High-torque exhaust in a subtle design. Provides considerably more top speed. Good For those who need a new exhaust and want more power, but do not want to ride with a small and particularly sporty sounding exhaust on their scooter. Very good torque curve and excellent performance on 50cc and 70cc Sports cylinder. This Tecnigas Silent Pro Exhaust System fits Vespa ET2, LX50 and Aprilia Mojito. These models have lower bodywork parts, so the exhaust bracket has been modified over to the standard version of Silent Pro Piaggio, which improves the fit. For all models of Piaggio Sfera.