When KTM's 790 Adventure debuted, it made big waves in the ADV community. But could the 790 be pushed farther to become the perfect adventure motorcycle? KTM gave it a go, and the result is the 790 Adventure R Rally. Spurgeon takes a look at what makes the Rally version different from the standard 790, then puts the bike through its paces for a proper review. Spoiler alert: it's good.