{"product_id":"outer-drive-face-vespa-gts-250-300-840193-aft","title":"Outer Drive Face - Vespa GTS 250\/300","description":"\u003ch3\u003ePremium Vespa GTS Outer Drive Face\u003c\/h3\u003e\u003cp\u003eStop letting a grooved, uneven, or glazed drive pulley degrade your scooter’s performance. This premium aftermarket outer drive face (fixed half-pulley) works in perfect unison with your variator to deliver crisp, predictable acceleration and smooth gear-ratio transitions. Engineered to meet strict factory tolerances, it replaces worn-out plates that cause premature drive belt wear and sluggish top-end speed.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cb\u003eRestores Smooth Acceleration:\u003c\/b\u003e Eliminates the deep ridges and grooves worn into the pulley face by old drive belts, restoring seamless CVT shifting.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cb\u003eIntegrated Turbine Cooling Fins:\u003c\/b\u003e Features precision-cast external fan blades that draw cool air through the transmission case to lower belt operating temperatures.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cb\u003eOEM-Spec Spline Machining:\u003c\/b\u003e Designed with a perfectly matched center spline pattern that locks tightly onto the crankshaft with zero slop or play.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cb\u003eOptimized Face Angle:\u003c\/b\u003e Engineered with the precise factory face angle to guarantee maximum belt contact, preventing slipping under heavy loads.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment Guide\u003c\/h3\u003e\u003cdiv class=\"horizontal-scroll-wrapper\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eEngine Compatibility\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eVespa\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eGTS 250 \/ 300 \/ Super \/ GTV\u003c\/td\u003e\n\u003ctd\u003eQuasar 250cc–300cc \u0026amp; Early HPE Engines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eVespa\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eGT 200 \/ Granturismo\u003c\/td\u003e\n\u003ctd\u003e200cc Liquid-Cooled Leader Engine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003ePiaggio\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eBV 250 \/ BV 300\u003c\/td\u003e\n\u003ctd\u003e250cc \u0026amp; 300cc Quasar Engines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003ePiaggio\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eMP3 250 \/ 300\u003c\/td\u003e\n\u003ctd\u003e250cc \u0026amp; 300cc Three-Wheel Models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eAprilia\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eAtlantic 250 \/ SportCity 250 \u0026amp; 300\u003c\/td\u003e\n\u003ctd\u003eAll Liquid-Cooled Quasar Configurations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eTechnical Specs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cb\u003eManufacturer Part Reference:\u003c\/b\u003e High-Quality Aftermarket \/ Replaces OEM 840193, 831375, 1A013202\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cb\u003eComponent Type:\u003c\/b\u003e Variator Fixed Outer Drive Face (Half-Pulley)\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cb\u003eSurface Coating:\u003c\/b\u003e Natural cast aluminum with ground friction face\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cb\u003eCooling Feature:\u003c\/b\u003e Radial air-induction cooling blades\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cb\u003ePackage Contents:\u003c\/b\u003e (1) Replacement Outer Drive Face Pulley\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cblockquote\u003e\n\u003cp style=\"text-align: left;\"\u003eMaintenance Note:\u003cstrong\u003e Every time you replace your CVT drive belt, run your fingernail flat across the face of this pulley. If you feel deep ruts, waves, or a highly polished “mirror” finish, the pulley is glazed or worn out. Running a brand new belt on a grooved drive face will destroy the sides of the belt within a few thousand miles.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003eInstallation Tip: \u003cstrong\u003eWhen tightening the variator nut over this drive face, always use a dedicated variator holding tool or a torque wrench set exactly to factory specification. Never zip it on blindly with an impact gun without verifying that the splines are fully engaged, or you risk stripping the crankshaft threads entirely.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003ePro Tip:\u003cstrong\u003e Make sure the thin spacer washer behind this drive face goes back on in the exact order it came off. Leaving this spacer out changes the resting width of the front pulley sheaves, which directly alters your low-end take-off gear ratio and can make your scooter feel incredibly sluggish off the line.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\u003cp\u003e\u003cstrong\u003eWARNING: \u003c\/strong\u003e\u003ca href=\"https:\/\/www.P65Warnings.ca.gov\" target=\"_blank\" title=\"California Proposition 65\" rel=\"noopener\"\u003eCalifornia Proposition 65 \u003c\/a\u003e\u003c\/p\u003e","brand":"RMS","offers":[{"title":"Default Title","offer_id":50895813378328,"sku":"840193-AFT","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/1728\/1816\/files\/840193-AFT.webp?v=1771965305","url":"https:\/\/www.scooterworks.com\/products\/outer-drive-face-vespa-gts-250-300-840193-aft","provider":"Scooterworks USA, LLC","version":"1.0","type":"link"}