Clamp ring air filter

The ring has a patented closing system.
The system ensures an equal divided clamping force and has NO sliding parts on the inner ring.
It is thus impossible to squeeze the rubber flange, as it can happen with a standard clamping ring.
There will be 100% sure no gap for dirt to enter the carb, with this ring this is impossible.
The ring also has a spring to keep tension on the clamped air filter.
The clamping ring working loose is herewith also secured.