Vespa PX 125 [1978-1997] - racing clutch with Z22 sprocket with helical teeth

POLINI racing clutch Z22 with helical teeth for Vespa PX 125

The POLINI HT racing clutch combines reverse functionality with the Z22 ring gear design with helical-toothed pinion. Unlike a traditional design, the part connected to the crankshaft is the inner hub and not the outer clutch bell. This makes the clutch a specially designed solution for power transmission in the Vespa engine.

Function and construction

• Pressure plate on thrust bearing for actuation of the clutch
• Aluminum bell as part of the clutch construction
• Lid with oil collection groove
• Aluminum discs reinforced with 8 teeth for power transmission
• Adjustable clutch spring force

Translation and switching behavior

The POLINI HT clutch allows the selection of primary toothing to adapt the translation to the respective application. This version has a Z22 pinion with helical teeth. The concept supports precise and smooth shifting for controlled gear changes. If necessary, the coupling can be modified using suitable spare parts from the POLINI range.

Vehicle assignment

Suitable for the Vespa PX 125, built between 1978 and 1997.

Factual information

The product name refers to the POLINI HT racing clutch with Z22 ring gear and helical-toothed pinion. The specified vehicle assignment and the desired primary translation are decisive for the selection.