This replaces the mounting ring of the polini air filter for vespa smallframe 19/19 carbs. The elliptical bell shape smooths and greatly increases the airflow. It will be required to rejet due to the much greater airflow. On our test bike we went from a 74 main jet to a 108. This design also has a serrated texture around the outside allowing the filter a much better grip.
Replacement bag hook for the Vespa GTS that includes a bottle opener. Still playing with the design and not sure how long it will last printed in nylon. It fits and works well though the cap digs into the nylon quite a bit. No markup at the moment, order at your own risk.