Dr. Pulley Sliding Weights (18x14): Buddy 125/150/170i & GY6

Ultimate CVT Performance: Dr. Pulley 18x14mm Sliding Weights

Standard roller weights operate by rolling up and down the variator ramps, which eventually leads to "flat-spotting" and inconsistent shifting. Dr. Pulley Sliding Weights revolutionize your transmission by sliding rather than rolling. This patented wedge-shaped design allows the weights to travel further in the ramps, effectively broadening your gear ratio for better low-end takeoff and increased top-end speeds.

Performance Advantages

• Broadened Gear Ratio: Allows the variator to open further for higher top speeds and close tighter for better low-end torque.
• Eliminate Flat Spots: The sliding movement prevents the uneven wear common in round rollers, significantly extending the service life of your transmission components.
• Enhanced Throttle Response: Improves re-acceleration properties, making your scooter feel more responsive when overtaking or climbing hills.
• Self-Lubricating Polymer: Made from a high-tech, low-friction material that resists heat and reduces wear on the variator ramps.

Technical Specifications

• Dimensions: 18mm (Diameter) x 14mm (Width)
• Quantity: Set of 6 Sliders
• Available Weights: 10.0g to 15.5g in .5g increments (Select from menu)
• Manufacturer: Dr. Pulley (ISO 9001 Certified)
• PFS SKU: 169-218

Detailed Model Fitment

These 18x14mm sliders are a precision fit for the following models and engine platforms:

Engine Code Reference: Fits 152QMI, 157QMJ, 161QMK, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, and BN161QMK-A.

Installation Note: Orientation is critical! Sliding weights must be installed in a specific direction to function correctly. Refer to the included diagram to ensure the "curved" side is facing the proper direction within the variator.

Tech Tip: If your engine code includes "QM" or "FM", this product is compatible with your vehicle. For the best result, we recommend choosing a weight 10-15% lighter than your stock round rollers for a balance of acceleration and top speed.

About Dr. Pulley: Dr. Pulley is the world's leading authority for aftermarket performance CVT parts for all popular powersports brands, including Polaris, Honda, Yamaha, Genuine, Vespa, SYM, Lance, KYMCO, and GY6 / QMB powered ATVs, Side-by-sides, quads, go-karts, mini-bikes, and scooters. Made in Taiwan with strict quality standards since 1987, Dr. Pulley is ISO 9001 certified.