Torque Drive Polini Speed Drive Evolution 3 Minarelli

With the Evolution3, Polini has developed a completely new drive system. The variator and pulleys are now almost entirely made of aluminum, making them significantly lighter than previous models. The variator halves feature a ceramic coating, whose durable, slightly rough surface helps reduce power losses.

• Brand: Polini
• SKU: U244.0574
• Availability: In stock

rear pulleyThe torque drive, also called secondary or driven pulley, is an integral part of the automatic transmission on scooters. It is the counterpart to the variator or front pulley and forms the rear drive unit. The rear pulley is located at the rear of the CVT housing and forms a unit with the clutch. As with the front pulley, there are also tuning versions of the rear pulley.Working of a CVT transmissionThe front and rear pulley (variator and torque driver) work together and are interdependent. At idle, the V-belt rides on its highest position on the rear pulley and on its lowest position on the front pulley. When you accelerate and engine speed increases, the drive pulley in front tu