There is no US made equivalent to the Kawasaki Concours, nothing even close now that Harley has dropped the Buell.
http://en.wikipedia.org/wiki/Kawasaki_ConcoursThe Kawasaki Concours, known in Europe as the GTR1000, is a 997 cc, six speed, four cylinder, liquid-cooled sport touring motorcycle with shaft drive. The bike can reach speeds over 120 mph (190 km/h), offers nimble handling and – with its full fairing, tall screen, twin locking panniers, and 7.5 US gallons (28 l; 6.2 imp gal) fuel capacity – is suited to cross-country two-up touring.
Kawasaki introduced the Concours in 1986, based on their Ninja 900 and Ninja 1000 models. Key differences between the Ninja 1000 and the ZG1000 included 32 mm instead of 36 mm carburetors, less aggressively ramped cams, shaft drive, front and rear sub-frames, hard luggage, and full fairing. The Concours was introduced into the USA the year after the slower BMW K100LT at less than two-thirds the price of the BMW machine. Both bikes were tested by the magazine Motorcyclist, which came out in favor of the Kawasaki concluding that it was "the most practical, useful and competent motorcycle made" and "superior to the BMW in almost every aspect imaginable".<1>
From 1986 to 1993 the design was largely unchanged aside from modifications to the screen, handlebars and other very minor changes. In 1994 Kawasaki updated the instrument cluster, forks, controls, front fender, front brakes, and the front wheel. From 1994 to 2006, the design again experienced only minor changes: fork protectors and exhaust tips. As the Concours first generation endured with few revisions, experienced mechanics and used parts are readily available.