Exhaust, Polini - Primavera Vespa Small Frame Exhaust.Made in Italy by PoliniSimple bolt on power for your Vespa small frame. Get more acceleration, mid range power increase, and more top speed. Tests have been done on this exhaust. and it has the highest horse power output to money ratio. THAT MEANS MORE BANG FOR YOUR BUCK! Tests have shown this pipe is capable of producing 13+hp! fits Vespa 50, 90, 100, 125 primavera, and 125 primavera ET3.Works great with all after-market cylinder kits, such and the malossi 133, polini 130, and DR130.Anytime you upgrade your exhaust, you should always re-check you carburetor and adjust your jetting.Looking for more performance upgrades? We also have a high performance kit that includes this pipe!Not legal for use in California on pollution controlled vehicles. Check local laws before installing.