890-ADVENTURE\u003c\/td\u003e\n\u003ctd\u003e2021–2023\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eWR250F\u003c\/td\u003e\n\u003ctd\u003e2020–2023\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYZ250F\u003c\/td\u003e\n\u003ctd\u003e2019–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eYZ250FX\u003c\/td\u003e\n\u003ctd\u003e2020–2023\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 SA-04-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-sa-04-k-installation-manual.pdf?v=1792281168\" 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":68080842571927,"sku":"SA-04-K","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/4884\/6743\/files\/yoshimura-sa-04-k-rs4-main.jpg?v=1792281171","url":"https:\/\/allamericanktm.com\/products\/yoshimura-spark-arrester-kit-rs-4-muffler-1-500-sa-04-k","provider":"All American KTM","version":"1.0","type":"link"}