The RDLN Racing Variator with tuning kit contains the complete drive pulley variator assembly and 3 complete sets of roller weights to improve the acceleration, top speed, and overall performance of your GY6 QMJ / QMK / QMI / QML CVT engine.

Benefits:

1. Modified ramp plate increases your engine's maximum power output
2. Copper core and wear-resistant nylon mean the roller weights last longer
3. The included roller weight tuning kit allows you to customize motor power output for acceleration and top speed.

Specifications:

• Variator Outer Diameter: 115mm
• Variator Inner Diameter: 24mm
• Bush Size Outer Diameter: 24mm
• Bush Size Inner Diameter; 15mm
• Bush Length: 51.5mm
• Roller Weight Size: 18x14 mm
• Set of 6 Roller Weights: 12g each
• Set of 6 Roller Weights: 13g each
• Set of 6 Roller Weights: 14g each

Compatibility:

This part is also compatible with 157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:

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", this product is compatible with your vehicle.

Roller Weight Tuning Kit information:

• Alternating different roller weights allows you to fine-tune your engine output characteristics. For example, by alternating 3- 12g rollers and 3- 13g rollers in the variator, you can achieve a 12.5g roller weight set.
• Lighter weights increase RPMs for a given road speed, while heavier weights lower RPMs for a given road speed.
• Tailor your tuning to match your engine setup and personal driving style.

*DANGER: Weights must be installed in a 120-degree pattern! If not, SEVERE ENGINE DAMAGE WILL RESULT!!!

About RDLN: RDLN is a premier line of aftermarket performance upgrade systems and components for scooters. RDLN products are engineered to significantly improve the function, performance, and reliability of your vehicle with the ultimate goal being an optimal balance of price, power, and performance. RDLN’s extensive field-testing network ensures each product exceeds customer requirements and expectations every time. RDLN delivers full-throttle performance at uncompromised quality.