Or not. I've used East Grade as a grade-A suspension test circuit while evaluating several current sportbikes, but now the road's met its match: Yamaha's 2005 YZF-R6.Yamaha took a big stride with its R6 in '03. The bike performed and sold well, and was dominant in Supersport racing, but by '04 it already seemed long in the tooth. So this year, Yamaha introduced a bike that's more than a tweak but less than a complete redesign. It almost seems the tuning forkers have placed function ahead of form, as the new R6 gets a new, fully adjustable inverted fork and radial front brakes, but not the underseat exhaust that's so du jour. Indeed, the bodywork's virtually identical to that of last year's bike.