27bhp PM Tuning Vespa Sei Giorni – Part 1 | CUSTOM 27bhp vespa gts, fast vespa gts, four stroke scooter tuning, pm tuning vespa gts, vesapa gts sei giorni, vespa gts 350, Vespa GTS custom, vespas gts tuning 0 Pound for pound four stroke tuning is less rewarding than two-stroke tuning. For less than a grand you can […]