Vespa PX 177 - Sound - Sito Plus VS Polini - YouTube
Racing Exhaust SITO Plus steel black fits wide tyre TUNING ROAD - suitable for everyday use For race use only. Not admitted in the area of the German StVZO! | SIP-Scootershop
0510 - Silencer Site Plus Piaggio Vespa ET4 LX 2T 4T 125 150 | eBay