Vespa Vespa 125 [1977-1982] - racing clutch with Z22 sprocket with helical teeth

POLINI racing clutch with helical Z22 pinion

The POLINI HT racing clutch is designed for the Vespa Vespa 125 from the 1977-1982 model year range. The helical Z22 pinion enables the selection of a suitable primary toothing within the POLINI-HT clutch system.

Function and construction

In the reverse mode of operation, the unit connected to the crankshaft is designed as an inner hub. The outer bell no longer has this function. This design principle forms the basis of the HT clutch for racing.

• Pressure plate on thrust bearing
• Aluminum bell
• Block cover with oil collecting groove
• Reinforced aluminum discs with 8 teeth
• Helical toothed Z22 pinion

Technical features

The aluminum discs, reinforced with 8 teeth, are designed to transmit power within the clutch. The spring force of the clutch can be adjusted. The system also offers the option of selecting the primary gearing to adjust the translation. By replacing the primary gear, the POLINI HT racing clutch can be customized with other available replacement parts.

Vehicle assignment

The product is assigned to the Vespa Vespa 125, built between 1977 and 1982. The precise and smooth shifting supports effortless gear changes in the intended area of ​​use.

Factual note

The Z22 pinion has helical teeth and therefore corresponds to the selected version of this racing clutch. Different primary gears are available within the system for gear ratio adjustment.