I just installed 21" Mud Shark tires on my '06, and here is what I found during my first ride:

1. They are great in the mud, loose terrain, and rocky areas. These tires really bite into sand banks, and hills that the stock tires used to just spin out on I can now climb. The increased traction and the small amount of ground clearance I gained was great. I know 1/2" doesn't sound like a lot, but it is. The lugs on these babies are awesome for mud holes, too, so the name is quite appropriate.

2. These are not phenomenal trail tires. If you are riding smooth trail, they vibrate at lower speeds and are difficult to roost around corners. The increased bite cuts down on the corner slides, so if you are looking for a general trail tire, look elsewhere.

3. They are noisy. Not that most people care, but some will.

4. Because the are 21" and I didn't change my stock gearing, I lost a little bottom end. Not a problem for me, but the holeshots you can pull on your buddy's 400EX won't be happening anymore.

Overall, I am pleased with the tires because they do just what I was looking for; increased mud and sand traction. If you like to ride in the rough stuff and need a fairly aggressive tire that bites well into mud, sand, and rocks, this may be the way you want to go. If you are looking for an all-around trail tire, look elsewhere.


Jerry

Nice review!!! I never looked at Mud Sharks as a trail tire, i always seen them on ute's. Sounds like a good all around tire to me!

peewee, i had mudsharks on mine until i pumped it up a bit. those are awesome trail tires but, they grab very unpredictably when hill climbing with anything other than bone stock bikes! that is why i took them off and went to razor2's!! those dogs would break loose when i would jack the throttle hard and then all of the sudden, when you least expect it, they would find something to bite to and you are on your azz!!! since i switched to the razor2's i can climb anything i point mine at and don't have to worry about those big bars grabbing a rock or root and sending me cartwheeling back down!! for trails and soft or rocky terrain they are the best!!! for hill shooting, forget it!!! the bite is too unpredictable! i almost forgot, in sand they bite almost like a paddle too!!

got them on the justins machine and i'll be puttin them on the kfx next time around