The Wakan 1640 starts with a single spine oil carrying frame, a 54 inch wheelbase, with inverted Ceriani forks mounted at 22 degrees. Power comes from a 100 cubic inch S&S V-Twin producing 115hp and 115 foot pounds of torque and those horses are moving a motorcycle that weighs only 390 pounds with oil, no fuel. The engine sports a single Keihin flatslide carb that gets ram air through a blower type scoop situated above the airbox cover. The fuel tank is below the seat, molded to double as a sort of rear mudguard with the filler mounted on the tailsection.
The engine has been dynamically balanced to reduce vibration plus the bar end weights help and the result is a much smoother bike than you might expect.
Braking chores go to a single 340mm front disc with a six piston caliper, which first road tester, Alan Cathcart, calls, "OK" but which might need to be tweaked a bit for serious stopping power. Cathcart also says the handling is similar to the Buell Firebolt XB12R but performance from the S&S V-Twin is definitely a step up.
Article and pic taken from The Knee Slider....