S&S project engineer Kayle Pauling explains: If an engine’s displacement is increased and other performance upgrades are performed, the stock 50mm throttle body just can’t deliver as much air as the engine demands. This limits the usable rpm range and puts a lid on peak horsepower. The issue was that it’s hard to find a big throttle body for throttle-by-wire bikes. The S&S Throttle Hog Huge Boar EFI throttle bodies solve that problem in a big way”
Bigger is better. S&S Throttle Hogs for 2008 and later Harley-Davidson® baggers with electronic throttle control are available in 58mm, 66mm, and 70mm bore sizes. The 58mm size is recommended for engines up to 110″, which makes it ideal for engines with S&S 106″ big bore kits. The 58 also works well for stock 96″ and 103″ displacement engines. The 66mm Throttle Hog is the perfect fuel system for a big inch S&S engine or Hot Set Up Kit®. The 70mm unit is strictly for large displacement engines with S&S B2 special application cylinder heads. The intake ports on the 70mm Hog are shaped to match the special oval shaped ports on the B2 heads.
Want to go fast, very fast? Here’s how S&S program works. Have an S&S dealer send your functional Harley-Davidson throttle-by-wire EFI throttle body to S&S and within two to three working days from receipt of your stock part, S&S will send back a brand new Throttle Hog using the electronics from your stock unit. The stock unit will also be returned. Obviously, your stock air cleaner won’t fit on this big new throttle body so S&S offers a complete line of Stealth air cleaner kits and back plates for Throttle Hogs. A Stealth air cleaner allows you to be sneaky and run your stock outer air cleaner cover, or show off with one of the stylishly cool S&S covers. Here’s a little known fact: The Stealth air cleaner kits for a 58mm Throttle Hog will also fit on a Screamin’ Eagle® 58mm throttle body. For more info, contact S&S Cycle.