If you're uncertain about your bike's compatibility with the 131 Crate Engine, consult your local Harley-Davidson dealer for guidance. Just know that, according to Harley-Davidson, the 131 Crate ...

Harley-Davidson Big-Twin engines have always tended ... stops with its new Screamin' Eagle Twin-Cooled Milwaukee-Eight 131 ...

The 1909 Renault Gray Model 5-D was the first Harley-Davidson motorcycle to feature a V-twin engine. Harley-Davidson The V-twin did not truly begin its takeover of the two-wheeled world until around ...