Vespa Cosa 150 [1988-1997] - racing clutch with Z23 sprocket straight teeth

POLINI racing clutch with Z23 pinion for Vespa Cosa 150

The POLINI racing clutch with straight teeth and Z23 pinion is designed for racing use. Their reverse operation connects not the outer bell, but the inner hub to the crankshaft. As a result, the clutch forms a technically independent solution for power transmission.

Function and features

• Pressure plate on thrust bearing
• Aluminum bell
• Cover of the block with oil collecting channel
• Aluminum discs, enlarged by 8 teeth
• Straight toothed primary pinion with Z=23

The enlarged aluminum discs are designed for efficient power transmission and enable higher transmitted power. The spring force of the clutch can be adjusted. In addition, the toothing of the primary wheel can be selected to fine-tune the gear ratios.

Technical choices

The clutch can be modified by replacing the primary gear. A straight-toothed pinion with Z=23 is provided for the version described here. The gearshift works precisely and smoothly, thereby supporting effortless gear changes.

Vehicle assignment

Suitable for the Vespa Cosa 150, built between 1988 and 1997.

Factual note

The design combines an adjustable spring force with the possibility of adapting the primary toothing to the desired translation. The product belongs to the motor and clutch area.