It might seem like a daunting task, but Harley-Davidson's line of crate engines makes a swap ... to get the most performance out of their motorcycle. While Harley's website shows a wide selection ...

2,212cc Harley-Davidson Screamin' Eagle 135 Stage IV Crate motorcycle engines may not be as common as those for cars, but don't tell that to Harley-Davidson. The iconic American brand makes two ...