Vance & Hines Racing Development Center (RDC) Components are manufactured with state-of-the-art equipment, utilizing stringent quality control procedures to significantly improve all components for prolonged durability and reliability. Whether building a street performance engine or a drag motor, Vance & Hines valvetrain components are drop-in upgrades providing needed stability while reducing premature wear. All components are made to exacting tolerances ensuring maximized performance. FITMENT Suzuki Hayabusa / All Years 27.5MM Stainless 28.5MM Stainless FEATURES Precision CNC Machined from a Stainless One Piece Forging for Higher Strength & Durability High Grade Allowing the Valve to Withstand High Heat and Maintain Roundness Chrome Coated on All Stainless Valves Micro Polished Stem for Smother Finish and Less Friction Resulting in Improved Performance Multi Angle Back Cuts for Enhanced Flow Track Tested and Proven Design on the World’s Fastest Pro Street & Pro Mod Motorcycles Currently Used by DME Racing, and Many Other Top Tier Teams