for Vespa GTS/GTS Super/GTV/GT 60 125-300ccm i.e., 4T, LC stainless steel with Lambda seating TUNING ROAD – for everyday use Product description PM TUNING have been producing these well proven exhausts for Vespas for over 15 years. Paul Melici made his name on the scooter scene producing pipes for classic scooters. Now he has turned his expertise to the automatic scooters and maxis and was recently rewarded with a quarter mile world record! All PM systems are hand welded and are compatible with both standard and tuning cylinders. PM56: According to a ??Scootering?? test this pipe provides 33% more power. Exactly the 2PS you require to beat that mountain pass or carry a pillion. Delivery includes db eater. PM81: Noticeable increase in performance across the whole of the rev-range with a simple mounting. No adjustments to the injection unit are necessary. PM62 X-Tech: Its 360?? design solves the problem of an optimal length. During testing on a GT200 by PM they measured an extra 2PS.