{"product_id":"yoshimura-rs-4-stainless-full-exhaust-for-honda-crf450l-international-x-international-124500d320","title":"Yoshimura RS-4 Stainless Full Exhaust for Honda CRF450L-International\/X-International – 124500D320","description":"\u003cdiv class=\"trd trd--yoshimura\"\u003e\n\u003csection class=\"trd-hero\"\u003e\u003cp class=\"trd-eyebrow\"\u003eYoshimura · RS-4 · Full System\u003c\/p\u003e\n\u003ch2 class=\"trd-headline\"\u003eRS-4 Full Exhaust for CRF450L\/X International\u003c\/h2\u003e\n\u003cp class=\"trd-lead\"\u003eThe Yoshimura RS-4 Race Series Exhaust System is a full system designed for Honda CRF450L-International 2019–2025 and Honda CRF450X-International 2019. Built around a stainless system with an aluminum muffler, it’s aimed at riders who want a more capable exhaust setup for dual sport and off-road use.\u003c\/p\u003e\n\u003cp class=\"trd-lead\"\u003eThis International Model application is identified as not for use or sale in USA. Yoshimura developed this system to improve power delivery and make the bike easier to ride across a range of off-road conditions, while also reducing weight for a balanced overall package. See the fitment table below to confirm the exact model listing.\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\"\u003e124500D320\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-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 CRF450L-International \/ CRF450X-International\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 Full System\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eThis Race Series RS-4 setup is a complete full exhaust system for the international CRF450L\/X platform. It’s designed as an integrated package, pairing the system layout with Yoshimura’s RS-4 series design approach for dual sport and off-road riding needs.\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\"\u003eOff-Road Header Protection\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eThe header pipe uses a tucked-in routing intended to help keep it less exposed to damage in off-road conditions. Yoshimura also specifies a thicker 18 gauge header construction to provide better impact-protection where trail hazards and debris are common.\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\"\u003eO2 Sensor Bung\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eA lambda\/O2 sensor bung is included in the system design, supporting installations that require an oxygen sensor location. This detail helps streamline fitment on the specified international CRF450L and CRF450X applications.\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-124500d320-rs4-stainless-exhaust-main.jpg?v=1792266562\u0026amp;width=1400\" alt=\"Yoshimura RS-4 Stainless Full Exhaust for Honda CRF450L-International\/X-International – 124500D320 – Built for International CRF450L\/X\" 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\"\u003eBuilt for International CRF450L\/X\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eThis exhaust is specifically listed for Honda CRF450L-International 2019–2025 and Honda CRF450X-International 2019. It is identified as an International Model application and is stated as not for use or sale in USA. For exact model coverage, reference the fitment table on the page.\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-124500d320-rs4-stainless-exhaust-view.jpg?v=1792266561\u0026amp;width=1400\" alt=\"Yoshimura RS-4 Stainless Full Exhaust for Honda CRF450L-International\/X-International – 124500D320 – System Design for Off-Road Use\" width=\"1400\" height=\"934\" 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\"\u003eSystem Design for Off-Road Use\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eYoshimura developed the RS-4 system after getting access to the international CRF450L, focusing on improving power delivery while keeping the machine easier to manage in varied off-road conditions. Key design details include a tucked-in header layout intended to reduce exposure to impacts, along with a thicker 18 gauge header spec aimed at better impact-protection.\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-124500d320-rs4-stainless-exhaust-view-2.jpg?v=1792266562\u0026amp;width=1400\" alt=\"Yoshimura RS-4 Stainless Full Exhaust for Honda CRF450L-International\/X-International – 124500D320 – Configuration and Specs Overview\" width=\"1400\" height=\"933\" loading=\"lazy\"\u003e\u003c\/figure\u003e\u003cdiv class=\"trd-story-copy\"\u003e\n\u003cp class=\"trd-label\"\u003eMaterials\u003c\/p\u003e\n\u003ch3 class=\"trd-story-title\"\u003eConfiguration and Specs Overview\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eThis Yoshimura Race Series Exhaust System is an RS-4 full system with stainless listed as the material in the specifications table, and the product name calls out an aluminum muffler. Additional listed details include a shipping weight of 14 lb and barcode 00840025909717. The page also provides an installation PDF for reference during setup.\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\u003e124500D320\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-4\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\"\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\u003e00840025909717\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\u003eCRF450L-International\u003c\/td\u003e\n\u003ctd\u003e2019–2025\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCRF450X-International\u003c\/td\u003e\n\u003ctd\u003e2019\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 124500D320.\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-124500d320-installation-manual.pdf?v=1792266557\" 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":68079560949911,"sku":"124500D320","price":999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/4884\/6743\/files\/yoshimura-124500d320-rs4-stainless-exhaust-main.jpg?v=1792266562","url":"https:\/\/allamericanktm.com\/products\/yoshimura-rs-4-stainless-full-exhaust-for-honda-crf450l-international-x-international-124500d320","provider":"All American KTM","version":"1.0","type":"link"}