I'm going to be installing a set of frame sliders before taking my bike out on the track. Is it necessary to remove the exhaust header to support the engine? it seems like a really easy installation other than that. Can the engine be adequately supported without removing the header pipe?
I supported my engine with a jack from a car when installing my sliders, pretty easy. Though to be honest it's almost not even necessary. Leave the original engine bolt in place and push it out with the new one, tapping firmly on the end with a mallet. That way the engine is pretty much always supported. Very nice product overall.
be careful beating on the end of the stud you will screw up the threads and then wonder why the nut doesn't thread far enough or why the heli coil moved. There is a reason Cycle Cat asks you to support the engine and doesn't tell you to use the new stud to beat the old one out. They don't want you to screw up the end of the thread and then complain that the nuts won't go on. It is important that you follow the directions after all this stud holds the front of your engine up.