{"product_id":"yoshimura-rs4-slip-on-exhaust-ss-cf-123402d520","title":"Yoshimura RS-4 Slip-On Exhaust - SS\/CF | Part# 123402D520","description":"\u003ch3\u003eYoshimura RS-4 Slip-On Exhaust System - Stainless Steel with Carbon Fiber\u003c\/h3\u003e\n\u003cp\u003eThe Yoshimura RS-4 Slip-On Exhaust System delivers superior performance and signature Yoshimura sound. Developed in collaboration with factory race teams, this slip-on features the iconic pentagonal muffler design that optimizes airflow for increased power and improved throttle response. Easy bolt-on installation makes this the perfect upgrade for riders seeking performance gains without a full system replacement.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentagonal Muffler Design:\u003c\/strong\u003e Signature RS-4 shape enhances aesthetics and airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximized Internal Volume:\u003c\/strong\u003e Optimized for improved exhaust efficiency and power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolyresonant Duplex Chamber:\u003c\/strong\u003e Boosts performance while refining exhaust tone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-Stage Core Baffle:\u003c\/strong\u003e Stepped design balances sound and performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark Arrestor Compatible:\u003c\/strong\u003e Versatile for street, track, and off-road use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound Insert Ready:\u003c\/strong\u003e Adjustable sound output options\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eConstruction \u0026amp; Materials:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStainless steel muffler body\u003c\/li\u003e\n\u003cli\u003eCarbon fiber end cap\u003c\/li\u003e\n\u003cli\u003eFactory-developed design\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant finish\u003c\/li\u003e\n\u003cli\u003eLightweight construction (12.8 lbs)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerformance Benefits:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncreased Horsepower:\u003c\/strong\u003e Improved exhaust flow unlocks hidden power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Throttle Response:\u003c\/strong\u003e Reduced backpressure for quicker acceleration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight Savings:\u003c\/strong\u003e Lighter than stock exhaust\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAggressive Sound:\u003c\/strong\u003e Deep, race-inspired exhaust note\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Bolt-on slip-on design, no cutting required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSound Customization:\u003c\/h3\u003e\n\u003cp\u003eThe RS-4's stepped, two-stage core baffle effectively manages sound levels while maintaining an aggressive exhaust tone. Compatible with optional sound inserts for quieter operation when needed, making it suitable for both street riding and track days.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Yoshimura\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e RS-4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 123402D520\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Slip-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel \/ Carbon Fiber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler Shape:\u003c\/strong\u003e Pentagonal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 12.8 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's Included:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRS-4 slip-on muffler\u003c\/li\u003e\n\u003cli\u003eMounting hardware\u003c\/li\u003e\n\u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003cli\u003eYoshimura quality guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation:\u003c\/h3\u003e\n\u003cp\u003eSimple bolt-on installation. Replaces stock muffler only - retains stock header and mid-pipe. Professional installation recommended for optimal fitment. All necessary mounting hardware included.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePerfect for:\u003c\/strong\u003e Riders seeking an easy performance upgrade with signature Yoshimura styling and sound. Ideal for street riders, weekend warriors, and track enthusiasts who want bolt-on power gains.\u003c\/p\u003e","brand":"YOSHIMURA","offers":[{"title":"Default Title","offer_id":47745332117745,"sku":"123402D520","price":639.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0626\/1348\/7857\/files\/04ce-659713f388203_8d73d1dd-e784-401b-b99b-576a4cba6428.jpg?v=1769650558","url":"https:\/\/howlingmoto.com\/products\/yoshimura-rs4-slip-on-exhaust-ss-cf-123402d520","provider":"Howling Moto","version":"1.0","type":"link"}