{"title":"Velocity Stacks","description":"\u003cp\u003eBike-specific velocity stacks. Every design starts from the stock intake and is checked for fitment before release.\u003c\/p\u003e","products":[{"product_id":"yamaha-yzf-r6-velocity-stacks-carbon-fiber","title":"Yamaha YZF-R6 Velocity Stacks - Carbon Fiber","description":"\u003cp\u003e\u003cstrong\u003eA one-piece, four-funnel upper row and matching base plates for the Yamaha YZF-R6 YCC-I intake, shaped in computational fluid dynamics and printed in carbon-fiber nylon 12 (PA12-CF).\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe started from the original funnel shape, found where it loses air, and reshaped it. Every revision went through airflow simulation. We kept the one with the lowest pressure loss.\u003c\/p\u003e\n\u003ch3\u003eWhy they flow better\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbout 23% less intake pressure loss\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ethan the original design, averaged across the angled lip (CFD simulation).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir stays attached.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe original's thin lip lets flow separate at the entry. Our rolled lip shows no reverse flow at any section.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe gap grows with rpm.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4% less loss at 15 m\/s intake speed, 26% less at 45 m\/s.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth inner surface.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOne continuous flare from lip to seat, with no steps or ledges.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy carbon-fiber nylon 12\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e175 °C heat deflection temperature (PLA: 57 °C).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStiffness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOver twice the flexural modulus of PLA or PETG.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil and fuel resistant:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNylon 12 holds up to the oil mist and fuel vapor inside an airbox.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTough:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFlexes under impact instead of cracking.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 × four-funnel upper row (one piece)\u003c\/li\u003e\n\u003cli\u003e2 × base plates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eYamaha YZF-R6 with YCC-I (fit-checked on 2008). Contact us before ordering for other model years. You must use your original stack rails. This kit mounts directly onto them.\u003c\/p\u003e\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003eDirect replacement for the stock stack assembly. Uses your existing hardware and YCC-I linkage points. Check the YCC-I system moves freely through its full travel before starting the engine.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAirflow figures are steady-state CFD results (RANS, k-ω SST) comparing our funnel with the original design; they are not dyno results, and real-world gains depend on your bike and tune. Material values are typical dry lab values from PA12-CF and  PLA, PETG data sheets; printed parts vary. Not affiliated with Yamaha Motor Co. \"Yamaha\" and \"YZF-R6\" are used for fitment reference only. Intended for off-road\/track use; check your local emissions and equipment rules.\u003c\/small\u003e\u003c\/p\u003e","brand":"Rogue Performance","offers":[{"title":"Default Title","offer_id":52829448208516,"sku":null,"price":885.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1029\/4070\/4900\/files\/01_hero_1.png?v=1789595904"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1029\/4070\/4900\/collections\/02_studio.png?v=1789604142","url":"https:\/\/rogueperformanceusa.com\/collections\/velocity-stacks.oembed","provider":"Rogue Performance","version":"1.0","type":"link"}