{"product_id":"yoshimura-rs-12-slip-on-exhaust-suzuki-dr-z4s-116612s521","title":"Yoshimura - RS-12 Stainless Slip-On Muffler - 2025+ Suzuki DR-Z4S \u0026 DR-Z4SM","description":"\u003ch1\u003eRS-12 Stainless Slip-On, w\/ Stainless Muffler for the 2025+ Suzuki DR-Z4S and DR-Z4SM\u003c\/h1\u003e\n\u003cp id=\"p-rc_870380a166657ae4-491\"\u003e\u003cspan class=\"citation-1079 citation-end-1079\"\u003eThe Yoshimura RS-12 Enduro Series Slip-On Exhaust (116612S521) is a premium, 50-state emissions-legal performance upgrade for the completely redesigned 2025+ Suzuki DR-Z4S and DR-Z4SM.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e Developed and manufactured in the USA, this slip-on system drastically reduces overall vehicle weight by 4.4 pounds compared to the bulky factory muffler while delivering that deep, unmistakable Yoshimura exhaust note. \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003cp id=\"p-rc_870380a166657ae4-492\"\u003e\u003cspan class=\"citation-1078 citation-end-1078\"\u003eThe RS-12 features an asymmetrical, intelligently designed muffler profile that maximizes internal volume to help manage sound levels while increasing performance.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003cspan class=\"citation-1077 citation-end-1077\"\u003eRiders will experience a dyno-proven 4.1% increase in maximum horsepower at 8,000 RPM and a 2% boost in torque at 4,800 RPM.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003cspan class=\"citation-1076 citation-end-1076\"\u003eConstructed from high-grade stainless steel with Yoshimura’s exclusive \"Works Finish\", the exhaust is topped off with a sleek matte carbon fiber end cap.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003cspan class=\"citation-1075 citation-end-1075\"\u003eIt includes a pre-installed USFS-approved spark arrestor and a custom stainless steel heat shield, making it ready for the street and the trail right out of the box.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003ch4\u003eFeatures:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp id=\"p-rc_870380a166657ae4-493\"\u003e\u003cb\u003ePerformance Gains:\u003c\/b\u003e \u003cspan class=\"citation-1074 citation-end-1074\"\u003eDelivers a 4.1% increase in horsepower (@ 8,000 RPM) and a 2% increase in torque (@ 4,800 RPM).\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp id=\"p-rc_870380a166657ae4-494\"\u003e\u003cb\u003eWeight Reduction:\u003c\/b\u003e \u003cspan class=\"citation-1073 citation-end-1073\"\u003eShaves 4.4 lbs off the motorcycle compared to the OEM factory exhaust.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp id=\"p-rc_870380a166657ae4-495\"\u003e\u003cb\u003e50-State Legal:\u003c\/b\u003e \u003cspan class=\"citation-1072 citation-end-1072\"\u003eFully compliant with emissions regulations, keeping your dual-sport 100% street legal.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp id=\"p-rc_870380a166657ae4-496\"\u003e\u003cb\u003ePTF Insert System:\u003c\/b\u003e \u003cspan class=\"citation-1071 citation-end-1071\"\u003ePatent-pending Precision Taper Fit (PTF) ring simplifies the removal and installation of sound inserts and spark arrestors.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp id=\"p-rc_870380a166657ae4-497\"\u003e\u003cb\u003ePremium Construction:\u003c\/b\u003e \u003cspan class=\"citation-1070 citation-end-1070\"\u003eStainless steel muffler body with Yoshimura's durable \"Works Finish\" and an aggressive matte carbon fiber end cap.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp id=\"p-rc_870380a166657ae4-498\"\u003e\u003cb\u003eTrail Ready:\u003c\/b\u003e \u003cspan class=\"citation-1069 citation-end-1069\"\u003eIncludes a pre-installed USFS-approved spark arrestor for riding on public lands.\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat's in the Box:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e1x Yoshimura RS-12 Stainless Slip-On Muffler (Carbon End Cap)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp id=\"p-rc_870380a166657ae4-499\"\u003e\u003cspan class=\"citation-1068 citation-end-1068\"\u003e1x Custom Stainless Steel Heat Shield\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp id=\"p-rc_870380a166657ae4-500\"\u003e\u003cspan class=\"citation-1067 citation-end-1067\"\u003e1x USFS-Approved Spark Arrestor (Pre-installed)\u003csup class=\"superscript\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eModel-Specific Mounting Hardware\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInstallation Instructions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFitment:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch4\u003e2025–2026  Suzuki DR–Z4S \u0026amp; DR–Z4SM\u003c\/h4\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFitment Notes:\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eEmissions:\u003c\/b\u003e This is an Enduro Series slip-on, meaning it retains the factory catalytic converter located in the OEM header pipe, making it 50-state street legal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003e\u003cb\u003eWorks Finish Care:\u003c\/b\u003e The Yoshimura \"Works Finish\" is a unique surface treatment that undergoes a distinctive color change after it goes through heat cycles, developing a beautiful bronze patina over time. To maintain this finish and prevent spotting, clean the exhaust with mild soap and water, and occasionally wipe it down with a specialized stainless protectant or WD-40 after washing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSlip-On vs Full System:\u003c\/b\u003e Because the new 2025 DR-Z4S utilizes modern fuel injection and ride-by-wire technology, emissions equipment is tightly integrated into the chassis. Opting for a slip-on exhaust like this RS-12 allows you to drop substantial weight, gain throttle response, and drastically improve the exhaust sound without the hassle of ECU flashing or dealing with \"Check Engine\" lights commonly associated with removing the factory header and catalytic converter.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSound levels with spark arrestor (J2825 standards):\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e2000 RPM:\u003c\/strong\u003e Stock – 74.4 dB \/ RS-12 – 86.0 dB\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e5000 RPM:\u003c\/strong\u003e Stock – 84.4 dB \/ RS-12 – 89.3 dB\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.tmbrmoto.com\/collections\/yoshimura\" title=\"Shop TMBR MOTO for your Suzuki DR-Z4S exhaust and other parts and accessories.\"\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0622\/5720\/1317\/files\/YOSHIMURA_BANNER.jpg?v=1786999973\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0622\/5720\/1317\/files\/Made_In_The_USA_24865b83-5069-42c1-b4bc-9e28ee4fe2cb.jpg?v=1719961954\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eYoshimura part number:  116612S521\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Yoshimura","offers":[{"title":"Default Title","offer_id":45676929876133,"sku":"YOSH-RS-12-SLIP-DRZ4S","price":789.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/5720\/1317\/files\/Yoshimura_RS-12_Slip-On_Suzuki_DR-Z4S_116612S521.jpg?v=1787085576","url":"https:\/\/www.tmbrmoto.com\/products\/yoshimura-rs-12-slip-on-exhaust-suzuki-dr-z4s-116612s521","provider":"TMBR MOTO","version":"1.0","type":"link"}