SIZING: 20X6-10 FRONT; 18X10-8 REAR. NEW 18X8-8 REAR QUADCROSS FOR SMALLER SPORT ATVS NOW AVAILABLE. NEW AND IMPROVED FOR 2008. THE NEW MX PRO FEATURES A REVISED SHOULDER PROFILE FOR GREATLY IMPROVED PREDICTABILITY AND SIDE BITE. WE RACE WHAT WE SELL. SOFT “WORKS”-LIKE RUBBER COMPOUND SETS A NEW STANDARD ON HARD-PACKED TRACKS. BASED ON THE R&D ASSISTANCE OF FACTORY YAMAHA AND KAWASAKI ATV MX TEAMS, THE NEW QUADCROSS MX PRO FRONT AND REAR COMBO WILL CUT SECONDS OFF ANY RIDER’S LAP TIMES.