{"product_id":"escape-polini-evolution-86-100cc-minarelli-am6","title":"Polini Evolution 86\/100cc Exhaust Minarelli AM6 ","description":"\u003cp\u003e\u003cstrong\u003ePolini Evolution Racing Exhaust\u003c\/strong\u003e for \u003cstrong\u003elarge-displacement Minarelli AM6 engines\u003c\/strong\u003e, developed to work with the \u003cstrong\u003ePolini Big Evolution Cylinder ref. 133.1012\u003c\/strong\u003e and Racing setups of approximately 86-100cc.\u003c\/p\u003e\n\u003cp\u003eIn a tuned 2-Stroke engine, the exhaust is a fundamental part of the setup. It does not merely evacuate gases: the shape and length of its cones generate \u003cstrong\u003epressure waves that help empty the cylinder and return part of the fresh mixture to the chamber\u003c\/strong\u003e before the exhaust port closes.\u003c\/p\u003e\n\u003cp\u003eWhen we increase displacement, timing, and operating speed, an exhaust designed for 50\/70cc quickly becomes a restriction. The engine needs a chamber with \u003cstrong\u003egreater volume and geometry adapted to the gas flow\u003c\/strong\u003e moved by an 86-94cc Racing Cylinder.\u003c\/p\u003e\n\u003cp\u003eThe Evolution is designed precisely to work in that range. When the exhaust enters resonance, the waves generated by the chamber help improve cylinder filling, allowing the engine to \u003cstrong\u003ecome strongly into the power band and continue breathing at high RPM\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis also explains why it is not an exhaust intended for a small cylinder. An engine with low displacement or overly conservative timing does not generate the flow or operate in the range for which this chamber is designed, so the assembly may lose response and end up completely outside its operating zone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe exhaust must work together with the rest of the engine.\u003c\/strong\u003e In a setup of this level, we recommend pairing it with a large-diameter carburetor, Racing intake, reinforced crankshaft, upgraded clutch, and correctly adjusted ignition. If one of these elements limits flow or operating speed, the engine will not be able to take full advantage of the expansion chamber.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical characteristics\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Polini.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange:\u003c\/strong\u003e Evolution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference:\u003c\/strong\u003e 200.0422.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e Minarelli AM6 2-Stroke.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Racing expansion chamber exhaust.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended displacement:\u003c\/strong\u003e large-displacement Racing setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Polini Cylinder:\u003c\/strong\u003e Big Evolution 94cc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder reference:\u003c\/strong\u003e 133.1012.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolini Cylinder diameter:\u003c\/strong\u003e 52 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolini Cylinder stroke:\u003c\/strong\u003e 44 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e competition.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMinarelli AM6\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Polini Motori s.p.a.","offers":[{"title":"Default Title","offer_id":67881158115719,"sku":"200.0530","price":337.83,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/6223\/5959\/files\/200.0530.webp?v=1793790309","url":"https:\/\/motoscoot.net\/en\/products\/polini-evolution-86-100cc-exhaust-minarelli-am6","provider":"Motoscoot","version":"1.0","type":"link"}