2010 Yamaha YZ85, I rock the 85 class - THE MINI RACER OF CHOICE Born from the award winning YZ competition bikes. YZ85 features a liquid-cooled, 84.7 cubic centimeter crankcase reed-valve-inducted six-speed that is compact and light. You also get an ultra-rigid, single backbone, semi-double-cradle frame, fully adjustable suspension and more to suit a wide range of rider from novice to mini expert.