Vespa GTS stainless steel exhaust with E-mark Are you looking for a new exhaust for your Vespa GTS? In our online shop you can find genuine Piaggio exhaust by Spark at a special price. The exhaust, made of stainless steel and with catalytic converter, is provided with the E-mark for use on the public highway. ... Continue reading Vespa GTS exhaust by SPARK at special price!