Sports exhaust for the Vespa Grand Sport 150 models, which were already very fast ex works for their time. The original look of the original exhaust has been virtually retained, while the performance values correspond to those of a modern two-stroke resonance system. Only with such an exhaust can the full potential of a tuning cylinder be explored. However, it also offers a remarkable increase in performance on original engines.
Identical to VSP. Widebox, SIP Road XL, Bollag etc.