The TFC Performance Variator Set is a premium, race-grade transmission upgrade for 125cc to 170cc GY6 engines. Engineered in Taiwan, this kit replaces your heavy stock front pulley with a lightweight, forged aluminum assembly designed to reduce rotational mass and significantly improve throttle response.

The variator features a specialized PTFE coating to minimize roller friction and heat, while the CNC-machined grooved sidewalls increase airflow to keep your CVT belt running cooler for longer. This kit is "tuner-ready," including three different sets of roller weights so you can perfectly balance your scooter for off-the-line torque or maximum top-end speed.

Performance Kit Includes:

• Forged Aluminum Variator: Features sidewall cooling grooves and a Red Teflon friction-reduction coating.
• CNC Drive Face: Lightweight, forged aluminum with a high-polish multicolor finish.
• 3 Sets of Roller Weights: Includes 10g, 11g, and 12g rollers for precision tuning.
• 15% Stiffer Torque Spring: Increases belt tension to prevent slippage during hard acceleration.
• Installation Hardware: Includes forged ramp plate, sliders, 14mm aluminum nut, and washers.

Technical Specifications:

• Material: CNC-Machined Forged Aluminum
• Engine Type: GY6 4-Stroke (125cc / 150cc / 170cc)
• Spline Count: Standard 19-Spline GY6 Crankshaft
• Origin: Made in Taiwan

Tech Tip: For the best results, start with the 11g "middle" weights. If you want more hill-climbing power, switch to the 10g rollers. If you want lower cruising RPMs and more top speed, use the 12g rollers. Always use a calibrated torque wrench for the 14mm variator nut.

Detailed Fitment & Compatibility:

This performance set is a direct bolt-on for the 152QMI, 157QMJ, and 161QMK engine platforms, including:

• Genuine Scooter Co: Buddy 125/150/170i, Hooligan 170i, Blur 150
• Wolf Brand Scooters: EX-150, Lucky II, Jet II, Rugby 150
• Tao Motor / TaoTao: Powermax 150, Lancer 150, Quantum 150
• Ice Bear: Maddog 150, Rocket 150
• Polaris: RZR 170 (Side-by-Side)
• Bintelli: Scorch, Havoc, Valor 150
• Various 150-170cc Models by: HHH, Trailmaster, X-Pro, Amigo Vitacci

157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:

Don't see your engine listed? If the engine code includes "QM" or "FM" along with a "5" or "6", this product is compatible with your vehicle.