olympia 55mm kit for v50

Hi does anyone knows what upgear kit(cogs) i must use for the olympia 55mm kit?

and must i change the 16.16 shb for a 19.19shb? thanks!

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it dipends on the use you intend to do of your vespa. the most used upgear kits for a 102cc are the 24/72 and the 22/63 but in my opinion the latter is a bit long. if you are intersted in climbing mountains or having good performance also with passenger than you may use a 18/67 but it is rather short so you'll reach a lower top speed than with the 24/72. About the carb the 19 is muuuuch better, especially with a 24/72 or 22/63