{"product_id":"roller-weight-set-prima-20-x-12-mm-yamaha-roll20x12","title":"Prima Roller Weight Set - 20x12mm for Yamaha Zuma \u0026 Vino 125","description":"\u003ch2\u003ePrecision CVT Tuning: Prima 20x12mm Roller Weight Set\u003c\/h2\u003e\u003cp\u003eDial in your scooter's performance with \u003cstrong\u003ePrima Precision Roller Weights\u003c\/strong\u003e. The weight of your rollers determines when your CVT \"shifts\" gears—changing these allows you to prioritize \u003cstrong\u003eoff-the-line snap\u003c\/strong\u003e or \u003cstrong\u003ehighway cruising efficiency\u003c\/strong\u003e. These 20x12mm rollers are manufactured to strict tolerances to ensure balanced rotation and smooth variator movement.\u003c\/p\u003e\u003ch3\u003ePerformance Profiles\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight Weights (e.g., 9g-10g):\u003c\/strong\u003e Best for quick acceleration, stop-and-go city riding, and improved hill climbing. Note: This may reduce top-end speed a bit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy Weights (e.g., 12g-14g):\u003c\/strong\u003e Ideal for long-distance commuting and maximizing top-end speed by keeping engine RPMs lower at high velocity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Composite:\u003c\/strong\u003e High-heat resistant outer shell designed to reduce \"flat-spotting\" and extend the service interval of your variator.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eComplete Model Fitment Guide\u003c\/h3\u003e\u003cp\u003eThese 20x12mm weights are a direct fit for 125cc+ Yamaha and European scooter platforms. \u003cstrong\u003eNote:\u003c\/strong\u003e Most 125cc models use 6 rollers per set.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eManufacturer\u003c\/th\u003e\n\u003cth style=\"text-align: left;\"\u003eCompatible Models\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eYamaha\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eZuma 125 (all years), Vino 125, SMAX 155, Majesty 125, BWS 125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEuropean Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMBK Cityliner 125, MBK Skycruiser 125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChinese\/Taiwanese\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLinhai 250\/260\/300, BMS 250, various 250cc touring scooters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 20mm (Diameter) x 12mm (Width)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 6 Weights per set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment Type:\u003c\/strong\u003e OEM Replacement \/ Performance Upgrade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e ROLL20X12\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003cblockquote\u003e\n\u003cstrong\u003ePro Tuning Tip:\u003c\/strong\u003e If you are a rider over 200lbs or have a stock motor, you will generally see the best results by leaning toward \u003cstrong\u003elighter weights\u003c\/strong\u003e. If you have installed a Big Bore Kit (BBK), \u003cstrong\u003eheavier weights\u003c\/strong\u003e are often required to keep the engine from \"over-revving\" past its new power band.\u003c\/blockquote\u003e\u003cp style=\"font-size: 0.85em; color: #666;\"\u003e\u003cem\u003eFor maximum longevity, we recommend applying a light coating of \u003ca href=\"#\"\u003ehigh-temp variator grease\u003c\/a\u003e to the roller ramps during installation.\u003c\/em\u003e\u003c\/p\u003e","brand":"Prima","offers":[{"title":"9.0 G","offer_id":46758378602776,"sku":"ROLL20X12 9.0 G","price":11.0,"currency_code":"USD","in_stock":true},{"title":"10.0 G","offer_id":46758378635544,"sku":"ROLL20X12 10.0 G","price":11.0,"currency_code":"USD","in_stock":true},{"title":"11.0 G","offer_id":46758378668312,"sku":"ROLL20X12 11.0 G","price":11.0,"currency_code":"USD","in_stock":true},{"title":"12.0 G","offer_id":46758378701080,"sku":"ROLL20X12 12.0 G","price":11.0,"currency_code":"USD","in_stock":true},{"title":"13.0 G","offer_id":46758378733848,"sku":"ROLL20X12 13.0 G","price":11.0,"currency_code":"USD","in_stock":true},{"title":"14.0 G","offer_id":46758378766616,"sku":"ROLL20X12 14.0 G","price":11.0,"currency_code":"USD","in_stock":true},{"title":"15.0 G","offer_id":46758378799384,"sku":"ROLL20X12 15.0 G","price":11.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/1728\/1816\/products\/ROLL20X12_80313cf5-ffc1-46f8-9739-bc18ce5b82a5.jpg?v=1695293282","url":"https:\/\/www.scooterworks.com\/products\/roller-weight-set-prima-20-x-12-mm-yamaha-roll20x12","provider":"Scooterworks USA, LLC","version":"1.0","type":"link"}