Polini Box-Auspuff PX200 - Gronsdorf Vespa Garage, der GVG-Rollershop
Freakmoped vespa tuning tips - how BIG difference between original exhaust and polini box? how much faster is the vespa with these 2 additional horses :D whats your guess? -1,2,3s 0-50kmh? -4,5,6s