Ok, I know lots of you have XR100s and such, So I thought I would start an XR100 setup and performance thread. What are you doing to your XR to make it racey? I am currently exploring the option of running an xr80 in the stock xr100 class here in Alberta. and here is why. We cannot run XR80 front wheels on the 100. It is a run it as it was build class. So my thought is the XR80 should get through the turns better then the 100. Also the 80 has a closer ratio transmission then the 100. It is the same frame and fork, only a different swingarm. The HP difference is less then 1hp in stock trim. It is lighter (although my fat ass will negate any advantage there). With smaller wheels it should accelerate slightly better thus negating the lower hp. I should let you all know that we only race on kart tracks up here. There are not alot of places to really stretch a bike out on any of the tracks. So what sayth the beeb? How do you think an XR80 could stand up to an XR100? Also what have you done to make your 100 raceable?