Dr. Pulley 25x15 Sliding Roller Weights: Yamaha & Kymco -8pk

Standard round rollers roll. Dr. Pulley Sliders slide. This patented design allows your variator to open further and close faster, broadening your gear ratio for faster acceleration and higher top speed — without the premature wear of traditional round weights. Available in 13g, 14g, and 15g to suit your riding style.

Performance Benefits

• Faster Acceleration: Sliders reach the bottom of the ramp faster for immediate throttle response off the line.
• Increased Top Speed: The unique shape allows the pulley to close further, pushing the belt higher for maximum velocity.
• Extended Service Life: Self-lubricating PA46 tribological composite lasts 18% longer than standard weights with 22% less material loss.
• Anti-Flip Design: Eliminates roller flip and abnormal wear even during high-RPM operation.

Specifications

• Size: 25mm x 15mm
• Quantity: Set of 8
• Available Weights: 13g, 14g, 15g
• Material: Oilless PA46 Tribological Composite
• U.S. Patent: 7,276,004
• SKU: 169-344

Compatibility

Tuning Guide: For more acceleration, choose a weight 10-15% lighter than stock. For more top speed, match your factory roller weight.

Note: "Black Pearl" material available for select 13g weights. Orientation is critical — ensure the Dr. Pulley logo faces the correct direction during installation.

About Dr. Pulley

Dr. Pulley is a Taiwanese manufacturer and the originator of the patented sliding roller weight technology. Trusted by scooter tuners worldwide, Dr. Pulley products are engineered to deliver measurable CVT performance gains over standard round rollers.

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