Dr. Pulley 15x12 Sliding Roller Weights:1PE40QMB Minarelli

Next-Gen CVT Tuning: Dr. Pulley 15x12mm Sliding Weights Standard roller weights rely on a rolling motion that eventually creates "flat spots," leading to sluggish acceleration and reduced top speeds. Dr. Pulley Sliding Weights utilize a patented wedge-shaped design that slides up and down the variator ramps. This unique movement allows the weights to travel further than traditional rollers, effectively broadening your gear ratio for a "best of both worlds" performance boost. Performance Advantages Patented Sliding Technology: Eliminates the abnormal wear and flat-spotting common in round weights, significantly extending service life. Broadened Gear Ratio: Achieves a lower "first gear" for explosive takeoffs and a taller "overdrive" for increased top-end speed. Enhanced Re-Acceleration: Dramatically improves throttle response when exiting corners or navigating traffic. Self-Lubricating Material: Composed of a high-tech, low-friction polymer that reduces heat and wear on your variator ramps. Technical Specifications Size: 15mm (Diameter) x 12mm (Width) Weight: Choose from 3g to 10g Quantity: Set of 6 Manufacturer: Dr. Pulley Original Parts For Scooters SKU 169-216 Full Fitment List (15x12mm) These weights are designed for Yamaha-based 50cc horizontal/vertical 2-stroke engines (Minarelli) . They do NOT fit Genuine Buddy/Roughhouse models. Brand Compatible Models (50cc 2-Stroke) Yamaha Jog (1988-2001), Zuma (2002-2011), Vino, C3, Aerox, Axis, Breeze, Neo's Aprilia SR 50 (Minarelli engine), Gulliver, Rally, Scarabeo, Sonic Adly Fox 50, Hammerhead 50, Noble 50, Thunderbike 50, Panther 50 Malaguti F10, F12 Phantom, F15 Firefox, Centro, Ciak Benelli 491 GT/RR, K2, Pepe, Naked 50 CPI / Keeway Hussar, Popcorn, F-Act, Hurricane, Matrix, RY8 Beta Ark, Chrono, Quadra, Tempo Italjet Dragster 50, Bazooka, Pista, Scoop, Reporter Common Engine Codes: 1PE40QMB, Minarelli Horizontal/Vertical, Yamaha A124E, and various Chinese 2-stroke clones. Critical Installation Note: Orientation matters! Sliding weights must be installed in a specific direction. Ensure the side with the Dr. Pulley logo and the "stepped" edge is positioned according to the included diagram. Tech Tip: For most 50cc Minarelli engines, a weight between 4.5g and 6.0g is the "sweet spot" for balancing acceleration and top speed. Original Parts For Scooters SKU 169-216 About Dr. Pulley: Dr. Pulley is the world's leading authority for aftermarket performance CVT parts for all popular powersports vehicles, including Polaris, BRP, Honda, Yamaha, Genuine, Vespa, SYM, Lance, KYMCO, and GY6 / QMB powered scooters. Made in Taiwan with strict quality standards since 1987, Dr. Pulley is ISO 9001 certified.