The new S&S Throttle Hog Huge Boar EFI throttle bodies for bikes with throttle-by-wire 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.
“It’s no secret that to get the most power out of a big bore kit, cams, performance exhaust, and ported heads you need to upgrade the size of your EFI throttle body,” says S&S project engineer Kayle Pauling. “The problem is that it’s hard to find a big throttle body for throttle-by-wire bikes.” Kayle went on to explain that, 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 Throttle Hog solves that problem in a big way,” concludes Kayle.