{"product_id":"2000-rpm-contra-spring-for-yamaha-zuma-50-2t-minarelli-standard","title":"2000 RPM Contra Spring for Yamaha Zuma 50 2T \u0026 Minarelli (Standard)","description":"\u003ch2\u003e2000 RPM Contra Spring for Yamaha Zuma 50 2T and Minarelli Engines\u003c\/h2\u003e\u003cp\u003eThe 2000 RPM Compression\/Contra Spring is designed for the Yamaha Zuma 50 2T and compatible Minarelli two-stroke engines. This important component regulates the rear driven pulley, ensuring that your CVT operates effectively within the desired power range. It is one of the \u003ca href=\"\/collections\/yamaha-zuma-parts\"\u003eYamaha Zuma scooter parts\u003c\/a\u003e that can significantly improve your performance setup by maintaining belt pressure and controlling upshifts under load.\u003c\/p\u003e\u003ch3\u003eFunctionality and Performance\u003c\/h3\u003e\u003cp\u003eThis red spring plays a key role in transmission tuning. By providing higher resistance, it helps the driven pulley to maintain appropriate pressure on the drive belt. This allows the engine to sustain revs longer, keeping it within the effective power band during acceleration.\u003c\/p\u003e\u003ch3\u003eInstallation and Compatibility\u003c\/h3\u003e\u003cp\u003eThe 2000 RPM designation indicates a tuning rating rather than a specific engagement speed. Ensure that the spring’s inner diameter of 44 mm and length of 108 mm match your rear-pulley spring seats before installation. This spring is specifically designed for two-stroke applications and is not compatible with four-stroke models.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent:\u003c\/strong\u003e Rear driven-pulley compression \/ contra spring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTuning Rating:\u003c\/strong\u003e 2000 RPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire Diameter:\u003c\/strong\u003e 4.0 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Diameter:\u003c\/strong\u003e 44.0 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 108.0 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Red\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Taiwan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e 660A09OG20\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eThis contra spring is compatible with the following vehicles:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eYamaha Zuma 50cc two-stroke\u003c\/li\u003e\n\u003cli\u003eCSC Bella Classic 50\u003c\/li\u003e\n\u003cli\u003eCSC Go\u003c\/li\u003e\n\u003cli\u003eCSC Go Max\u003c\/li\u003e\n\u003cli\u003eCSC Nitro Sport 50\u003c\/li\u003e\n\u003cli\u003eCSC Pug 50\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNot sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShop more:\u003c\/strong\u003e \u003ca href=\"\/collections\/yamaha-zuma-parts\"\u003eYamaha Zuma Parts\u003c\/a\u003e · \u003ca href=\"\/collections\/minarelli-50cc-parts\"\u003eMinarelli 50cc \/ Yamaha Jog Parts\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-transmission\"\u003eScooter Transmission \u0026amp; Final Drive\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-parts\"\u003eScooter Parts\u003c\/a\u003e\u003c\/p\u003e","brand":"Magic Cars","offers":[{"title":"Default Title","offer_id":52859324825831,"sku":"25-914734","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2245\/9711\/files\/2000-rpm-contra-spring-for-yamaha-zuma-50-2t-minarelli-standard-1.jpg?v=1792234685","url":"https:\/\/www.magiccars.com\/products\/2000-rpm-contra-spring-for-yamaha-zuma-50-2t-minarelli-standard","provider":"MagicCars","version":"1.0","type":"link"}