Vespa PX E Arcobaleno 125 [1981-1997] - racing clutch with Z23 sprocket with helical teeth

POLINI racing clutch with Z23 pinion for Vespa PX E Arcobaleno 125

The POLINI HT clutch is designed for racing use on Vespas. Their reverse operation connects the crankshaft to the inner hub instead of the outer clutch bell. The Z23 pinion has helical teeth and enables the primary drive to be properly tuned.

Function and construction

• Pressure plate on thrust bearing for precise clutch actuation
• Aluminum bell as part of the clutch construction
• Aluminum discs with 8 teeth larger design to maximize transmission efficiency
• Adjustable spring force to adapt the clutch characteristics

The clutch supports higher transmitted power and precise, smooth gear shifting. The gear ratios can be adjusted by choosing the toothing of the primary wheel. The POLINI HT clutch can be modified by replacing the primary gear.

Technical features

• Version: Racing clutch for Vespa PX
• Gearing: Z23, helical gearing
• Clutch concept: reverse functionality with an inner hub on the crankshaft
• Spring force of the clutch is adjustable

Vehicle assignment

The POLINI racing clutch with Z23 pinion fits the Vespa PX E Arcobaleno 125, built between 1981 and 1997.