yamahamotorusa came out with the YZ80 in 1974 and eventually switched it to the YZ85 in 2002. What years of the YZ80/YZ85 have you guys had a chance to spin laps on? redbullmotorsports redbull motosportinc rdrco.inc bbrmotorsports allballsracing_ #YZ85 #yamaha #2stroke