S&S Throttle Hog 66mm Throttle Body For Harley Big Twin S&S Cycle has a long history of developing performance parts for riders looking to get more from their V-twin engines. The Throttle Hog 66mm Throttle Body is designed with airflow in mind, helping big-bore Harley builds take advantage of the increased breathing capacity needed for improved performance. 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 97, 98 & S&S T Series engines Has 410 manifold size