
The POLINI 25 x 14.8 mm (12 g) rollers are a set of 8 weights designed for scooter riders looking to fine-tune their variator's response. Engineered for adjustment to the tenth of a gram, these rollers allow you to modify the rev-up speed and the transmission behavior in urban settings without heavy modifications.
These rollers are installed on the variator to modify the transmission ratio by affecting the inertia of the weights. By changing the weight, you can influence acceleration, response, and the shift RPM without altering the engine. Ideal for optimizing behavior in urban traffic, starting, and acceleration.
Practical compatibility: suitable notably for Yamaha T‑MAX 530 (SJ09) and derivatives mentioned in the applications. To ensure a consistent result, accompany this adjustment with a general check of the variator (movable pulley, belt, and guide roller).