More Air, More Power! S&S Throttle Hog Throttle bodies are available for 2002 thru 2017 Harley-Davidson Twin Cam. Choose from 58mm for stock or mildly built engines, or the whopping 66mm Throttle Hog for Big Inch engines. Throttle bodies are a one-piece design for easy installation and have a black powder coat finish for stock appearance. They feature a sealed, stainless steel throttle shaft with dual roller bearings for smooth operation and no air leaks. Kit also include hardened steel flanges and seals. Compatible with stock throttle cables, sensors and fuel rail, not compatible for models with Throttle-By-Wire, however they work with all air cleaner kits designed for Throttle-By-Wire Twin Cam engines with stock breather system.
Note: Some S&S cylinder heads have additional material on the manifold surface to allow the use of a stock length manifold (405) on a 124" engine. If you are not sure which manifold should be ordered, check fitment with the stock manifold first.