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.

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.

• Patented Sliding Technology — eliminates flat-spotting and abnormal wear common in round roller weights
• 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 — high-tech, low-friction polymer composition reduces heat and wear on variator ramps
• Longer Lifespan — outlasts traditional round roller weights while maintaining consistent CVT variator performance; made in Taiwan by Dr. Pulley since 1987, ISO 9001 certified

Size: 15mm (Diameter) x 12mm (Width) | Weight Options: 3.0g, 3.5g, 4.0g, 4.5g, 5.0g, 5.5g, 6.0g, 6.5g, 7.0g, 7.5g, 8.0g, 8.5g, 9.0g, 9.5g, 10.0g | Quantity: Set of 6 | Material: Self-lubricating high-tech polymer | Patent: U.S. Patent No. 7276004 | Manufacturer: Dr. Pulley (Taiwan) | OEM SKU: 169-216 | ISO 9001 Certified

Engine Codes: 1PE40QMB, Minarelli Horizontal/Vertical, Yamaha A124E | Yamaha: Jog (1988-2001), Zuma CW50 (2002-2011), Vino (CW/XC50), C3 (XF50), 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 | MBK: Booster, Stunt, Nitro, Ovetto | Derbi: Atlantis, Bullet, Paddock, Predator, Scooter | Generic/Ital Jet/Chinese clones with Minarelli-style 50cc 2-stroke horizontal or vertical engine