Vespa Sprint Veloce 150 [1977-1979] - racing clutch with Z23 sprocket straight teeth

POLINI racing clutch with Z23 sprocket for Vespa Sprint Veloce 150

The POLINI HT clutch is designed for racing use and combines reverse functionality with the ability to specifically adapt the clutch to the desired primary gear ratio. In this concept, the component connected to the crankshaft is the inner hub and not the outer bell.

Function and construction

• Pressure plate on thrust bearing for clutch actuation
• Aluminum bell
• Cover of the block with oil collecting channel
• Adjustable clutch spring force
• Z23 primary sprocket with straight teeth

The straight teeth of the Z23 pinion enable the selection of a suitable primary gear ratio within the POLINI-HT clutch system. By replacing the primary gear, the clutch can be adapted to different gear ratios. The clutch supports precise and smooth gear shifting.

Technical features

• Version: HT clutch for racing use
• Pinion: Z23, straight teeth
• Pressure plate: on thrust bearing
• Bell: aluminum
• Spring force: adjustable

Vehicle assignment

Suitable for the Vespa Sprint Veloce 150 built between 1977 and 1979.

The design is suitable for applications where adjustable clutch spring force and a targeted choice of primary toothing are required.