Dr. Pulley 16x13mm Sliding Roller Weights - Performance CVT for Scooters & Mopeds

Dr. Pulley 16x13mm Sliding Roller Weights for Scooters and Mopeds

These Dr. Pulley 16x13mm sliding roller weights are designed to upgrade the CVT setup on a scooter or moped. They take the place of standard round weights, allowing the variator to move farther, which can raise top speed and speed up acceleration. They are one of the scooter variators & roller weights that can noticeably change how a ride responds and how efficiently it runs.

Performance Advantages

Compared with standard rollers, these sliding weights let the variator travel more freely. The result is a smoother, steadier power delivery with fewer dead spots during acceleration. The self-lubricating nylon composite reduces friction and helps protect the variator ramp surfaces, which supports longer service life.

Weight Selection Guidance

Picking the correct weight matters for getting the most from your scooter. Lighter options (3.0g – 5.5g) work best for quick pickup and riding up hills. Mid-range weights (6.0g – 8.5g) offer a good compromise for everyday commuting. Heavier choices (9.0g – 11g) favor higher top performance and lower engine RPM on flat ground.

Specifications

• Material: High-temperature, low-friction nylon composite
• Size: 16mm diameter x 13mm width
• Quantity: 6 pieces per set
• OEM Part Number: 139QMA; 139QMB; 1P39QMB; 1P39QMA-2
• Fits: Buddy 50, RoughHouse 50, Rattler 50 and Black Duck 50; Honda Ruckus 50 and Metropolitan CHF50; Yamaha C3

Fitment

Fits:

• Buddy 50
• RoughHouse 50
• Rattler 50
• Black Duck 50
• Honda Ruckus 50 (NPS50)
• Honda Metropolitan CHF50 (2002-2012)
• Yamaha C3 (XF50)
• Yamaha Vino 50 (4-stroke)
• Yamaha Zuma 50F (4-stroke)
• Kymco Agility 50
• Kymco People 50
• Kymco Super 8 50 (4-stroke)
• TaoTao ATM50-A1, Pony 50, Thunder, VIP
• Wolf Brand RX-50, Islander, Lucky, Blaze
• Ice Bear Maddog 50cc, PMZ50 series
• Bintelli Breeze, Havoc, Scorch, Sprint
• ZNEN, Jonway, Roketa, Peace Sports (also fits)
• Engines 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, 147QMD (50cc/80cc 4-stroke)
• Other QMA and QMB models

How to choose: Find the engine code printed on your engine and check it against the listed codes, such as 139QMB or 1P39QMB, then select a weight between 3G and 11G.

Shop more: Scooter Variators & Roller Weights · Scooter Parts