With the Q-Tre, Tecnigas now offers a cost-effective scooter tuning exhaust system. This Tecnigas exhaust is suitable for 50cc engines. The silencer is sleek-looking and black anodized. A special highlight in this price range is the road legal status of the system from the E-certification. The throttle is found in the manifold. If removed, it means much more power, but it also voids the street legality.