You had some real nice long wheelies. I am guessing you will be right about 50 mph on the nose with Sledgehammers with those gears. My new bearings came today for my Kraton so I am going to put those in later this morning. Time permitting I want to take my Xmaxx out this afternoon. Speaking of which I love my XRT, it handles so much sharper than the Xmaxx. It isn't as spongy.