NCY 50cc - 100cc Performance Variator for Scooters with 4-Stroke QMB139 Motors
Weight:0.9 kg
1200-1050This NCY PTFE-coated variator pulley helps your scooter's CVT transition smoothly and quickly as you accelerate, adding lightweight aluminum-alloy construction and a distinctive gold low-friction finish to your transmission. The coated roller tracks help keep debris from building up and reduce roller wear, making this pulley a useful starting point for tuning a compatible 139QMB or Genuine 50cc setup.
Key Features
- Gold PTFE-coated roller tracks: Promote smooth weight movement and help reduce debris accumulation, flat-spot wear, and improve acceleration due to lower friction than stock.
- Lightweight aluminum alloy: Housing is lighter than stock, improving acceleration due to lower rotating mass.
- 89mm pulley diameter: For matching small-scooter variator configurations.
- 16x13 tuning options: Uses compatible 16x13mm roller weights or sliding weights, sold separately.
- Individual pulley: Variator guide slides and roller/sliding weights are not included.
Technical Specifications
- Brand: NCY
- Part number: 1200-1050
- Manufacturer part number: 615A01DIOYE
- Product type: Variator pulley / movable pulley housing
- Material: Aluminum alloy
- Coating: Gold PTFE
- Inner diameter: 20 mm
- Outer diameter: 89 mm
- Height: 32.4 mm
- Weight: 5.29 oz
- Weight size: 16x13 mm, sold separately
- Guide slides: Sold separately
- Country of origin: Taiwan
Compatibility
| Application | Fitment details |
|---|---|
| 139QMB/QMB139 (GY50) 50cc four-stroke and compatible 80cc builds | Match the 20mm bore and 89mm diameter |
| Related engine configurations | 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB and 147QMD; matching variator dimensions required |
| Genuine | Buddy 50 and RoughHouse 50 with compatible variator configuration |
| Other existing applications | Compatible ZNEN, Trailmaster, Tao Tao and other Chinese-make scooter configurations |
Check the original pulley dimensions, variator components, and weight size before ordering. An engine code containing “QM” or “FM” alone does not establish compatibility. Select weight mass to suit your engine and CVT setup.
