exhaust manifold restrictor plate Naraku adjustable for Rieju MRT 50 Euro4 NK103.28

Exhaust manifold restrictor plate. Following any performance upgrades, it may be necessary under certain circumstances to return the exhaust system back to factory mode. With this adjustable Naraku restrictor plate the power can be reduced or restored to original. Suitable for Rieju MRT 50 Euro 4 vehicles built from 2018 and up.