Transmission primary gear POLINI helical gearing toothing 18/67 for VESPA 50 PK, SPECIAL, XL 2T

Ideal to accompany and support an advanced configuration. Here is the clutch, POLINI primary transmission ratio with helical gears. High quality, its materials and its study are made in order to offer a resistance and reliability to any test. With helical teeth, the ratios will be longer and thanks to the materials and the gear system, the gear will be more progressive than a straight toothing and will reduce friction, noise, vibration ... while improving performance . Made of specially treated steel and hardened steel crown. This clutch / bell will support the largest engine configurations such as the high POLINI engine, to accompany POLINI clutch disks that will ensure better resistance of the clutch under pressure, thanks to the greater number of disks and springs that are more hard compared to the original ones.

Technical characteristics:

- Primary ratio Z = 18/67

Mounts on:

-VESPA 50 PK - SPECIAL VESPA 50 - VESPA 50 XL ... 50 and 75 2T