Vespa Cosa 125 [1988-1997] - racing clutch with Z22 sprocket straight teeth

POLINI racing clutch with Z22 pinion for Vespa Cosa 125

The POLINI HT Clutch For Race combines reverse functionality with a straight-toothed primary transmission. In this design, the unit connected to the crankshaft sits as an inner hub rather than an outer clutch bell. The Z22 pinion has straight teeth and enables targeted selection of the gear ratio.

Function and features

• Pressure plate on thrust bearing for clutch actuation
• Aluminum bell
• Block cover with oil collecting groove
• Aluminum discs reinforced with 8 teeth for power transmission
• Adjustable clutch spring force

The clutch allows the primary gear ratio to be adjusted by selecting the appropriate primary gear. The pinion described here has 22 teeth and straight teeth. This allows the translation to be tailored specifically to the respective structure. The construction is designed for precise and smooth switching operations.

Technical data

• Brand: POLINI
• Version: Racing clutch with sprocket
• Pinion: Z22
• Gearing: straight
• Bell: aluminum
• Pressure plate: on thrust bearing

Vehicle assignment

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

The clutch is intended for applications in which spring force and primary transmission need to be coordinated. In addition to the vehicle model, the straight teeth of the Z22 pinion must be taken into account when making the selection.