Kawasaki remains the sole supercharged motorcycle manufacturer, but Harley-Davidson enthusiasts love adding the chargers to their bikes. Supercharging your Harley-Davidson can yield immense power ...

this Harley-Davidson Fat Boy. When it came to TTS, it had a few Screamin' Eagle performance mods already nestled neatly in the engine cases. The folks at TTS added not only their supercharger, but ...

But TTS–being the supercharger specialist it is–has managed ... This is well over 80 horsepower at the crank–about 14 up from the Harley-Davidson Forty-Eight and 8 up from Yamaha’s own ...