Small Vespa exhaust test Vespa PX80 original
Vespa exhaust test As part of our development of the 125cc cylinder for the PX80, different exhaust systems were tested on a completely original PX80 in order to have references available for comparison. We tested the following exhaust systems: Original Piaggio (green curve) SITO Plus (red curve) SIP Road (blue curve) It is remarkable how brave the Sito Plus […]
