Cvt Rear Pulley Speed Drive Evolution 3 Piaggio Nrg / Zip

Torque Drive Polini Speed Drive Evolution 3 Piaggio With the Evolution 3 line, Polini introduces a fully revised transmission series. The torque drive and pulley halves are now made almost entirely of aluminum, significantly reducing weight compared to previous versions. A version with ceramic coating is also available, designed to reduce power loss thanks to its durable, rough surface. The Evolution Speed Drive features an oversize torque driver with two linear guide slots, allowing a change in engine behavior. In combination with the Evolution variator and drive belt, the gear ratio range is extended. This helps maintain optimal power RPM across a wider band and delivers noticeably better acceleration. Specifications Polini Evolution 3 Speed Drive: High-end oversize torque drive Diameter: 134mm Aluminum pulley halves Includes pulley grease