6PC Racing Roller Set Variator Weights 20x15mm 8g 10g 13g 15g 19g for H 125 Aero Lead NH Pantheon S-Wing Spacy 125cc 4T for Scooter Tuning Acceleration and Speed Improvement Replacement Parts(20x15mm

Performance design: Improve acceleration response and power output, optimize the performance of the transmission system. Precise fit: The size is 20x15mm, which fits the standard transmission to ensure smooth operation. Acceleration performance: By adjusting the weight of the roller, the acceleration and starting performance are improved to improve the riding experience. Durable material: The wear-resistant material used is resistant to high temperatures and suitable for long-term use. Smooth power transmission: Reduce vibration during the speed change process to ensure stable power output.