Polini Aluminium EVO CNC Speed Drive pulley set for Piaggio/ Gilera/ Vespa 2-stroke engines.

The Polini Aluminium EVO CNC Speed Drive pulley set is designed for Piaggio 2-stroke scooters, featuring a precision-machined aluminium construction to improve CVT transmission performance. The redesigned driven pulley allows greater belt travel, helping the engine make better use of its available power.

The Speed Drive features two sets of guide grooves with different angles, allowing the transmission characteristics to be adjusted to suit the engine setup. Its optimised pulley geometry helps maintain engine RPM around the maximum torque range, improving power transmission and acceleration.

Features:
•CNC-machined aluminium construction,
•Enlarged driven pulley diameter,
•Two sets of guide grooves for different transmission characteristics,
•Groove angles of 36° and 38°,
•Designed to increase belt travel,
•Supplied with 12x18x3mm shim,
•Requires a longer drive belt,
•High-temperature-resistant grease recommended for lubrication.

Specifications:
•Pulley diameter: 134mm,
•Application: Piaggio 2-stroke scooters.

Important: Evolution transmission components, including belts, Speed Drives and springs, must be matched and assembled together. A suitable longer drive belt and Polini compression spring are required and should be ordered separately.

Polini 244.0585