Hey guys...i have an xxx-nt sport and I just bought a os cv .12 for it and before it arrives i want to get the flywheel off of my dynamite mach .15, and I've looked all over and cant find any suggestions on how to take it off and the ones that i found havent worked...help is appreciated...thanks

I dont remember what size wrench it is, but you need to put it in the end of the shaft, and hold your flywheel w/ a plyers like channel locks or a large vise grips, and unscrew. after that everything comes right off, you may need to tap your fly wheel off but it will come right off.

is it a special kind of wrench?

never mind i got it...thanks a million

nope
just an allen wrench
the same size as the screw that holds on the wire that secures the tuned pipe,

I would change the collet , get a new one , RED