Dr. Pulley 20x12mm Sliding Roller Weights - Set of 6

Unlock the full gear range your CVT was designed for. Dr. Pulley 20x12mm sliding weights replace the flat-spotting round rollers in your variator with a patented non-round geometry that lets the variator retract further for a lower starting ratio and extend further for a higher top-speed ratio — delivering faster launches and lower cruising RPMs without touching your belt or variator. Choose your gram weight to dial in exactly the performance character you want. Set of 6.

Performance & Engineering Advantages:

• Eliminated flat spots: The sliding shape prevents uneven wear and notching common with circular weights, ensuring consistent shifting for thousands of miles
• Maximum gear range: Pushes the variator plate further than OEM specs for a tangible increase in top-end speed
• PA46 tribological composite: Oilless, self-lubricating nylon that resists heat and friction better than standard rollers — no grease required
• Precision gram tuning: Available in 8.5g through 12g (0.5g increments) to match your CVT to your riding style or exhaust setup

Specifications:

• Dimensions: 20mm diameter x 12mm width
• Material: Oilless PA46 Tribological Composite
• Shape: Patented sliding geometry (U.S. Patent 7,276,004)
• Available Weights: 8.5g, 9g, 9.5g, 10g, 10.5g, 11g, 11.5g, 12g
• Quantity: Set of 6
• SKU: 1200-1117
• Made in Taiwan

Compatibility:

Tuning Tips:

• Orientation is critical: Ensure the Dr. Pulley logo/flat side faces the correct direction in the variator ramps — incorrect installation will hinder performance and can cause damage
• For better acceleration: Go 1–2 grams lighter than stock
• For better top speed: Stay at stock weight or go 1 gram heavier

• Patented sliding geometry eliminates flat spots and variator notching
• Extends variator range beyond OEM for higher top speed and lower launch RPM
• PA46 oilless self-lubricating composite — no grease needed, heat and friction resistant
• Available in 8.5g–12g in 0.5g increments for precise CVT tuning
• Set of 6 per pack | U.S. Patent 7,276,004 | Made in Taiwan

Dimensions: 20mm diameter x 12mm width | Material: PA46 Tribological Composite | Shape: Patented Sliding | Weights: 8.5g, 9g, 9.5g, 10g, 10.5g, 11g, 11.5g, 12g | Qty: 6 per set | SKU: 1200-1117

Yamaha: Zuma 125 (all years), Vino 125, Majesty 250, Morphous 250, SMAX 155; Kymco: Downtown 200/300, People GT 200/300, Xciting 250/300; Linhai: 250/260/300; Trailmaster: 300S, 300 XRX