exhaust manifold unrestricted for Keeway, Generic, Sachs, Explorer

Many scooters such as the ATU Explorer Race GT50, as well as Keeway, Generic and Sachs models come with a heavily restricted exhaust system. We installed the tuned manifold in our test scooters (Race GT 50) and in original condition, with a restricted variator restrictor, achieved 63kmh. After removing the variator restrictor, we achieved a top speed of 72 kmh SLS connection is made redundant, which frees up more power. We recommend using a bolt to blank off the tube. No need to change the main jet. For optimal performance, you can also change the variator rollers for lighter ones. We recommend a 5.8g 15xz12mm set. This manifold is a racing product without road certification. Includes manifold and gasket.