16/37 primary transmission Piaggio Zip, Vespa Sprint... Polini

Primary Drive Shaft and Intermediate Gear Polini Piaggio Zip, Diesis, Vespa Sprint...

New primary transmission adaptable for 50cc scooter Vespa Sprint, Piaggio Zip, Diesis...
The intermediate gear of this original type primary transmission must be mounted to the press. Indeed, this pinion is not double, it must be mounted in place of your original pinion on your intermediate shaft.

This gear kit includes

• 1 x primary shaft (clutch shaft)
• 1 x intermediate shaft sprocket
• 1 x circlips

Technical characteristics and dimensions

• Mark: Polini
• Manufacturer no .: 202.1392
• Number of teeth of the primary shaft: 16
• Total Shaft Length: 145mm
• Shaft outer diameter: 17mm
• Clutch Side Shaft Thread Diameter: 10 mm
• No threading: 1.25
• Number of teeth of the intermediate gear: 37
• Sprocket Inner Diameter: 18mm
• Sprocket outer diameter: 58mm