Dr. Pulley performance variator kit for Yamaha 125cc scooters, including the Zuma 125 (BWS), Vino 125, and Cygnus 125. Optimized ramp angles deliver a wider gear range and smoother, more aggressive shifting than stock. Precision-machined fan-fin cooling vanes on both sheaves reduce belt temperature and extend drivetrain life. Kit includes assembled drive face, fixed sheave, movable sheave with sliding weight ramps and guides, steel boss/spacer, and two O-rings. ISO 9001 manufactured in Taiwan. Sliding weights sold separately.
Kit Contents:
- Assembled drive face (fan-fin cooling vanes)
- Fixed sheave (fan-fin face)
- Movable sheave with sliding weight ramps and tan plastic guides
- Steel boss/spacer tube
- 2 O-rings
Note: Sliding weights are not included. Pair with Dr. Pulley 20x12 Sliding Weights to take full advantage of the ramp geometry.
Features
- Optimized ramp geometry — designed specifically for the Yamaha 125cc CVT platform
- Fan-fin cooling vanes on both sheaves for high-heat dissipation and extended belt life
- Precision-machined boss with vacuum-tight fit — reduces vibration and parasitic drag at high RPM
- 20-spline drive boss | 15-spline movable sheave bore | 118mm OD | 14mm ID
- ISO 9001 manufactured in Taiwan by Dr. Pulley
- For maximum gains, pair with an NCY Performance Exhaust
Specifications
- Brand: Dr. Pulley
- SKU: 1200-1206 | MPN: V 201201
- Variator outer diameter: 118mm
- Bore (ID): 14mm
- Drive boss splines: 20
- Movable sheave splines: 15
- Weight: 2.0 lbs
- ISO 9001 certified | Made in Taiwan
Model Fitment
| Make |
Model |
| Yamaha |
Zuma 125 (BWS) |
| Yamaha |
Vino 125 |
| Yamaha |
Cygnus 125 |
| Asia / Europe |
Cygnus X 125 (select generations) |
Off-road / competition use only. Performance upgrades are racing parts not intended for use on pollution-controlled vehicles. Check local laws before installing. Not covered under warranty.
