New VOCA bell mouth developed on testing bench, race track and computer based fluid dynamic simulation. The result is a bell mouth that optimizes the admission and increases the performance of the engine. Easy fitting! The CNC machined bell mouth is mounted on the carburettor with three screws. Perfect fit on KEHIN PWK and VOCA FT carburettors. Available in VOCA red or VOCA black. Recommended for competiton use of dragsters, scooters, pit- and gear-bikes.