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The R&D Reed Stuffers for the SuperJet stand up have been relied on over the past decade to deliver stronger power. This stuffer is designed to drop into the OEM reed valve and create a blue printed match between the OEM manifold and reed valve. Stuffing up the reed eliminates air turbulence, creating maximum airflow, improved velocity to the intake ports, and allows the engine to pull more fuel through bottom and mid range rpm. Producing crisp throttle response and increased bottom and mid power.