Well, I took my stock zr900 to the drags this weekend and did very well. I do not have it broke in very well yet I only got it warm a few times. I also still had a little premix left in my tank so that didn't help any either. But, I raced a Polaris 700 with head work, reeds, and airbox work and woopped his ###, which I should being a 900. I also raced a MXZ 800 with head work, cluthed, geared,and airbox mods and beat him even worse. Then was a ZR800 with twin pipes, cluthed, and geared, We were dead even. I was running very rich, and was not even broke in so I was very impressed. Next one is in a month So by then I will be more broke in and probably have pipes and reeds. Oh yeah, I also raced a Mach and beat him by about two sleds, he had work done but not sure what. The drags were 500 ft.