{"product_id":"poleas-de-embrague-polini-pre-evolution-2-piaggio-scooter-50-2t","title":"Pulleys Polini PRE Evolution 2 clutch for Piaggio 50 2T scooter ","description":"\u003cp\u003e\u003cstrong\u003ePolini Evolution PRE driven pulley kit Ø134 mm\u003c\/strong\u003e for \u003cstrong\u003ePiaggio scooter 50 2-Stroke\u003c\/strong\u003e engines.\u003c\/p\u003e\n\u003cp\u003eThe rear pulleys work together with the variator to \u003cstrong\u003econtinuously modify the transmission ratio\u003c\/strong\u003e. When the variator closes and forces the belt to rise on the front pulley, the rear driven pulley must open in a controlled manner to allow the belt to descend.\u003c\/p\u003e\n\u003cp\u003eDuring acceleration and recovery, the reverse process occurs. The \u003cstrong\u003econtra spring and pulley system\u003c\/strong\u003e determine how quickly the rear transmission closes again, keeping the belt under tension and helping the engine remain within its useful RPM range.\u003c\/p\u003e\n\u003cp\u003eIn a Racing engine this is especially important. If the rear pulley opens too quickly, too slowly or works with a spring that does not correspond, the engine may \u003cstrong\u003edrop out of the powerband when changing ratio, rev up without advancing properly or lose acceleration\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePolini specifies that the Evolution components must work together.\u003c\/strong\u003e The belt, the Speed Drive and the contra spring form a system calculated to work with compatible travel, tensions and diameters.\u003c\/p\u003e\n\u003cp\u003eFor the PRE configuration, Polini combines this pulley kit with the \u003cstrong\u003eEvolution belt 248.031.3\u003c\/strong\u003e and the \u003cstrong\u003eEvo-Slider contra spring 243.103\u003c\/strong\u003e. Altering any of these elements may completely change the behavior of the transmission.\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 PRE.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference:\u003c\/strong\u003e 244.0584.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e driven pulley \/ Speed Drive kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 134 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e Piaggio scooter 50 2-Stroke.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEvolution PRE belt:\u003c\/strong\u003e Polini 248.031.3.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEvo-Slider contra spring:\u003c\/strong\u003e Polini 243.103.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e CVT Racing transmission.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAPRILIA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMojito 50 2-Stroke Piaggio\u003c\/li\u003e\n\u003cli\u003eScarabeo 50 2-Stroke Street Restyling Piaggio\u003c\/li\u003e\n\u003cli\u003eSR 50 R \/ Factory 2-Stroke LC Piaggio\u003c\/li\u003e\n\u003cli\u003eSR 50 R \/ Factory 2-Stroke LC Euro 4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDERBI\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGP1 50 2001-2003\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGILERA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDNA 50\u003c\/li\u003e\n\u003cli\u003eEasy Moving 50\u003c\/li\u003e\n\u003cli\u003eRunner 50 \/ SP \/ Poggiali\u003c\/li\u003e\n\u003cli\u003eStalker 50\u003c\/li\u003e\n\u003cli\u003eStorm 50\u003c\/li\u003e\n\u003cli\u003eTyphoon 50 \u0026lt;1999\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePIAGGIO\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDiesis 50\u003c\/li\u003e\n\u003cli\u003eExtrem 50\u003c\/li\u003e\n\u003cli\u003eExtrem 50 LC\u003c\/li\u003e\n\u003cli\u003eFly 50 2-Stroke\u003c\/li\u003e\n\u003cli\u003eLiberty 50 2-Stroke\u003c\/li\u003e\n\u003cli\u003eMC2 50 1998\u003c\/li\u003e\n\u003cli\u003eNRG 50 \/ NTT \/ MC2\u003c\/li\u003e\n\u003cli\u003eNRG MC3 H2O\u003c\/li\u003e\n\u003cli\u003eNRG Power 50 2-Stroke Euro 4 2018-2020\u003c\/li\u003e\n\u003cli\u003eQuartz 50\u003c\/li\u003e\n\u003cli\u003eSfera 50 Restyling\u003c\/li\u003e\n\u003cli\u003eTyphoon 50 Euro 2 \u0026gt;2011\u003c\/li\u003e\n\u003cli\u003eZip 50 2-Stroke AC\u003c\/li\u003e\n\u003cli\u003eZip 50 2-Stroke AC \u0026gt;2000\u003c\/li\u003e\n\u003cli\u003eZip 50 SP 2-Stroke LC 1996-2000\u003c\/li\u003e\n\u003cli\u003eZip 50 SP 2-Stroke LC \u0026gt;2001\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eVESPA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eET2 50 2-Stroke\u003c\/li\u003e\n\u003cli\u003eLX 50 2-Stroke\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Polini indicates that the \u003cstrong\u003eEvolution belt, the Speed Drive and the Evolution contra spring must be installed exclusively together\u003c\/strong\u003e. Mixing this pulley with a belt or spring that does not correspond may alter the transmission travel, the operating RPM and the belt tension.\u003c\/p\u003e","brand":"Polini Motori s.p.a.","offers":[{"title":"Default Title","offer_id":67880628158855,"sku":"244.0585","price":279.75,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/6223\/5959\/files\/244.0585.webp?v=1793695478","url":"https:\/\/motoscoot.net\/en\/products\/pulleys-polini-clutch-pre-evolution-2-piaggio-50cc-2t-scooter","provider":"Motoscoot","version":"1.0","type":"link"}