{"product_id":"bhir-1125968","title":"POLIN EXHAUST FOR RACE","description":"\u003cp\u003eProducts reserved exclusively for competitions in designated areas, in accordance with the provisions of the competent sports authorities. We assume no responsibility for improper use.\u003c\/p\u003e\u003cp\u003eBIG EVOLUTION MUFFLERS\u003c\/p\u003e\u003cp\u003ePolini Motori enlarges its mufflers range with the new Polini “BIG EVOLUTION” exhaust system developed to achieved the maximum power together with the Big Evolution cylinder, both for the L\/C Piaggio and horizontal Minarelli engines.\u003c\/p\u003e\u003cp\u003eIn order to achieve the best performance Polini has prepared two new mufflers models for Piaggio engines and two new models for the Minarelli engines.\u003c\/p\u003e\u003cp\u003eIn the details. one muffler is specific for the Ø47,6 – 70cc Big Evolution cylinders and the other one for the Ø 52- 84cc and 94cc Big Evolution cylinders.\u003c\/p\u003e\u003cp\u003eThe main technical features are:\u003c\/p\u003e\u003cp\u003eExhaust manifold flange with 3 holes to couple perfectly with the new cylinder and avoid possible gas escaping and power loss.\u003c\/p\u003e\u003cp\u003eThe manifold has been connected with a turned pipe to achieve the Venturi effect and improve the quantity of the gas scavenging and consequently favoring the power increase up to 14.000 rpm.\u003c\/p\u003e\u003cp\u003eThe visual look and its dimensions have been studied to have the maximum yield with the TORSEN WD\u003c\/p\u003e\u003cp\u003eThe silencer curve can be disassembled; it is possible to insert nozzles of different diameters to increase the engine revolutions.\u003c\/p\u003e\u003cp\u003eThe silencer, made of black anodized aluminum is slightly longer to contain noise and varies in the internal diameter which is bigger to improve the acceleration. The base is detachable to change the deadening material.\u003c\/p\u003e\u003cp\u003eAll these features improve the general engine performance; both in acceleration and in speed, for a fun drive at all the circuits.\u003c\/p\u003e\u003cp\u003e“BIG EVOLUTION” mufflers for Piaggio:\u003c\/p\u003e\u003cp\u003ePart no. 200.0286 – 70cc Muffler\u003c\/p\u003e\u003cp\u003ePart no. 200.0287 – 84cc and 94ccMuffler\u003c\/p\u003e\u003cp\u003e“BIG EVOLUTION” mufflers for Yamaha-Minarelli:\u003c\/p\u003e\u003cp\u003ePart no. 200.0288 – 70cc Muffler\u003c\/p\u003e\u003cp\u003ePart no. 200.0289 – 84cc and 94ccMuffler\u003c\/p\u003e","brand":"POLINI","offers":[{"title":"Default Title","offer_id":58525318218076,"sku":"1125968","price":672.75,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/5072\/8284\/files\/800Wx800H-1125968-1_b501d15e-9bfe-4330-b716-05fd293d4f6c.jpg?v=1785711342","url":"https:\/\/checkout.xparts.weostores.com\/products\/bhir-1125968","provider":"xparts","version":"1.0","type":"link"}