S&S Cycle has built an all new V-Twin engine called the "X-Wedge." This is not a re-engineered anything, they started from scratch and designed a brand new engine with an emissions legal fuel and exhaust system, which will conveniently address the custom bike building issues caused by the new EPA rules.
What's new about the X-Wedge? It's a 56.25 degree V-twin with a single piece forged crank, three cams (two exhaust and one intake), wedge head combustion chambers, 30% to 50% greater cooling fin area than traditional twins, a new oiling system and it will be available in displacements from 110 to 139 cubic inches. Many of the parts are automotive style giving S&S the ability to source parts from more suppliers. S&S also builds their own six speed transmission to go along with the X-Wedge. Power so far, without any real effort is 135 horsepower at the crank, in emissions legal form. An added bonus is the engine is built in Viola, Wisconsin, not sourced from China or anywhere else, that earns it some big points in my eyes, we need a lot more of that.
Cycle World has an in depth article in the January issue covering this new engine. One point they made in the "Oh, by the way" category was the bike used as a test bed. It was a mix of S&S frame and Buell inverted fork, custom fender, Muzzy exhaust, you know, all of the things you might put together if you were thinking of going into the custom motorcycle business instead of just building engines. Another U.S. V-twin motorcycle company with a little less chopper and a little more sport? Now, wouldn't that be interesting?
Related: New EPA Rules for Custom Bikes