The KX 85 Flies. My son was on a 99 KX80 and I just bought him the 2003 KX85. You can race this bike right off the showroom floor. It costs approximatly $3000.00 new. The suspension may fit from the 2000 80, check one of these websites for the specifications on both bikes. All the suspension looks the same as my sons 99 KX 80.