2012 YAMAHA YZ85, b FOR THE SERIOUS MINI RACER /B P YZ85 is ready to race right out of the crate and features a liquid-cooled, 84.7 cc 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.