If a praying mantis had wheels, it would be the Kawasaki Z900. Rakish and aggressive to the extreme, this 948cc DOHC inline-four “epitomizes” (Kawasaki’s word) high-performance naked bikes. And the company may have a point because the Z900 does deliver a lot for riders who want audacious style dosed with function. For instance, despite the bike’s maniacal appearance, the seating position is reasonably upright and comfortable. Built-in rider aids include a clutch-assist feature that reduces lever effort, a slipper clutch that helps keep the chassis stable when you’re downshifting quickly, and antilock brakes (optional at $400).