Vespa Cosa 125 [1988-1997] - racing clutch with Z23 sprocket with helical teeth

POLINI racing clutch with Z23 pinion for Vespa Cosa 125

The POLINI HT clutch is designed for racing use and combines reverse functionality with adjustable gear ratio options. In this concept, the component connected to the crankshaft is the inner hub and not the outer bell. The Z23 pinion has helical teeth and corresponds to the original primary pinion.

Function and structure

• Pressure plate on axial bearing for structurally mounted actuation.
• Aluminum bell as part of the clutch.
• Cover of the block with oil collecting channel.
• Adjustable spring force to adapt the clutch characteristics.
• Precise and smooth gear shifting for effortless gear changes.

Technical features

The aluminum discs are enlarged by 8 teeth and are used to transmit the power. The teeth of the primary wheel can be selected to match the desired gear ratio. By replacing the primary gear, the POLINI HT Clutch For Race can be customized with other available spare parts.

Vehicle assignment

Suitable for the Vespa Cosa 125, built between 1988 and 1997.

Factual note

The Z23 pinion has helical teeth. The clutch is designed for use on Vespa and offers adjustable spring force and the ability to adjust the primary toothing.