S&S Throttle Hog 58mm Throttle Body For Harley Features: Get the most out of your big bore engine with S&S Cycle Throttle Hog throttle Bodies More air flow for improved performance S&S Cycle Stealth air cleaners kit, with the proper bore sizes, are available Works with all air cleaner kits designed for throttle by wire engines with stock breather system One-piece design for easy installation and stock appearance Compatible with stock sensors, fuel rail, and throttle cables Black powder coat finish matches stock Sealed, stainless steel throttle shaft with dual roller bearings for smooth operation and no air leaks Kit includes hardened steel flanges and seals No stock throttle body exchange required! Fits with 124 T Series engines Has 417 manifold size