Dr. Pulley
Dr. Pulley 16x13 Sliding Roller Weights - Performance CVT
Description
Upgrade your CVT system with Dr. Pulley 16x13 Sliding Roller Weights. Unlike traditional round weights, these uniquely shaped sliders allow the variator to open wider, increasing top-end speed while providing a more aggressive response off the line. Made in Taiwan from a proprietary self-lubricating nylon composite for maximum longevity and reduced friction.
Key Performance Benefits
- Sliding shape allows the variator to travel further than standard rollers — higher top speed
- Smoother, more consistent power band — eliminates flat spots
- Self-lubricating nylon composite protects variator ramp surfaces
- Long-lasting durability — reduces wear on both weights and variator
Weight Selection Guide
- Lighter (3.0g – 5.5g): Best for quick acceleration and hill climbing; runs at higher RPMs
- Standard (6.0g – 8.5g): Sweet spot for daily commuting and balanced performance
- Heavier (9.0g – 11g): Best for higher top speeds and lower RPM cruising on flat roads
Specifications
- Size: 16mm (diameter) x 13mm (width)
- Weight Options: 3g – 11g (select from dropdown)
- Quantity: 6 pieces per set
- Material: High-temp, low-friction nylon composite
- Made in Taiwan
Compatibility — Major Brands
| Brand | Models |
|---|---|
| Genuine Scooter Co. | Buddy 50, RoughHouse 50, Rattler 50, Black Duck 50 |
| Honda | Ruckus 50 (NPS50), Metropolitan CHF50 (2002–2012) |
| Yamaha | C3 (XF50), Vino 50 (4-stroke), Zuma 50F (4-stroke) |
| Kymco | Agility 50, People 50, 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 |
| Also fits | ZNEN, Jonway, Roketa, Peace Sports & more |
Compatibility — 139QMB Engine Codes
| 50cc / 80cc 4-Stroke Engine Codes | |||
|---|---|---|---|
| 139QMA | 139QMB | 1P39QMB | 1P39QMA-2 |
| YN139QMB | JJ1P39QMB | 139FMA-2 | BD1P39QMB |
| BN139QMB | 147QMD | Other QMA models | Other QMB models |
Performance tuning parts are intended for racing and off-road use. Professional installation and belt inspection are recommended when changing weights.
Product Diagrams
Specifications
Size: 16mm diameter x 13mm width | Weight options: 3g, 3.5g, 4g, 4.5g, 5.0g, 5.5g, 6.0g, 6.5g, 7.0g, 7.5g, 8.0g, 8.5g, 9.0g, 9.5g, 10g, 10.5g, 11g | Quantity: 6 per set | Material: High-temp low-friction nylon composite | Country of Origin: Taiwan | Engine compatibility: 50cc/80cc 4-stroke 139QMB and variants
Model Fitments
Honda Ruckus, Genuine Buddy 50, Genuine Roughhouse 50, Engines 50cc: 139QMA , 139QMB , 1P39QMB , 1P39QMA , 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, LJ139QMB as well as 147QMD (GY6 80cc) Brands: Amstar, Amigo, Ascend, Baotian, Bashan, Blade, Boom, Chicago Scooter Company, Dongfang, Roketa, Baotian, Bashan, BMS, Cool Sports, E Ton, Fly Wing, Eagle, Fly, Italica, Riya, Ice Bear, Jackel, Jet Moto, JCL, Taotao, Peace, JM Star, Jonway, Kazuma, Keeway, KMD, Kymco, Lance, Lifan, Linhai, Loncin, Longbo, Fuxin, Jiajue, Tao Tao, Tao Motors, Trailmaster, Maxtrade, Meitien, Motofino, Motorino, NST, Panterra, Panther, Qlink, Yiben, Red Streak, Redcat, Roketa, Schwinn, Strada, SYM, Tank, Terminator ,Tomberlin, TNG, United Motors, Vento, Vitacci, Wildfire, Wolf, X-Treme, X-Pro, Yongfu, ZNEN, Zhongneng , Zhilong, Geely, Wangye, ZH and more Manufactured by: Taizhou Zhongneng Motorcycle Co.; Jiangsu Zhongneng Motorcycle Co.; Jiangsu Meijunte Technology Co.; Taizhou Qianxin Vehicle Co.; Ningbo Dongfang Lingyun Vehicle Made Co.; Taizhou Zhilong Technology Co.; Zhejiang Jiajue Motorcycle Manufacturing Co.; Zhejiang Gelly Ming Industrial Co.; Taizhou City Senglong Motorcycle Manufacture Co.; Jiangsu Sacin Motorcycle Co.; Jiangsu Linhai Power Machinery Group Co.; Zheijiang TaoTao Vehicles Co.; Zhejiang Senling Motorcycle Co.; Sanmen County Yongfu Machine Co; Taizhou Jiaojiang Zhiwei Motorcycle Manufacture Co.; Huzhou Daixi Zhenhua Technology Trade Co.; Taizhou Zhongneng Motorcycle Co.; Zhejiang Riya Motorcycle Co.; Ningbo Longjia Motorcycle Co.; Taizhou Zhongneng Motorcycle Co.; and more
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Same day shipping for orders placed before 2PM (CST) M-F
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30-day return period on eligible items
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Flat-rate shipping for orders shipped to the 48 Contiguous United States.
