{"product_id":"yoshimura-rs-12-titanium-full-exhaust-with-titanium-muffler-for-honda-crf450r-rx-225871s720","title":"Yoshimura RS-12 Titanium Full Exhaust with Titanium Muffler for Honda CRF450R\/RX – 225871S720","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-12evo Titanium Full System for CRF450R\/RX\u003c\/h2\u003e\n\u003cp class=\"trd-lead\"\u003eThe Yoshimura RS-12evo Titanium Full Exhaust is a Signature Series full system built around the RS-12 platform and supplied with a titanium muffler. Designed specifically for Honda CRF450R 2027 and Honda CRF450RX 2027 models, it brings Yoshimura’s latest RS-12evo updates to a fit-focused package that nests with the stock side panel.\u003c\/p\u003e\n\u003cp class=\"trd-lead\"\u003eThis system is 109dB compatible and features an included INS-32-K sound insert. Key design elements like the hydroformed header primary, cast manifold, and resonator sections are engineered to enhance durability, simplify service, and refine the overall riding experience. See the fitment table below to confirm the exact 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\"\u003e225871S720\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\"\u003eTitanium\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 CRF450R \/ CRF450RX\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\"\u003eEngineering\u003c\/p\u003e\n\u003ch3 class=\"trd-card-title\"\u003eHydroformed titanium muffler\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eRS-12evo uses an all-new hydroformed titanium muffler shape designed to efficiently use the area near the airbox, subframe, and shock. Yoshimura engineered the fitment to nest with the stock side panel, delivering a custom tailored layout that supports clean packaging on the CRF450R\/RX platform.\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\"\u003eTechnology\u003c\/p\u003e\n\u003ch3 class=\"trd-card-title\"\u003eResonator-equipped RS-12evo design\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eA two-piece muffler resonator is incorporated to fine tune power, reduce sound, and further improve durability. The system also features a header resonator developed in cooperation with Honda HRC teams, intended to maximize power across the spectrum while enhancing rider connectivity.\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\"\u003eSound\u003c\/p\u003e\n\u003ch3 class=\"trd-card-title\"\u003ePrecision Taper Fit inserts\u003c\/h3\u003e\n\u003cp class=\"trd-card-text\"\u003eYoshimura’s Precision Taper Fit sound inserts are a patent pending system created for straightforward removal and installation of sound inserts and spark arrestors on RS-12 and RS-12evo mufflers. The exhaust includes the INS-32-K sound insert; spark arrester options are listed on the page.\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-225871s720-rs12-titanium-exhaust-main.jpg?v=1792269175\u0026amp;width=1400\" alt=\"Yoshimura RS-12 Titanium Full Exhaust with Titanium Muffler for Honda CRF450R\/RX – 225871S720 – Built around RS-12evo updates\" 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\"\u003eBuilt around RS-12evo updates\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eThis Signature Series Exhaust System carries Yoshimura’s RS-12evo development into a full-system configuration with a titanium muffler and titanium pipe material. It also features an all-new RS-12evo carbon end cap, created as part of Yoshimura’s continued focus on form and function for the RS-12 platform.\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-225871s720-rs12-titanium-exhaust-view.jpg?v=1792269175\u0026amp;width=1400\" alt=\"Yoshimura RS-12 Titanium Full Exhaust with Titanium Muffler for Honda CRF450R\/RX – 225871S720 – Header engineering for fit and durability\" 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\"\u003eHeader engineering for fit and durability\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eThe RS-12evo hydroformed header primary is designed to exactly match the oval exhaust port and provide a smooth internal transition from oval to round. Yoshimura notes increased durability through reduced welded connections, along with improved fit enabled by the repeatability of the hydroforming process. A cast manifold is used to add strength and durability while supporting easier installation and removal.\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-225871s720-rs12-titanium-exhaust-view-2.jpg?v=1792269175\u0026amp;width=1400\" alt=\"Yoshimura RS-12 Titanium Full Exhaust with Titanium Muffler for Honda CRF450R\/RX – 225871S720 – Model-specific fitment and setup\" 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\"\u003eModel-specific fitment and setup\u003c\/h3\u003e\n\u003cp class=\"trd-story-text\"\u003eDesigned for Honda CRF450R 2027 and Honda CRF450RX 2027, this full system is shaped to integrate closely with surrounding bodywork, including a fit that nests with the stock side panel. The system is 109dB compatible and ships with the INS-32-K sound insert installed as listed in the specifications. An installation PDF is provided on the page 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\u003e225871S720\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\u003eSignature 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\"\u003ePipe Material\u003c\/th\u003e\n\u003ctd\u003eTitanium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMuffler\u003c\/th\u003e\n\u003ctd\u003eTitanium Muffler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSound Insert (Included)\u003c\/th\u003e\n\u003ctd\u003eINS-32-K\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\u003e15 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eEmissions Compliance\u003c\/th\u003e\n\u003ctd\u003eQUALIFIED MANUFACTURER DECLARED \"REPLACEMENT 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\u003eCRF450R\u003c\/td\u003e\n\u003ctd\u003e2027\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCRF450RX\u003c\/td\u003e\n\u003ctd\u003e2027\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 225871S720.\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\u003eINS-32-K\u003c\/td\u003e\n\u003ctd\u003eSound Insert\u003c\/td\u003e\n\u003ctd\u003eYes\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\u003ctr\u003e\n\u003ctd\u003eSA-21-K\u003c\/td\u003e\n\u003ctd\u003eSpark Arrester\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-225871s720-installation-manual.pdf?v=1792269170\" 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":68079847768215,"sku":"225871S720","price":1799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/4884\/6743\/files\/yoshimura-225871s720-rs12-titanium-exhaust-main.jpg?v=1792269175","url":"https:\/\/allamericanktm.com\/products\/yoshimura-rs-12-titanium-full-exhaust-with-titanium-muffler-for-honda-crf450r-rx-225871s720","provider":"All American KTM","version":"1.0","type":"link"}