The R&D Intake Manifold Ribbon Delete Kit was developed to increase airflow into and through the intake system by relieving restriction. The R&D Intake Manifold Sleeve replaces the OEM intake ribbon producing a 40 CFM increase in air flow. The R&D billet sleeve mounts between the intake manifold and the throttle body creating a superior Venturi effect. The R&D Intake Kit will add low end and mid range throttle response, and a full 100 plus rpms to top end performance to a stock SVHO. The R&D Intake sleeve is an absolute must have part to remove intake restrictions before contemplating power adding compressor booster wheels or turbo charger kits to the Yamaha SVHO engine. True horsepower gains on the Yamaha start right here with the R&D Intake Sleeve. More airflow will equal more power. Note: The Kit comes complete with install jig to cut out the oem ribbon which is molded into the plastic manifold. A 2.750" hole saw (required) is sold separately or available at your local hardware store.