Polini Half PulleyRef : POL00384A / 1126116

POLINI Air Speed Evolution Half-Pulley Self-Ventilated 14° - Manufacturer Ref: 244.0130

Designed for scooters equipped with a Polini Evolution PRE engine casing and for tuned Piaggio engines, this Polini Air Speed Evolution 14° half-pulley provides a targeted solution for cooling the transmission group. Machined from a solid aluminum alloy block and treated with anodization, it combines robustness with a wear-resistant finish.

• Integrated Self-Ventilation: Fins machined directly into the half-pulley to promote heat dissipation at the variator level.
• Solid Machining: Manufactured from a block of alloy for precise geometry and increased longevity.
• Designed for Tuned Engines: Recommended — and even mandatory — for Polini Big Evolution engines subjected to performance tuning, to ensure adequate cooling of the transmission system.
• Finish: Anodized treatment to limit corrosion and enhance aesthetic and mechanical durability.

Ideal for urban use and on lightweight roadsters, this half-pulley is aimed at tuners and riders concerned with the thermal management of their transmission. Examples of compatible models (depending on engine installation): PIAGGIO ZIP S 50 4T EURO 5, APRILIA SR 50 R, GILERA RUNNER 50 BLACK SOUL. 100% Made in Italy.