Vespa GTR 125 [1977-1978] - racing clutch with Z23 sprocket straight teeth

POLINI racing clutch with Z23 pinion for Vespa GTR 125

The POLINI racing clutch with a ring gear and straight-toothed Z23 pinion is designed for racing use. Their reverse operation connects the crankshaft not to the outer bell, but to the inner hub. As a result, the design is based on an independent functional principle for clutch use.

Function and design features

• Pressure plate on a thrust bearing
• Aluminum bell
• Cover of the block with oil collecting channel
• Adjustable clutch spring force
• Straight toothed Z23 pinion for selecting the primary toothing

The aluminum discs are enlarged by 8 teeth and support efficient power transmission. The clutch can be tailored to the respective application using the adjustable spring force. The straight gearing with 23 teeth is part of this version and enables the selection of a suitable primary gear ratio within the POLINI system.

Vehicle assignment

The clutch is the Vespa GTR 125, built between 1977 and 1978, assigned. Both the vehicle and the complete model year range must be taken into account when making the selection.

Factual note

The construction is geared towards racing use. Spare parts and alternative primary gears enable the gearing to be adjusted if appropriate selection is made. Gear shifting is supported precisely and smoothly by the clutch.