So my buddy rides an 850 polaris and has been hounding me to race him. From what every one says, the 850 is the biggest baddest 4x4 atv out there... I cleaned him off the line...I mean really cleaned him like 3 atv lengths before he even started to gain on me. He didn't pass me until i was at about 70 km/h I've got a stage 3 VFJ clutch mod and im running 27x12 inch mud lites. I still have the stock clutch spring in my primary because the one john told me to get is back ordered. I am also getting my new 26" terra cross tires this week. would anyone be able to tell me if its gunna make a big difference when my new tires and spring is installed??