The S650 twin throttle body setup is awesome… until you try to plumb a turbo or centrifugal supercharger and realize it’s a nightmare.
Our HD Throttle Body Adapter Set converts each OEM throttle body to a standard HD clamp interface so you can run custom piping or larger inlets without welding or modifying the throttle bodies.
They’re billet, O-ring sealed, and the kit includes the adapters, O-rings, and stainless hardware—clean, reliable, and reversible.