Just ordered titan 589's for magnum. Think I messed up though. I ordered 25-10-12 for the front. Will they clear the strut on the front with stock rims?

It's a tight fit, but they will do fine.

i was going to put 25x10x12 but after checking the clearance i stayed with 8 in looked like if you got in sticky mud it would gum up too fast.

They won't gum up. I run 589s on both of my bikes. The 25x10x12 589s on my 325 only leave about a 1/8 of an inch btween tire and the strut. I have taken that bike through soupy mud up to the racks and through sticky stuff that won't wash off. Trust me, you will not have a problem with the tires gumming up.