I don't know if a 400+ lb, 650cc bike should be considered a "light and fast adventurer," but here goes.

For 2017, Suzuki has updated the V-Strom 650. The company added an XT version aimed at the needs of the ADV rider, by adding spoked wheels and hand guards.

http://www.cycleworld.com/2017-suzuk...orcycle-review

The review concludes that the new V-Strom is more comfortable and road-oriented than the Kawasaki KLR650, a perennial ADV rider favorite.