for Vespa 150 GS VS2-5T/VDTS 57,0mm aluminium Grade AA – first-class repair Product description `Innoviazione nella tecnica classica?? and unbeatable style and design. The VESPA GS150/ GS3 was a milestone in PIAGGIOs engineering history and back when it was introduced, one of the best-selling VESPA models. Regrettably, cooling problems and the consequent heat seizures are much too common. This can now be remedied. Following the German VESPA veterans club getting in touch with Scootershop concerning this deficit we, in turn, got together with the people at Grand Sport and have been able to provide a welcome update/ upgrade for the Vespa 150 GS piston. The new piston was developed along the lines of the original item, with a very slightly off-centre gudgeon mounting and a suitably shaped piston crown on the transfer side of the cylinder. Y-shaped ribs reinforce the area between the gudgeon pin and beneath the crown of the piston. The material of the piston includes 18% silicium, so i