{"product_id":"yoshimura-rs-12-stainless-full-exhaust-for-honda-crf300l-l-rally-123410s520","title":"Yoshimura RS-12 Stainless Full Exhaust for Honda CRF300L\/L-Rally – 123410S520","description":"\u003cdiv class=\"trd trd--yoshimura\"\u003e\n\u003csection class=\"trd-hero\"\u003e\u003cp class=\"trd-eyebrow\"\u003eYoshimura · RS-12 · Full System\u003c\/p\u003e\n\u003ch2 class=\"trd-headline\"\u003eRS-12 Stainless Full System for CRF300L\/Rally\u003c\/h2\u003e\n\u003cp class=\"trd-lead\"\u003eThe Yoshimura RS-12 Race Series Exhaust System is a stainless full system built to sharpen the riding experience of the Honda CRF300L 2021–2026 and Honda CRF300L-Rally 2021–2026. Designed as a complete replacement system, it targets riders looking for a stronger pull and a more distinctive exhaust character while keeping the package lightweight.\u003c\/p\u003e\n\u003cp class=\"trd-lead\"\u003eDeveloped and built in Chino, Ca., the RS-12 is backed by manufacturer-reported testing and is shown with supporting media on the page, including a dyno chart, product video, and an installation PDF. Check the fitment table below to confirm the exact application details for this full system.\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\"\u003e123410S520\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"trd-chip\"\u003e\n\u003cspan class=\"trd-chip-label\"\u003eMaterial\u003c\/span\u003e\u003cspan class=\"trd-chip-value\"\u003eStainless\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-12\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 CRF300L \/ CRF300L-Rally\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\"\u003eMaterials\u003c\/p\u003e\n\u003ch3 class=\"trd-card-title\"\u003eStainless Full System\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eBuilt as a Full System in the RS-12 series, this Race Series Exhaust System is specified as stainless construction. It’s intended as a complete system upgrade for the CRF300L and CRF300L-Rally platforms listed in the fitment table, with a design focus on performance and sound character.\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\"\u003ePerformance\u003c\/p\u003e\n\u003ch3 class=\"trd-card-title\"\u003eManufacturer-Reported Gains\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eYoshimura reports up to 6.8% more horsepower at 8. A dyno chart is shown on the page to support the published claim, helping riders evaluate the reported performance change in the context of the documented test results.\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\"\u003eEngineering\u003c\/p\u003e\n\u003ch3 class=\"trd-card-title\"\u003eWeight Reduction Focus\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eYoshimura’s product data highlights a lightweight approach for improved handling feel, listing the system at 9 lbs (vs. stock 12.3 lbs). That reduction is positioned as a benefit for agility and responsiveness when riding on mixed surfaces typical of the CRF300L and CRF300L-Rally.\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-123410s520-rs12-stainless-exhaust-view.jpg?v=1792266444\u0026amp;width=1400\" alt=\"Yoshimura RS-12 Stainless Full Exhaust for Honda CRF300L\/L-Rally – 123410S520 – Race Series RS-12 Design\" width=\"1400\" height=\"933\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv class=\"trd-story-copy\"\u003e\n\u003cp class=\"trd-label\"\u003eEngineering\u003c\/p\u003e\n\u003ch3 class=\"trd-story-title\"\u003eRace Series RS-12 Design\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003ePositioned in Yoshimura’s Race Series Exhaust System lineup, the RS-12 is engineered as a full-system solution rather than an add-on. The manufacturer describes the system as engineered, developed and built in Chino, Ca., emphasizing a purpose-built approach for the CRF300L and CRF300L-Rally platforms covered here. Stainless construction is specified in the product data, aligning with the rugged use these dual-sport models typically see.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"trd-story trd-story--reverse\"\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-123410s520-rs12-stainless-exhaust-view-2.jpg?v=1792266443\u0026amp;width=1400\" alt=\"Yoshimura RS-12 Stainless Full Exhaust for Honda CRF300L\/L-Rally – 123410S520 – Performance Backed by Data\" width=\"1400\" height=\"933\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv class=\"trd-story-copy\"\u003e\n\u003cp class=\"trd-label\"\u003ePerformance\u003c\/p\u003e\n\u003ch3 class=\"trd-story-title\"\u003ePerformance Backed by Data\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eFor riders choosing a full system primarily for output, the RS-12 includes a verified performance statement from the manufacturer. Yoshimura reports up to 6.8% more horsepower at 8. The page also includes a dyno chart and product video, allowing shoppers to review the provided supporting media alongside the manufacturer’s published claim.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\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-123410s520-rs12-stainless-exhaust-view-3.jpg?v=1792266444\u0026amp;width=1400\" alt=\"Yoshimura RS-12 Stainless Full Exhaust for Honda CRF300L\/L-Rally – 123410S520 – Fitment and Setup Resources\" width=\"1400\" height=\"933\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv class=\"trd-story-copy\"\u003e\n\u003cp class=\"trd-label\"\u003eFitment\u003c\/p\u003e\n\u003ch3 class=\"trd-story-title\"\u003eFitment and Setup Resources\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eThis RS-12 full system is listed for Honda CRF300L 2021–2026 and Honda CRF300L-Rally 2021–2026. Fitment is model- and year-specific, so the fitment table should be used to confirm application before purchase. For installation planning, an installation PDF is shown on the page, along with product photos and a video to help visualize routing, placement, and overall system layout.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"trd-section trd-section--performance\"\u003e\u003ch2 class=\"trd-section-title\"\u003ePerformance\u003c\/h2\u003e\n\u003cul class=\"trd-stats\"\u003e\u003cli class=\"trd-stat\"\u003eUp to 6.8% more horsepower at 8\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp class=\"trd-caption\"\u003eFigures as reported by Yoshimura.\u003c\/p\u003e\n\u003cfigure class=\"trd-figure\"\u003e\u003cimg class=\"trd-figure-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0585\/4884\/6743\/files\/yoshimura-123410s520-crf300l-dyno-chart.jpg?v=1792266443\u0026amp;width=1600\" alt=\"Yoshimura RS-12 Stainless Full Exhaust for Honda CRF300L\/L-Rally – 123410S520 – Yoshimura dyno chart\" width=\"1600\" height=\"1066\" loading=\"lazy\"\u003e\u003cfigcaption class=\"trd-caption\"\u003eYoshimura dyno chart for this system.\u003c\/figcaption\u003e\u003c\/figure\u003e\u003c\/section\u003e\u003csection class=\"trd-section trd-section--video\"\u003e\u003ch2 class=\"trd-section-title\"\u003eProduct Video\u003c\/h2\u003e\n\u003cdiv class=\"trd-video\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/2TCu0zdJ26s\" title=\"Yoshimura RS-12 Stainless Full Exhaust for Honda CRF300L\/L-Rally – 123410S520 video\" loading=\"lazy\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cdiv class=\"trd-video\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/HjlFSxgckl8\" title=\"Yoshimura RS-12 Stainless Full Exhaust for Honda CRF300L\/L-Rally – 123410S520 video\" loading=\"lazy\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen\u003e\u003c\/iframe\u003e\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\u003e123410S520\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\u003eRace Series Exhaust System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eRS-12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSystem Type\u003c\/th\u003e\n\u003ctd\u003eFull System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eStainless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSpark Arrester\u003c\/th\u003e\n\u003ctd\u003eNot included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eShipping Weight\u003c\/th\u003e\n\u003ctd\u003e14 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBarcode\u003c\/th\u003e\n\u003ctd\u003e00840025919488\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eEmissions Compliance\u003c\/th\u003e\n\u003ctd\u003eQUALIFIED MANUFACTURER DECLARED \"MODIFIED PART\"\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\u003eCRF300L\u003c\/td\u003e\n\u003ctd\u003e2021–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCRF300L-Rally\u003c\/td\u003e\n\u003ctd\u003e2021–2026\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 123410S520.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"trd-section trd-section--accessories\"\u003e\u003ch2 class=\"trd-section-title\"\u003eSound Inserts \u0026amp; Spark Arresters\u003c\/h2\u003e\n\u003cdiv class=\"trd-table-wrap\"\u003e\u003ctable class=\"trd-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003ePart Number\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eType\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eIncluded With This System\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSA-20-K\u003c\/td\u003e\n\u003ctd\u003eSpark Arrester\u003c\/td\u003e\n\u003ctd\u003eInstalled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eINS-34-K\u003c\/td\u003e\n\u003ctd\u003eSound Insert\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\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-123410s520-installation-manual.pdf?v=1792266438\" 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":68079557116055,"sku":"123410S520","price":849.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/4884\/6743\/files\/yoshimura-123410s520-rs12-stainless-exhaust-main.jpg?v=1792266444","url":"https:\/\/allamericanktm.com\/products\/yoshimura-rs-12-stainless-full-exhaust-for-honda-crf300l-l-rally-123410s520","provider":"All American KTM","version":"1.0","type":"link"}