{"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\u003eThis 2000 RPM compression\/contra spring is made for the Yamaha Zuma 50 2T and other compatible Minarelli two-stroke engines. It sits on the rear driven pulley and governs how the CVT behaves, helping it stay within the intended power range. If you are upgrading your \u003ca href=\"\/collections\/yamaha-zuma-parts\"\u003eYamaha Zuma scooter parts\u003c\/a\u003e, this spring affects how belt pressure is held and when upshifts happen under load.\u003c\/p\u003e\u003ch3\u003eFunctionality and Performance\u003c\/h3\u003e\u003cp\u003eThe red spring is a major factor in transmission tuning. Its added resistance helps the driven pulley keep steady pressure on the drive belt. As a result, the engine can hold its revs for longer during acceleration and remain in its effective power band.\u003c\/p\u003e\u003ch3\u003eInstallation and Compatibility\u003c\/h3\u003e\u003cp\u003eThe 2000 RPM label is a tuning rating, not an exact engagement speed. Before fitting, confirm that the spring's 44 mm inner diameter and 108 mm length suit your rear-pulley spring seats. This spring is built for two-stroke use and will not work on 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\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Yamaha Zuma 50 and compatible horizontal Minarelli two-stroke scooters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eCompatible with:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eYamaha Zuma 50\u003c\/li\u003e\n\u003cli\u003eChicago Scooter Company (CSC) 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\u003cli\u003eOther scooters with horizontal Minarelli engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to choose:\u003c\/strong\u003e Check the spring's 44 mm inner diameter, 108 mm length, and rear-pulley spring seats against your scooter 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":"Trend Times Toy Stores","offers":[{"title":"Default Title","offer_id":51138871394361,"sku":"TT-27202","price":17.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/2000-rpm-contra-spring-for-yamaha-zuma-50-2t-minarelli-standard-1.jpg?v=1794378439","url":"https:\/\/www.trendtimes.com\/products\/2000-rpm-contra-spring-for-yamaha-zuma-50-2t-minarelli-standard","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}