Vespa GTS/GTV/Super 300 OEM Roller (21x17 13.9g)

NOTE: Sold individually. Six (6) roller weights are required per variator assembly. Please update your quantity to 6 before checking out to ensure a complete transmission refresh. Restore factory-spec acceleration, smooth shifting, and top-end performance to your scooter with this Genuine Piaggio OEM Variator Roller Weight (MPN: 849480 ). Precision-calibrated to an exact weight of 13.9 grams and measuring 21x17mm, these factory original rollers ensure your Continuously Variable Transmission (CVT) shifts smoothly through its entire powerband. As centrifugal force pushes the rollers upward inside the variator pulley, the friction and heat of daily riding cause them to develop flat spots over time. Flat-spotted or worn rollers lead to erratic shifting, decreased top speeds, engine sluggishness, and vibrations. For optimal reliability, it is strongly recommended to replace all six roller weights every time you replace your drive belt or during standard 6,000-mile transmission services . Features & Benefits Genuine Factory Precision: Authentic Piaggio OEM replacement part ensures precise weight distribution across all rollers, preventing transmission imbalance and unwanted vibrations. Factory Calibrated Specs: Features the original 13.9-gram weight profiling optimized by factory engineers for perfect balance between low-end takeoff and top-end cruising speeds. Durable Outer Shell: Wrapped in a high-temperature, self-lubricating composite material designed to slide smoothly inside the variator ramps with minimal wear. Specifications Brand: Piaggio / Vespa OEM Manufacturer Part Number (MPN): 849480 Dimensions: 21mm Diameter x 17mm Width Weight: 13.9 Grams (per roller) Quantity Needed: 6 required per vehicle Fitment Engine Type: 250cc & 300cc 4-Stroke liquid-cooled (Quasar & HPE variants) Vehicle Fitment This individual roller weight is standard factory equipment on the following large frame models: Vespa GTS 250 / 300 (All variants including Super, SuperSport, SuperTech, and HPE engine setups) | 2005 – Present Vespa GTV 250 / 300 (Including Sei Giorni editions) | 2006 – Present Piaggio MP3 250 / 300 & BV 250 / 300 | All Years