Maicson Racing Exhaust link pipe without CAT - Vespa / Italjet Dragster 300Maicson Racing Exhaust link pipe without CAT This exhaust pipe will give your engine more Power & More Torque. Because of there is no CAT used, so the engine will have a better OUTLET exhaust flow. You will feel that the engine will have more torque and the Top Speed will increase. NOTE : for the best performance your ECU software have to be modified. Fits on: Vespa Italjet Dragster 300 (not on E5 Vespa 125cc )