Exhaust Restrictor Plate Naraku Aprilia / Beta / Derbi / Rieju

Exhaust Restrictor Plate Aprilia / Beta / Derbi / Rieju, adjustable restriction for the headpipe. If you want / need to restore the exhaust system to the (restricted) factory condition, simply use this exhaust restrictor. The original performance is restored which usually means that the power is reduced.The bendable plate can be turned by means of a screwdriver and thus releases more or less exhaust gas. This allows the power reduction to be adjusted to a greater or lesser extent. The plate comes with a setting that corresponds to the original condition of the vehicle ex factory.Only suitable for original manifolds with 52mm hole spacing. Suitable for Aprilia, Beta, Derbi and Rieju.